./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:50,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:50,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:50,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:50,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:50,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:50,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:50,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:50,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:50,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:50,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:50,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:50,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:50,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:50,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:50,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:50,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:50,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:50,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:50,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:50,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:50,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:50,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:50,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:50,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:50,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:50,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:50,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:50,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:50,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:50,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:50,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:50,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:50,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:50,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:50,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:50,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:50,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:50,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:50,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:50,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:50,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-19 14:35:50,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:50,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:50,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:50,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:50,688 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:50,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:50,689 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:50,689 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:35:50,689 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:50,689 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:50,691 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:35:50,691 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:35:50,691 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:50,691 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:35:50,692 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:35:50,692 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:35:50,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:35:50,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:35:50,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:50,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:35:50,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:35:50,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:50,694 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:35:50,694 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:35:50,694 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:35:50,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:50,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:50,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:50,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:50,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:50,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:50,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:50,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:50,698 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:35:50,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:35:50,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:50,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:50,699 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-19 14:35:50,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:51,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:51,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:51,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:51,024 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:51,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-19 14:35:51,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/9fee65cfd/c69521c60c6f43478eb21f31329c8e37/FLAG788ce2d38 [2021-11-19 14:35:51,779 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:51,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-19 14:35:51,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/9fee65cfd/c69521c60c6f43478eb21f31329c8e37/FLAG788ce2d38 [2021-11-19 14:35:51,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/9fee65cfd/c69521c60c6f43478eb21f31329c8e37 [2021-11-19 14:35:51,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:51,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:51,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:51,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:51,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:51,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:51" (1/1) ... [2021-11-19 14:35:51,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3262832d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:51, skipping insertion in model container [2021-11-19 14:35:51,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:51" (1/1) ... [2021-11-19 14:35:52,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:52,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:52,935 WARN L230 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_ee465989-d2cf-4869-8213-cfff52be7f02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-19 14:35:53,024 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:53,044 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:35:53,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4822e368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:53, skipping insertion in model container [2021-11-19 14:35:53,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:53,046 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:35:53,049 INFO L158 Benchmark]: Toolchain (without parser) took 1062.46ms. Allocated memory is still 115.3MB. Free memory was 75.4MB in the beginning and 78.3MB in the end (delta: -2.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:35:53,050 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory was 89.9MB in the beginning and 89.9MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:35:53,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1058.69ms. Allocated memory is still 115.3MB. Free memory was 75.1MB in the beginning and 78.3MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:35:53,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory was 89.9MB in the beginning and 89.9MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1058.69ms. Allocated memory is still 115.3MB. Free memory was 75.1MB in the beginning and 78.3MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:55,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:55,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:55,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:55,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:55,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:55,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:55,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:55,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:55,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:55,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:55,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:55,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:55,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:55,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:55,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:55,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:55,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:55,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:55,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:55,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:55,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:55,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:55,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:55,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:55,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:55,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:55,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:55,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:55,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:55,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:55,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:55,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:55,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:55,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:55,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:55,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:55,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:55,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:55,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:55,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:55,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-19 14:35:55,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:55,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:55,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:55,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:55,482 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:55,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:55,482 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:55,482 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:55,483 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:55,483 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:55,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:35:55,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:35:55,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:55,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:35:55,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:35:55,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:55,486 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:35:55,487 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:35:55,487 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:35:55,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:55,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:55,488 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:35:55,488 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:35:55,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:55,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:55,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:35:55,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:55,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:55,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:55,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:55,490 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:35:55,490 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:55,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:55,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:55,491 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_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-19 14:35:55,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:55,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:55,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:55,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:55,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:55,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-19 14:35:56,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/31e79c6fe/7971905ae8df46beaa00dfd44a648575/FLAG7a004e812 [2021-11-19 14:35:56,688 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:56,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-19 14:35:56,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/31e79c6fe/7971905ae8df46beaa00dfd44a648575/FLAG7a004e812 [2021-11-19 14:35:56,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/data/31e79c6fe/7971905ae8df46beaa00dfd44a648575 [2021-11-19 14:35:56,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:56,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:56,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:56,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:56,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:56,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:56" (1/1) ... [2021-11-19 14:35:56,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f840e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:56, skipping insertion in model container [2021-11-19 14:35:56,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:56" (1/1) ... [2021-11-19 14:35:56,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:57,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:57,997 WARN L230 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_ee465989-d2cf-4869-8213-cfff52be7f02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-19 14:35:58,097 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:58,117 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:35:58,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:58,210 WARN L230 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_ee465989-d2cf-4869-8213-cfff52be7f02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-19 14:35:58,291 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:58,297 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:35:58,335 WARN L230 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_ee465989-d2cf-4869-8213-cfff52be7f02/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-19 14:35:58,360 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:58,487 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:35:58,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58 WrapperNode [2021-11-19 14:35:58,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:58,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:58,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:35:58,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:35:58,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,602 INFO L137 Inliner]: procedures = 354, calls = 114, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 384 [2021-11-19 14:35:58,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:58,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:35:58,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:35:58,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:35:58,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:35:58,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:35:58,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:35:58,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:35:58,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (1/1) ... [2021-11-19 14:35:58,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:58,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:35:58,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:35:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:35:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:35:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:35:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:35:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:35:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:35:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:35:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:35:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:35:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:35:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 14:35:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:35:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:35:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:35:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:35:59,193 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:35:59,203 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:36:00,501 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:36:00,509 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:36:00,510 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-19 14:36:00,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:36:00 BoogieIcfgContainer [2021-11-19 14:36:00,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:36:00,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:36:00,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:36:00,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:36:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:35:56" (1/3) ... [2021-11-19 14:36:00,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4e65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:36:00, skipping insertion in model container [2021-11-19 14:36:00,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58" (2/3) ... [2021-11-19 14:36:00,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4e65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:36:00, skipping insertion in model container [2021-11-19 14:36:00,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:36:00" (3/3) ... [2021-11-19 14:36:00,526 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-11-19 14:36:00,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:36:00,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2021-11-19 14:36:00,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:36:00,597 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:36:00,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2021-11-19 14:36:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:36:00,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:00,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:36:00,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2021-11-19 14:36:00,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:00,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457519586] [2021-11-19 14:36:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:00,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:00,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:00,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:36:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:00,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:36:00,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:00,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:36:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:00,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:00,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:00,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457519586] [2021-11-19 14:36:00,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457519586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:00,969 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:00,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:36:00,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812888733] [2021-11-19 14:36:00,972 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:00,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:36:00,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:36:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:36:01,016 INFO L87 Difference]: Start difference. First operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:01,715 INFO L93 Difference]: Finished difference Result 253 states and 287 transitions. [2021-11-19 14:36:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:36:01,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 14:36:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:01,729 INFO L225 Difference]: With dead ends: 253 [2021-11-19 14:36:01,729 INFO L226 Difference]: Without dead ends: 251 [2021-11-19 14:36:01,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:36:01,734 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:01,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 207 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:36:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-19 14:36:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2021-11-19 14:36:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 142 states have (on average 1.8591549295774648) internal successors, (264), 231 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2021-11-19 14:36:01,791 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 3 [2021-11-19 14:36:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:01,792 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2021-11-19 14:36:01,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2021-11-19 14:36:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 14:36:01,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:01,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 14:36:01,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:02,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:02,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2021-11-19 14:36:02,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:02,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140394094] [2021-11-19 14:36:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:02,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:02,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:02,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:02,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:36:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:02,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:02,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:02,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:36:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:02,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:02,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:02,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140394094] [2021-11-19 14:36:02,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140394094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:02,404 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:02,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:36:02,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084952630] [2021-11-19 14:36:02,405 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:02,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:36:02,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:36:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:36:02,407 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:04,086 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2021-11-19 14:36:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:36:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 14:36:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:04,091 INFO L225 Difference]: With dead ends: 234 [2021-11-19 14:36:04,091 INFO L226 Difference]: Without dead ends: 234 [2021-11-19 14:36:04,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:36:04,093 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:04,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 600 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:36:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-19 14:36:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-19 14:36:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 142 states have (on average 1.852112676056338) internal successors, (263), 230 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 267 transitions. [2021-11-19 14:36:04,126 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 267 transitions. Word has length 3 [2021-11-19 14:36:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:04,126 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 267 transitions. [2021-11-19 14:36:04,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 267 transitions. [2021-11-19 14:36:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:36:04,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:04,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:36:04,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:36:04,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:04,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2021-11-19 14:36:04,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:04,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466812969] [2021-11-19 14:36:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:04,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:04,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:04,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:04,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:36:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:04,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:36:04,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:04,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:36:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:04,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:05,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:05,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466812969] [2021-11-19 14:36:05,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466812969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:05,193 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:05,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:36:05,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747359442] [2021-11-19 14:36:05,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:05,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:05,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:36:05,195 INFO L87 Difference]: Start difference. First operand 234 states and 267 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-11-19 14:36:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:08,454 INFO L93 Difference]: Finished difference Result 247 states and 282 transitions. [2021-11-19 14:36:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:36:08,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 6 [2021-11-19 14:36:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:08,458 INFO L225 Difference]: With dead ends: 247 [2021-11-19 14:36:08,458 INFO L226 Difference]: Without dead ends: 247 [2021-11-19 14:36:08,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:36:08,460 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 54 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:08,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 603 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:36:08,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-19 14:36:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2021-11-19 14:36:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 148 states have (on average 1.8243243243243243) internal successors, (270), 236 states have internal predecessors, (270), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 274 transitions. [2021-11-19 14:36:08,477 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 274 transitions. Word has length 6 [2021-11-19 14:36:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:08,477 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 274 transitions. [2021-11-19 14:36:08,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-11-19 14:36:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 274 transitions. [2021-11-19 14:36:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:36:08,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:08,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:08,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:08,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:08,697 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:08,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash -75834803, now seen corresponding path program 1 times [2021-11-19 14:36:08,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:08,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892686367] [2021-11-19 14:36:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:08,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:08,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:08,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:36:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:08,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:08,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:08,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:08,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:08,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892686367] [2021-11-19 14:36:08,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892686367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:08,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1449310909] [2021-11-19 14:36:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:08,942 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:08,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:36:08,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:36:08,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 14:36:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:09,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:09,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:09,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:09,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1449310909] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:09,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518661920] [2021-11-19 14:36:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:09,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:36:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:36:09,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:36:09,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 14:36:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:09,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:09,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:09,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:09,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518661920] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:09,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:36:09,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-19 14:36:09,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599852928] [2021-11-19 14:36:09,557 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:36:09,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:09,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:09,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:09,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:36:09,558 INFO L87 Difference]: Start difference. First operand 240 states and 274 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:09,683 INFO L93 Difference]: Finished difference Result 248 states and 281 transitions. [2021-11-19 14:36:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:09,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 14:36:09,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:09,687 INFO L225 Difference]: With dead ends: 248 [2021-11-19 14:36:09,687 INFO L226 Difference]: Without dead ends: 248 [2021-11-19 14:36:09,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:36:09,689 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 15 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:09,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1044 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:36:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-19 14:36:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2021-11-19 14:36:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 155 states have (on average 1.7870967741935484) internal successors, (277), 243 states have internal predecessors, (277), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 281 transitions. [2021-11-19 14:36:09,700 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 281 transitions. Word has length 11 [2021-11-19 14:36:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:09,701 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 281 transitions. [2021-11-19 14:36:09,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 281 transitions. [2021-11-19 14:36:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:36:09,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:09,702 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-19 14:36:09,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:09,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 14:36:10,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:10,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:10,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:10,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:10,316 INFO L85 PathProgramCache]: Analyzing trace with hash 6917423, now seen corresponding path program 1 times [2021-11-19 14:36:10,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:10,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206026446] [2021-11-19 14:36:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:10,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:10,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:10,319 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:10,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:36:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:10,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:36:10,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:10,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:36:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:10,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:13,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:13,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206026446] [2021-11-19 14:36:13,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206026446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:13,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418545784] [2021-11-19 14:36:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:13,212 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:13,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:36:13,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:36:13,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 14:36:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:13,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:36:13,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:13,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:36:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:13,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:14,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [418545784] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:14,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376231411] [2021-11-19 14:36:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:14,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:36:14,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:36:14,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:36:14,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 14:36:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:14,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:36:14,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:14,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:36:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:14,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:15,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376231411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:15,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:36:15,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-19 14:36:15,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558015327] [2021-11-19 14:36:15,672 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:36:15,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:36:15,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:36:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:36:15,674 INFO L87 Difference]: Start difference. First operand 247 states and 281 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:22,504 INFO L93 Difference]: Finished difference Result 250 states and 283 transitions. [2021-11-19 14:36:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:36:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 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 14 [2021-11-19 14:36:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:22,508 INFO L225 Difference]: With dead ends: 250 [2021-11-19 14:36:22,508 INFO L226 Difference]: Without dead ends: 250 [2021-11-19 14:36:22,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:36:22,509 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 41 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:22,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1292 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 14:36:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-19 14:36:22,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-11-19 14:36:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 159 states have (on average 1.7547169811320755) internal successors, (279), 246 states have internal predecessors, (279), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 283 transitions. [2021-11-19 14:36:22,520 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 283 transitions. Word has length 14 [2021-11-19 14:36:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:22,520 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 283 transitions. [2021-11-19 14:36:22,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 283 transitions. [2021-11-19 14:36:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:36:22,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:22,522 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:22,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-19 14:36:22,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:22,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:23,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:23,129 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2102751937, now seen corresponding path program 2 times [2021-11-19 14:36:23,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:23,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167663664] [2021-11-19 14:36:23,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:36:23,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:23,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:23,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:36:23,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:36:23,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:23,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:36:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:23,290 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:36:23,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 22 [2021-11-19 14:36:23,417 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-19 14:36:23,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2021-11-19 14:36:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:36:23,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:36:24,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:24,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167663664] [2021-11-19 14:36:24,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167663664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:24,056 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:24,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-19 14:36:24,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322812673] [2021-11-19 14:36:24,056 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:24,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:36:24,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:24,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:36:24,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:36:24,058 INFO L87 Difference]: Start difference. First operand 250 states and 283 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:24,068 INFO L93 Difference]: Finished difference Result 249 states and 282 transitions. [2021-11-19 14:36:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:36:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 14:36:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:24,070 INFO L225 Difference]: With dead ends: 249 [2021-11-19 14:36:24,070 INFO L226 Difference]: Without dead ends: 249 [2021-11-19 14:36:24,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:36:24,072 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:24,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 600 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 88 Unchecked, 0.0s Time] [2021-11-19 14:36:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-19 14:36:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-19 14:36:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 159 states have (on average 1.748427672955975) internal successors, (278), 245 states have internal predecessors, (278), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2021-11-19 14:36:24,081 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 27 [2021-11-19 14:36:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:24,081 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2021-11-19 14:36:24,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2021-11-19 14:36:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:36:24,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:24,083 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:24,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:24,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:24,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2102751938, now seen corresponding path program 1 times [2021-11-19 14:36:24,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:24,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904337204] [2021-11-19 14:36:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:24,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:24,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:24,298 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:24,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:36:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:24,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:36:24,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:24,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:24,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:24,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904337204] [2021-11-19 14:36:24,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904337204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:24,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2139951508] [2021-11-19 14:36:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:24,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:24,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:36:24,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:36:24,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 14:36:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:25,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:36:25,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:25,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:25,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2139951508] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:25,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118659827] [2021-11-19 14:36:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:25,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:36:25,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:36:25,419 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:36:25,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 14:36:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:25,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:36:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:25,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:26,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118659827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:26,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:36:26,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-19 14:36:26,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477999064] [2021-11-19 14:36:26,078 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:36:26,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:36:26,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:26,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:36:26,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:36:26,080 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:26,783 INFO L93 Difference]: Finished difference Result 277 states and 311 transitions. [2021-11-19 14:36:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:36:26,785 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 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 27 [2021-11-19 14:36:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:26,787 INFO L225 Difference]: With dead ends: 277 [2021-11-19 14:36:26,787 INFO L226 Difference]: Without dead ends: 277 [2021-11-19 14:36:26,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:36:26,789 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 1308 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:26,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 2354 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:36:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-19 14:36:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-11-19 14:36:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 187 states have (on average 1.641711229946524) internal successors, (307), 273 states have internal predecessors, (307), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 311 transitions. [2021-11-19 14:36:26,799 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 311 transitions. Word has length 27 [2021-11-19 14:36:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:26,799 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 311 transitions. [2021-11-19 14:36:26,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 311 transitions. [2021-11-19 14:36:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 14:36:26,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:26,801 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:26,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:27,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:27,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:27,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:27,417 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash 233252627, now seen corresponding path program 2 times [2021-11-19 14:36:27,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:27,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528462777] [2021-11-19 14:36:27,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:36:27,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:27,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:27,419 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:27,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:36:27,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:36:27,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:27,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:36:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:27,577 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:36:27,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-19 14:36:27,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-19 14:36:27,711 INFO L354 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2021-11-19 14:36:27,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 34 [2021-11-19 14:36:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:35,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:37,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:37,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528462777] [2021-11-19 14:36:37,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528462777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:37,110 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:37,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-19 14:36:37,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679477969] [2021-11-19 14:36:37,111 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:37,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:37,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:37,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:36:37,112 INFO L87 Difference]: Start difference. First operand 277 states and 311 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:37,121 INFO L93 Difference]: Finished difference Result 276 states and 310 transitions. [2021-11-19 14:36:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:36:37,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-19 14:36:37,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:37,124 INFO L225 Difference]: With dead ends: 276 [2021-11-19 14:36:37,124 INFO L226 Difference]: Without dead ends: 276 [2021-11-19 14:36:37,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:36:37,125 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 6 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:37,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 982 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 153 Unchecked, 0.0s Time] [2021-11-19 14:36:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-19 14:36:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-19 14:36:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 187 states have (on average 1.6363636363636365) internal successors, (306), 272 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 310 transitions. [2021-11-19 14:36:37,135 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 310 transitions. Word has length 47 [2021-11-19 14:36:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:37,135 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 310 transitions. [2021-11-19 14:36:37,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 310 transitions. [2021-11-19 14:36:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:36:37,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:37,138 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:37,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 14:36:37,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:37,368 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773764, now seen corresponding path program 1 times [2021-11-19 14:36:37,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:37,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359089654] [2021-11-19 14:36:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:37,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:37,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:37,372 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:37,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:36:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:37,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:36:37,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:37,786 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:36:37,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-19 14:36:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:37,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:37,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:37,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359089654] [2021-11-19 14:36:37,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359089654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:37,913 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:37,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:36:37,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996954489] [2021-11-19 14:36:37,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:37,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:36:37,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:36:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:36:37,915 INFO L87 Difference]: Start difference. First operand 276 states and 310 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:36:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:38,457 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-11-19 14:36:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:36:38,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-11-19 14:36:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:38,460 INFO L225 Difference]: With dead ends: 287 [2021-11-19 14:36:38,461 INFO L226 Difference]: Without dead ends: 287 [2021-11-19 14:36:38,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:36:38,462 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 222 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:38,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 211 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-19 14:36:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 271. [2021-11-19 14:36:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 187 states have (on average 1.6096256684491979) internal successors, (301), 267 states have internal predecessors, (301), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 305 transitions. [2021-11-19 14:36:38,472 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 305 transitions. Word has length 55 [2021-11-19 14:36:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:38,473 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 305 transitions. [2021-11-19 14:36:38,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:36:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 305 transitions. [2021-11-19 14:36:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:36:38,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:38,475 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:38,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:38,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:38,693 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773765, now seen corresponding path program 1 times [2021-11-19 14:36:38,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:38,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209358531] [2021-11-19 14:36:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:38,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:38,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:38,696 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:38,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:36:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:38,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:36:38,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:39,128 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-19 14:36:39,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 19 treesize of output 21 [2021-11-19 14:36:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:39,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:39,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:39,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209358531] [2021-11-19 14:36:39,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209358531] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:39,723 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:39,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:36:39,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789652237] [2021-11-19 14:36:39,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:39,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:39,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:39,725 INFO L87 Difference]: Start difference. First operand 271 states and 305 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:36:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:42,969 INFO L93 Difference]: Finished difference Result 451 states and 516 transitions. [2021-11-19 14:36:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2021-11-19 14:36:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:42,973 INFO L225 Difference]: With dead ends: 451 [2021-11-19 14:36:42,973 INFO L226 Difference]: Without dead ends: 451 [2021-11-19 14:36:42,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:36:42,974 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 450 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:42,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 966 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:36:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-19 14:36:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 375. [2021-11-19 14:36:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 291 states have (on average 1.711340206185567) internal successors, (498), 370 states have internal predecessors, (498), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 14:36:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 504 transitions. [2021-11-19 14:36:42,987 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 504 transitions. Word has length 55 [2021-11-19 14:36:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:42,988 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 504 transitions. [2021-11-19 14:36:42,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:36:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 504 transitions. [2021-11-19 14:36:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:36:42,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:42,989 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:43,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:43,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:43,200 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2067963466, now seen corresponding path program 1 times [2021-11-19 14:36:43,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:43,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300498956] [2021-11-19 14:36:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:43,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:43,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:43,203 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:43,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:36:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:43,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:36:43,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:43,739 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-19 14:36:43,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 36 treesize of output 37 [2021-11-19 14:36:43,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 36 [2021-11-19 14:36:44,286 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-19 14:36:44,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 62 [2021-11-19 14:36:44,306 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:36:44,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2021-11-19 14:36:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:44,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:45,954 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 14:36:45,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-19 14:36:50,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 58 treesize of output 56 [2021-11-19 14:36:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:50,899 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:50,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300498956] [2021-11-19 14:36:50,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300498956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:50,899 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:50,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-19 14:36:50,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678498975] [2021-11-19 14:36:50,900 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:50,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:36:50,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:36:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=163, Unknown=2, NotChecked=0, Total=210 [2021-11-19 14:36:50,901 INFO L87 Difference]: Start difference. First operand 375 states and 504 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:36:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:54,011 INFO L93 Difference]: Finished difference Result 374 states and 503 transitions. [2021-11-19 14:36:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:36:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2021-11-19 14:36:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:54,015 INFO L225 Difference]: With dead ends: 374 [2021-11-19 14:36:54,015 INFO L226 Difference]: Without dead ends: 374 [2021-11-19 14:36:54,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=57, Invalid=213, Unknown=2, NotChecked=0, Total=272 [2021-11-19 14:36:54,016 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 23 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:54,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1470 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 263 Unchecked, 2.9s Time] [2021-11-19 14:36:54,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-19 14:36:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-19 14:36:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 292 states have (on average 1.702054794520548) internal successors, (497), 369 states have internal predecessors, (497), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 14:36:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 503 transitions. [2021-11-19 14:36:54,029 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 503 transitions. Word has length 58 [2021-11-19 14:36:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:54,029 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 503 transitions. [2021-11-19 14:36:54,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:36:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 503 transitions. [2021-11-19 14:36:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 14:36:54,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:54,031 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:54,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:54,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:54,244 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash -317642580, now seen corresponding path program 1 times [2021-11-19 14:36:54,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:54,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567227093] [2021-11-19 14:36:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:54,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:54,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:54,246 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:54,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:36:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:54,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:36:54,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:54,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:54,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:54,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567227093] [2021-11-19 14:36:54,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567227093] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:54,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:54,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 14:36:54,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832840871] [2021-11-19 14:36:54,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:54,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:54,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:54,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:54,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:54,833 INFO L87 Difference]: Start difference. First operand 374 states and 503 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:36:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:55,263 INFO L93 Difference]: Finished difference Result 290 states and 325 transitions. [2021-11-19 14:36:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:36:55,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2021-11-19 14:36:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:55,266 INFO L225 Difference]: With dead ends: 290 [2021-11-19 14:36:55,266 INFO L226 Difference]: Without dead ends: 290 [2021-11-19 14:36:55,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:55,267 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 538 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:55,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1157 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:36:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-19 14:36:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 270. [2021-11-19 14:36:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 189 states have (on average 1.5873015873015872) internal successors, (300), 266 states have internal predecessors, (300), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 304 transitions. [2021-11-19 14:36:55,277 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 304 transitions. Word has length 59 [2021-11-19 14:36:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:55,277 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 304 transitions. [2021-11-19 14:36:55,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:36:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 304 transitions. [2021-11-19 14:36:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:36:55,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:55,279 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:55,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:55,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:55,497 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:55,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:55,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1256967413, now seen corresponding path program 1 times [2021-11-19 14:36:55,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:55,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104653179] [2021-11-19 14:36:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:55,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:55,499 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:55,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:36:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:55,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:36:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:55,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:56,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 10 [2021-11-19 14:36:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:56,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:56,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104653179] [2021-11-19 14:36:56,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104653179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:56,868 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:56,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:36:56,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662618397] [2021-11-19 14:36:56,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:56,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:36:56,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:36:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:36:56,870 INFO L87 Difference]: Start difference. First operand 270 states and 304 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:36:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:58,416 INFO L93 Difference]: Finished difference Result 470 states and 536 transitions. [2021-11-19 14:36:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:36:58,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-11-19 14:36:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:58,420 INFO L225 Difference]: With dead ends: 470 [2021-11-19 14:36:58,420 INFO L226 Difference]: Without dead ends: 470 [2021-11-19 14:36:58,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:36:58,420 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 732 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:58,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 925 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:36:58,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-19 14:36:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 268. [2021-11-19 14:36:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 189 states have (on average 1.5767195767195767) internal successors, (298), 264 states have internal predecessors, (298), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:36:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 302 transitions. [2021-11-19 14:36:58,431 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 302 transitions. Word has length 60 [2021-11-19 14:36:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:58,431 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 302 transitions. [2021-11-19 14:36:58,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:36:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 302 transitions. [2021-11-19 14:36:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:36:58,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:58,433 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:58,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:58,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:58,644 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:36:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:58,645 INFO L85 PathProgramCache]: Analyzing trace with hash -311284142, now seen corresponding path program 1 times [2021-11-19 14:36:58,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:58,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030506760] [2021-11-19 14:36:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:58,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:58,647 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:58,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:36:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:58,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:58,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:59,095 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:36:59,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-19 14:36:59,181 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:36:59,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 [2021-11-19 14:36:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:59,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:36:59,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:59,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030506760] [2021-11-19 14:36:59,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030506760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:59,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:59,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:36:59,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330052881] [2021-11-19 14:36:59,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:59,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:36:59,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:36:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:36:59,369 INFO L87 Difference]: Start difference. First operand 268 states and 302 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:37:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:00,044 INFO L93 Difference]: Finished difference Result 275 states and 310 transitions. [2021-11-19 14:37:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:37:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-19 14:37:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:00,046 INFO L225 Difference]: With dead ends: 275 [2021-11-19 14:37:00,046 INFO L226 Difference]: Without dead ends: 275 [2021-11-19 14:37:00,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:37:00,047 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 210 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:00,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 204 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:37:00,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-19 14:37:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2021-11-19 14:37:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 194 states have (on average 1.577319587628866) internal successors, (306), 268 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:37:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 310 transitions. [2021-11-19 14:37:00,057 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 310 transitions. Word has length 61 [2021-11-19 14:37:00,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:00,057 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 310 transitions. [2021-11-19 14:37:00,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:37:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 310 transitions. [2021-11-19 14:37:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 14:37:00,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:00,059 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:00,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:00,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:00,272 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:37:00,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:00,273 INFO L85 PathProgramCache]: Analyzing trace with hash -311284141, now seen corresponding path program 1 times [2021-11-19 14:37:00,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:00,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688292935] [2021-11-19 14:37:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:00,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:00,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:00,275 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:00,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:37:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:00,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:37:00,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:00,988 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-19 14:37:00,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-19 14:37:01,021 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 14:37:01,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 36 treesize of output 40 [2021-11-19 14:37:01,653 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-19 14:37:01,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 63 [2021-11-19 14:37:01,666 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 14:37:01,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 51 [2021-11-19 14:37:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:37:01,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:04,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 61 [2021-11-19 14:37:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:37:04,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:04,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688292935] [2021-11-19 14:37:04,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688292935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:04,551 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:04,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 14:37:04,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692269885] [2021-11-19 14:37:04,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:04,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:37:04,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:37:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:37:04,553 INFO L87 Difference]: Start difference. First operand 272 states and 310 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:37:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:07,703 INFO L93 Difference]: Finished difference Result 275 states and 313 transitions. [2021-11-19 14:37:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:37:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2021-11-19 14:37:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:07,707 INFO L225 Difference]: With dead ends: 275 [2021-11-19 14:37:07,707 INFO L226 Difference]: Without dead ends: 275 [2021-11-19 14:37:07,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:37:07,708 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 9 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:07,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1372 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 255 Unchecked, 2.9s Time] [2021-11-19 14:37:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-19 14:37:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-19 14:37:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 197 states have (on average 1.5685279187817258) internal successors, (309), 271 states have internal predecessors, (309), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:37:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 313 transitions. [2021-11-19 14:37:07,718 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 313 transitions. Word has length 61 [2021-11-19 14:37:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:07,718 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 313 transitions. [2021-11-19 14:37:07,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:37:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 313 transitions. [2021-11-19 14:37:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 14:37:07,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:07,720 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:07,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:07,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:07,939 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:37:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash -631451440, now seen corresponding path program 1 times [2021-11-19 14:37:07,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:07,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308979614] [2021-11-19 14:37:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:07,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:07,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:07,942 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:07,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:37:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:08,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:37:08,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:08,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:37:08,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-19 14:37:08,831 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-19 14:37:08,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 37 [2021-11-19 14:37:08,941 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:37:08,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 21 [2021-11-19 14:37:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:37:08,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:11,066 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem125#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:37:13,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:37:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:37:13,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:13,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308979614] [2021-11-19 14:37:13,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308979614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:13,225 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:13,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-19 14:37:13,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645248497] [2021-11-19 14:37:13,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:13,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:37:13,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:37:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-19 14:37:13,226 INFO L87 Difference]: Start difference. First operand 275 states and 313 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:37:31,696 WARN L227 SmtUtils]: Spent 16.22s on a formula simplification. DAG size of input: 56 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:37:40,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:40,689 INFO L93 Difference]: Finished difference Result 273 states and 310 transitions. [2021-11-19 14:37:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:37:40,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-19 14:37:40,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:40,691 INFO L225 Difference]: With dead ends: 273 [2021-11-19 14:37:40,691 INFO L226 Difference]: Without dead ends: 273 [2021-11-19 14:37:40,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=5, NotChecked=46, Total=210 [2021-11-19 14:37:40,692 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 239 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 564 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:40,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1055 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 274 Invalid, 0 Unknown, 564 Unchecked, 1.0s Time] [2021-11-19 14:37:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-19 14:37:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-11-19 14:37:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 197 states have (on average 1.5532994923857868) internal successors, (306), 269 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:37:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 310 transitions. [2021-11-19 14:37:40,702 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 310 transitions. Word has length 64 [2021-11-19 14:37:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:40,702 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 310 transitions. [2021-11-19 14:37:40,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:37:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 310 transitions. [2021-11-19 14:37:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 14:37:40,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:40,704 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:40,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:40,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:40,924 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:37:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash -631451439, now seen corresponding path program 1 times [2021-11-19 14:37:40,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:40,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641693095] [2021-11-19 14:37:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:40,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:40,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:40,926 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:40,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:37:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:41,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:37:41,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:41,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 10 [2021-11-19 14:37:41,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:37:41,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 14:37:41,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 14:37:41,683 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:37:41,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-19 14:37:41,723 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:37:41,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-19 14:37:41,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 33 [2021-11-19 14:37:41,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-11-19 14:37:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:37:41,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:52,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:37:52,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:37:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:37:53,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:53,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641693095] [2021-11-19 14:37:53,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641693095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:53,037 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:53,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 14:37:53,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40028264] [2021-11-19 14:37:53,038 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:53,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:37:53,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:53,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:37:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2021-11-19 14:37:53,040 INFO L87 Difference]: Start difference. First operand 273 states and 310 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:37:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:57,907 INFO L93 Difference]: Finished difference Result 272 states and 309 transitions. [2021-11-19 14:37:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:37:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-19 14:37:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:57,912 INFO L225 Difference]: With dead ends: 272 [2021-11-19 14:37:57,913 INFO L226 Difference]: Without dead ends: 272 [2021-11-19 14:37:57,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=53, Invalid=128, Unknown=1, NotChecked=0, Total=182 [2021-11-19 14:37:57,914 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 238 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:57,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 1217 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 439 Invalid, 0 Unknown, 85 Unchecked, 4.7s Time] [2021-11-19 14:37:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-19 14:37:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-19 14:37:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 197 states have (on average 1.5482233502538072) internal successors, (305), 268 states have internal predecessors, (305), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:37:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 309 transitions. [2021-11-19 14:37:57,922 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 309 transitions. Word has length 64 [2021-11-19 14:37:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:57,922 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 309 transitions. [2021-11-19 14:37:57,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:37:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 309 transitions. [2021-11-19 14:37:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:37:57,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:57,924 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:57,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:58,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:58,143 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:37:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash -889593477, now seen corresponding path program 1 times [2021-11-19 14:37:58,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:58,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171484461] [2021-11-19 14:37:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:58,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:58,146 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:58,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:37:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:58,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:37:58,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:58,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 10 [2021-11-19 14:37:58,889 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:37:58,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-19 14:37:58,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-19 14:37:59,211 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:37:59,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-19 14:37:59,454 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:37:59,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-19 14:37:59,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2021-11-19 14:37:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:37:59,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:59,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:37:59,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-19 14:38:10,056 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:38:12,121 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse3 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem125#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_1)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:38:18,232 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-11-19 14:38:18,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 112 [2021-11-19 14:38:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:38:18,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:18,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171484461] [2021-11-19 14:38:18,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171484461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:18,562 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:18,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-11-19 14:38:18,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087364077] [2021-11-19 14:38:18,563 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:18,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:38:18,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:38:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=139, Unknown=5, NotChecked=50, Total=240 [2021-11-19 14:38:18,565 INFO L87 Difference]: Start difference. First operand 272 states and 309 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:38:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:21,663 INFO L93 Difference]: Finished difference Result 289 states and 325 transitions. [2021-11-19 14:38:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:38:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-19 14:38:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:21,665 INFO L225 Difference]: With dead ends: 289 [2021-11-19 14:38:21,665 INFO L226 Difference]: Without dead ends: 289 [2021-11-19 14:38:21,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=83, Invalid=226, Unknown=5, NotChecked=66, Total=380 [2021-11-19 14:38:21,666 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 474 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 607 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:21,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 873 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 454 Invalid, 0 Unknown, 607 Unchecked, 2.4s Time] [2021-11-19 14:38:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-19 14:38:21,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 278. [2021-11-19 14:38:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 203 states have (on average 1.5467980295566504) internal successors, (314), 274 states have internal predecessors, (314), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:38:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 318 transitions. [2021-11-19 14:38:21,675 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 318 transitions. Word has length 68 [2021-11-19 14:38:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:21,675 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 318 transitions. [2021-11-19 14:38:21,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:38:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 318 transitions. [2021-11-19 14:38:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:38:21,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:21,677 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:38:21,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:21,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:21,880 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:38:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash -889593476, now seen corresponding path program 1 times [2021-11-19 14:38:21,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:21,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439351824] [2021-11-19 14:38:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:21,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:21,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:21,882 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:21,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:38:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:22,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:38:22,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:22,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 11 [2021-11-19 14:38:22,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-19 14:38:22,491 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:38:22,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-19 14:38:22,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 14:38:22,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 14:38:22,794 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:38:22,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2021-11-19 14:38:22,842 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:38:22,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 50 [2021-11-19 14:38:23,081 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:38:23,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-19 14:38:23,127 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-19 14:38:23,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-19 14:38:23,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 37 [2021-11-19 14:38:23,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-11-19 14:38:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:38:23,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:24,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:38:24,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-19 14:38:24,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:38:24,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-19 14:38:26,360 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse0 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|)) (.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base|) .cse0 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base|) .cse0 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse2 ((_ sign_extend 32) (_ bv0 32))) (.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))) (bvule (bvadd .cse2 .cse3) (bvadd .cse2 (_ bv1 64) .cse3))))) is different from false [2021-11-19 14:38:28,473 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))))))) is different from false [2021-11-19 14:38:47,299 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:38:48,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:48,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:48,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:38:48,916 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 14:38:48,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-19 14:38:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:38:48,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:48,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439351824] [2021-11-19 14:38:48,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439351824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:49,000 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:49,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-19 14:38:49,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252165320] [2021-11-19 14:38:49,000 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:49,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:38:49,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:38:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=192, Unknown=6, NotChecked=58, Total=306 [2021-11-19 14:38:49,001 INFO L87 Difference]: Start difference. First operand 278 states and 318 transitions. Second operand has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:39:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:39:03,467 INFO L93 Difference]: Finished difference Result 288 states and 323 transitions. [2021-11-19 14:39:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:39:03,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-19 14:39:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:39:03,471 INFO L225 Difference]: With dead ends: 288 [2021-11-19 14:39:03,471 INFO L226 Difference]: Without dead ends: 288 [2021-11-19 14:39:03,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=133, Invalid=421, Unknown=6, NotChecked=90, Total=650 [2021-11-19 14:39:03,472 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 481 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:39:03,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 976 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 846 Invalid, 0 Unknown, 503 Unchecked, 10.6s Time] [2021-11-19 14:39:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-19 14:39:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 278. [2021-11-19 14:39:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 203 states have (on average 1.5369458128078817) internal successors, (312), 274 states have internal predecessors, (312), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:39:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 316 transitions. [2021-11-19 14:39:03,481 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 316 transitions. Word has length 68 [2021-11-19 14:39:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:39:03,481 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 316 transitions. [2021-11-19 14:39:03,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 14:39:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 316 transitions. [2021-11-19 14:39:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:39:03,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:39:03,483 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:39:03,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-19 14:39:03,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:39:03,713 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-19 14:39:03,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:39:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash -269261804, now seen corresponding path program 1 times [2021-11-19 14:39:03,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:39:03,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112973123] [2021-11-19 14:39:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:39:03,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:39:03,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:39:03,716 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:39:03,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee465989-d2cf-4869-8213-cfff52be7f02/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 14:39:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:39:04,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:39:04,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:39:04,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 10 [2021-11-19 14:39:04,458 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 14:39:04,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-19 14:39:04,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-19 14:39:04,789 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:39:04,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 45 [2021-11-19 14:39:05,034 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-19 14:39:05,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 49 [2021-11-19 14:39:05,365 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-19 14:39:05,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 49 [2021-11-19 14:39:05,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2021-11-19 14:39:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 14:39:05,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:39:05,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:05,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 14:39:16,240 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:39:16,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:39:16,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-19 14:39:18,321 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:39:20,364 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))) (_ bv1 1)))) is different from false [2021-11-19 14:39:22,449 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem125#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))))) (_ bv1 1)))) is different from false