./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/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_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cbab6fa89ec0662a3f26b65a5642d5ae526485e7fe3ba965ed5a2823e941a06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:25:51,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:25:51,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:25:51,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:25:51,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:25:51,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:25:51,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:25:51,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:25:51,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:25:51,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:25:51,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:25:51,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:25:51,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:25:51,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:25:51,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:25:51,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:25:51,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:25:51,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:25:51,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:25:51,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:25:51,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:25:51,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:25:51,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:25:51,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:25:51,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:25:51,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:25:51,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:25:51,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:25:51,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:25:51,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:25:51,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:25:51,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:25:51,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:25:51,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:25:51,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:25:51,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:25:51,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:25:51,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:25:51,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:25:51,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:25:51,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:25:51,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:25:51,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:25:51,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:25:51,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:25:51,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:25:51,918 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:25:51,918 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:25:51,919 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:25:51,919 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:25:51,919 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:25:51,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:25:51,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:25:51,920 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:25:51,920 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:25:51,920 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:25:51,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:25:51,920 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:25:51,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:25:51,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:25:51,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:25:51,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:25:51,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:25:51,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:25:51,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:25:51,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:25:51,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:25:51,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:25:51,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:25:51,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:25:51,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:25:51,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:25:51,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:25:51,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:25:51,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:25:51,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:25:51,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:25:51,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:25:51,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:25:51,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:25:51,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:25:51,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:25:51,926 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_71a628e5-99fb-4796-adc3-13c65ae3ee91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cbab6fa89ec0662a3f26b65a5642d5ae526485e7fe3ba965ed5a2823e941a06 [2021-11-19 13:25:52,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:25:52,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:25:52,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:25:52,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:25:52,199 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:25:52,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c [2021-11-19 13:25:52,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/76d881040/78e8c2fccd67446f80530fb3fb071903/FLAGbb6894be4 [2021-11-19 13:25:52,876 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:25:52,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c [2021-11-19 13:25:52,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/76d881040/78e8c2fccd67446f80530fb3fb071903/FLAGbb6894be4 [2021-11-19 13:25:53,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/76d881040/78e8c2fccd67446f80530fb3fb071903 [2021-11-19 13:25:53,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:25:53,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:25:53,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:53,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:25:53,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:25:53,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:53" (1/1) ... [2021-11-19 13:25:53,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292f927e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:53, skipping insertion in model container [2021-11-19 13:25:53,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:53" (1/1) ... [2021-11-19 13:25:53,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:25:53,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:25:53,609 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_71a628e5-99fb-4796-adc3-13c65ae3ee91/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c[72918,72931] [2021-11-19 13:25:53,626 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:53,655 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 13:25:53,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@301bedd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:53, skipping insertion in model container [2021-11-19 13:25:53,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:53,656 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:25:53,661 INFO L158 Benchmark]: Toolchain (without parser) took 540.92ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 45.0MB in the beginning and 70.6MB in the end (delta: -25.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-19 13:25:53,662 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:25:53,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 525.61ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 44.8MB in the beginning and 70.6MB in the end (delta: -25.8MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-19 13:25:53,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 525.61ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 44.8MB in the beginning and 70.6MB in the end (delta: -25.8MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: 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_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/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_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cbab6fa89ec0662a3f26b65a5642d5ae526485e7fe3ba965ed5a2823e941a06 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:25:56,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:25:56,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:25:56,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:25:56,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:25:56,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:25:56,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:25:56,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:25:56,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:25:56,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:25:56,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:25:56,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:25:56,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:25:56,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:25:56,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:25:56,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:25:56,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:25:56,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:25:56,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:25:56,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:25:56,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:25:56,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:25:56,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:25:56,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:25:56,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:25:56,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:25:56,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:25:56,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:25:56,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:25:56,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:25:56,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:25:56,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:25:56,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:25:56,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:25:56,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:25:56,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:25:56,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:25:56,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:25:56,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:25:56,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:25:56,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:25:56,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:25:56,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:25:56,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:25:56,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:25:56,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:25:56,239 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:25:56,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:25:56,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:25:56,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:25:56,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:25:56,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:25:56,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:25:56,242 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:25:56,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:25:56,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:25:56,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:25:56,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:25:56,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:25:56,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:25:56,243 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:25:56,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:25:56,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:25:56,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:25:56,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:25:56,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:25:56,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:25:56,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:25:56,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:25:56,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:25:56,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:25:56,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:25:56,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:25:56,246 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:25:56,247 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:56,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:25:56,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:25:56,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:25:56,248 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_71a628e5-99fb-4796-adc3-13c65ae3ee91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cbab6fa89ec0662a3f26b65a5642d5ae526485e7fe3ba965ed5a2823e941a06 [2021-11-19 13:25:56,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:25:56,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:25:56,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:25:56,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:25:56,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:25:56,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c [2021-11-19 13:25:56,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/f8f340922/4eac3e945cc94df9ba28c819e6115fea/FLAGea52c07fb [2021-11-19 13:25:57,514 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:25:57,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c [2021-11-19 13:25:57,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/f8f340922/4eac3e945cc94df9ba28c819e6115fea/FLAGea52c07fb [2021-11-19 13:25:57,737 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/data/f8f340922/4eac3e945cc94df9ba28c819e6115fea [2021-11-19 13:25:57,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:25:57,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:25:57,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:57,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:25:57,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:25:57,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:57" (1/1) ... [2021-11-19 13:25:57,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2643b255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:57, skipping insertion in model container [2021-11-19 13:25:57,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:25:57" (1/1) ... [2021-11-19 13:25:57,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:25:57,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:25:58,357 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_71a628e5-99fb-4796-adc3-13c65ae3ee91/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c[72918,72931] [2021-11-19 13:25:58,367 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:58,385 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:25:58,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:25:58,556 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_71a628e5-99fb-4796-adc3-13c65ae3ee91/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c[72918,72931] [2021-11-19 13:25:58,559 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:58,601 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:25:58,754 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_71a628e5-99fb-4796-adc3-13c65ae3ee91/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c[72918,72931] [2021-11-19 13:25:58,764 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:25:58,787 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:25:58,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58 WrapperNode [2021-11-19 13:25:58,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:25:58,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:25:58,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:25:58,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:25:58,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:58,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:58,915 INFO L137 Inliner]: procedures = 36, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 756 [2021-11-19 13:25:58,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:25:58,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:25:58,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:25:58,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:25:58,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:58,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:58,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:58,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:59,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:59,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:59,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:59,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:25:59,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:25:59,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:25:59,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:25:59,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (1/1) ... [2021-11-19 13:25:59,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:25:59,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:25:59,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:25:59,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:25:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:25:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:25:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:25:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:25:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:25:59,330 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:25:59,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:25:59,353 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:26:08,720 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-19 13:26:08,721 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-19 13:26:08,721 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:26:08,729 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:26:08,730 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:26:08,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:26:08 BoogieIcfgContainer [2021-11-19 13:26:08,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:26:08,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:26:08,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:26:08,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:26:08,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:25:57" (1/3) ... [2021-11-19 13:26:08,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565eac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:26:08, skipping insertion in model container [2021-11-19 13:26:08,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:25:58" (2/3) ... [2021-11-19 13:26:08,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565eac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:26:08, skipping insertion in model container [2021-11-19 13:26:08,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:26:08" (3/3) ... [2021-11-19 13:26:08,743 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-1.c [2021-11-19 13:26:08,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:26:08,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:26:08,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:26:08,843 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 13:26:08,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:26:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:26:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 13:26:08,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:08,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:08,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:08,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1383952291, now seen corresponding path program 1 times [2021-11-19 13:26:08,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:08,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849708406] [2021-11-19 13:26:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:08,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:08,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:08,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:26:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:09,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:26:09,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:09,551 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 13:26:09,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:09,838 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 13:26:09,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:09,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849708406] [2021-11-19 13:26:09,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849708406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:09,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:09,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:26:09,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140714493] [2021-11-19 13:26:09,843 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:09,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:26:09,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:26:09,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:09,879 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 13:26:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:10,034 INFO L93 Difference]: Finished difference Result 553 states and 933 transitions. [2021-11-19 13:26:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:26:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-19 13:26:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:10,052 INFO L225 Difference]: With dead ends: 553 [2021-11-19 13:26:10,052 INFO L226 Difference]: Without dead ends: 377 [2021-11-19 13:26:10,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:10,060 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 370 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:10,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 677 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:26:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-19 13:26:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-19 13:26:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.5186170212765957) internal successors, (571), 376 states have internal predecessors, (571), 0 states have call successors, (0), 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 13:26:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 571 transitions. [2021-11-19 13:26:10,127 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 571 transitions. Word has length 48 [2021-11-19 13:26:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:10,127 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 571 transitions. [2021-11-19 13:26:10,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 13:26:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 571 transitions. [2021-11-19 13:26:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 13:26:10,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:10,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:10,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:10,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:10,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:10,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash -511791490, now seen corresponding path program 1 times [2021-11-19 13:26:10,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:10,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334097903] [2021-11-19 13:26:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:10,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:10,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:10,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:10,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:26:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:10,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:26:10,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:26:11,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:26:11,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:11,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334097903] [2021-11-19 13:26:11,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334097903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:11,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:11,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:26:11,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741097615] [2021-11-19 13:26:11,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:11,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:26:11,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:26:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:11,571 INFO L87 Difference]: Start difference. First operand 377 states and 571 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 13:26:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:11,727 INFO L93 Difference]: Finished difference Result 860 states and 1312 transitions. [2021-11-19 13:26:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:26:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 108 [2021-11-19 13:26:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:11,733 INFO L225 Difference]: With dead ends: 860 [2021-11-19 13:26:11,733 INFO L226 Difference]: Without dead ends: 614 [2021-11-19 13:26:11,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:11,737 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 290 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:11,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 729 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:26:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-19 13:26:11,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2021-11-19 13:26:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.5154975530179446) internal successors, (929), 613 states have internal predecessors, (929), 0 states have call successors, (0), 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 13:26:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 929 transitions. [2021-11-19 13:26:11,780 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 929 transitions. Word has length 108 [2021-11-19 13:26:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:11,781 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 929 transitions. [2021-11-19 13:26:11,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 13:26:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 929 transitions. [2021-11-19 13:26:11,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-19 13:26:11,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:11,797 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:11,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 13:26:12,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:12,016 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:12,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -868750118, now seen corresponding path program 1 times [2021-11-19 13:26:12,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:12,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130596381] [2021-11-19 13:26:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:12,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:12,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:12,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:26:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:12,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:26:12,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 13:26:12,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 13:26:13,528 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:13,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130596381] [2021-11-19 13:26:13,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130596381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:13,529 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:13,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:26:13,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815480070] [2021-11-19 13:26:13,530 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:13,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:26:13,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:26:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:13,532 INFO L87 Difference]: Start difference. First operand 614 states and 929 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 13:26:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:13,750 INFO L93 Difference]: Finished difference Result 1336 states and 2029 transitions. [2021-11-19 13:26:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:26:13,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 169 [2021-11-19 13:26:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:13,758 INFO L225 Difference]: With dead ends: 1336 [2021-11-19 13:26:13,758 INFO L226 Difference]: Without dead ends: 853 [2021-11-19 13:26:13,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:13,761 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 296 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:13,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 732 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:26:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-11-19 13:26:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2021-11-19 13:26:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.511737089201878) internal successors, (1288), 852 states have internal predecessors, (1288), 0 states have call successors, (0), 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 13:26:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1288 transitions. [2021-11-19 13:26:13,802 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1288 transitions. Word has length 169 [2021-11-19 13:26:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:13,803 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 1288 transitions. [2021-11-19 13:26:13,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 13:26:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1288 transitions. [2021-11-19 13:26:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 13:26:13,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:13,808 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:13,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:14,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:14,009 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash -438302228, now seen corresponding path program 1 times [2021-11-19 13:26:14,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:14,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167604937] [2021-11-19 13:26:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:14,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:14,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:14,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:26:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:14,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 13:26:14,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:14,739 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 13 treesize of output 9 [2021-11-19 13:26:14,755 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 13 treesize of output 9 [2021-11-19 13:26:14,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:14,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-19 13:26:14,870 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 0 case distinctions, treesize of input 169 treesize of output 158 [2021-11-19 13:26:15,391 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-19 13:26:15,391 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 8 case distinctions, treesize of input 797 treesize of output 769 [2021-11-19 13:26:15,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:15,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-19 13:26:15,544 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 0 case distinctions, treesize of input 169 treesize of output 158 [2021-11-19 13:26:15,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,678 INFO L244 Elim1Store]: Index analysis took 105 ms [2021-11-19 13:26:15,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2021-11-19 13:26:15,808 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-19 13:26:15,808 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 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-19 13:26:15,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:15,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-19 13:26:15,878 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 37 treesize of output 25 [2021-11-19 13:26:15,883 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 22 treesize of output 10 [2021-11-19 13:26:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-19 13:26:16,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:17,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:17,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-19 13:26:17,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:17,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-19 13:26:17,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:17,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 287 [2021-11-19 13:26:17,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:17,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 404 [2021-11-19 13:26:17,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:17,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 461 [2021-11-19 13:26:17,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:26:17,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 578 [2021-11-19 13:26:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-19 13:26:17,732 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:17,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167604937] [2021-11-19 13:26:17,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167604937] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:17,733 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:17,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 13:26:17,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688399859] [2021-11-19 13:26:17,734 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:17,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:26:17,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:17,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:26:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:26:17,739 INFO L87 Difference]: Start difference. First operand 853 states and 1288 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 13:26:19,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:21,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:28,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:30,839 INFO L93 Difference]: Finished difference Result 1703 states and 2572 transitions. [2021-11-19 13:26:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:26:30,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 210 [2021-11-19 13:26:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:30,849 INFO L225 Difference]: With dead ends: 1703 [2021-11-19 13:26:30,849 INFO L226 Difference]: Without dead ends: 853 [2021-11-19 13:26:30,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:26:30,851 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 12 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:30,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 985 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 2 Unknown, 58 Unchecked, 13.0s Time] [2021-11-19 13:26:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-11-19 13:26:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2021-11-19 13:26:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.5105633802816902) internal successors, (1287), 852 states have internal predecessors, (1287), 0 states have call successors, (0), 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 13:26:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1287 transitions. [2021-11-19 13:26:30,886 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1287 transitions. Word has length 210 [2021-11-19 13:26:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:30,886 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 1287 transitions. [2021-11-19 13:26:30,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 13:26:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1287 transitions. [2021-11-19 13:26:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 13:26:30,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:30,891 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:30,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:31,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:31,113 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1311967830, now seen corresponding path program 1 times [2021-11-19 13:26:31,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:31,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520037984] [2021-11-19 13:26:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:31,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:31,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:31,115 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:31,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:26:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:31,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:26:31,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:31,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:31,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:31,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:31,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:31,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:31,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:32,081 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-19 13:26:32,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-19 13:26:32,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:32,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:32,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:32,617 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 13:26:32,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-19 13:26:34,255 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:26:34,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-19 13:26:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 13:26:34,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 13:26:35,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:35,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520037984] [2021-11-19 13:26:35,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520037984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:35,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:35,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-11-19 13:26:35,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422171580] [2021-11-19 13:26:35,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:35,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:26:35,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:26:35,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:26:35,955 INFO L87 Difference]: Start difference. First operand 853 states and 1287 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 13:26:37,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:43,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:45,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:48,922 INFO L93 Difference]: Finished difference Result 2002 states and 3019 transitions. [2021-11-19 13:26:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:26:48,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 210 [2021-11-19 13:26:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:48,932 INFO L225 Difference]: With dead ends: 2002 [2021-11-19 13:26:48,932 INFO L226 Difference]: Without dead ends: 1159 [2021-11-19 13:26:48,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 412 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:26:48,935 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 80 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:48,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 574 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 187 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2021-11-19 13:26:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-19 13:26:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1003. [2021-11-19 13:26:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.5419161676646707) internal successors, (1545), 1002 states have internal predecessors, (1545), 0 states have call successors, (0), 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 13:26:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1545 transitions. [2021-11-19 13:26:48,991 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1545 transitions. Word has length 210 [2021-11-19 13:26:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:48,992 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1545 transitions. [2021-11-19 13:26:48,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 13:26:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1545 transitions. [2021-11-19 13:26:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 13:26:48,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:48,997 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:49,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:49,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:49,215 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:49,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 95758120, now seen corresponding path program 1 times [2021-11-19 13:26:49,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:49,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616429342] [2021-11-19 13:26:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:49,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:49,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:49,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:26:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:49,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:26:49,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:50,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:26:50,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:50,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:50,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:50,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:50,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:26:50,455 INFO L354 Elim1Store]: treesize reduction 1132, result has 5.5 percent of original size [2021-11-19 13:26:50,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 76 [2021-11-19 13:26:53,065 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:26:53,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 37 [2021-11-19 13:26:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 13:26:53,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 13:26:54,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:54,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616429342] [2021-11-19 13:26:54,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616429342] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:54,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:54,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:26:54,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301222363] [2021-11-19 13:26:54,047 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:54,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:26:54,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:26:54,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:26:54,049 INFO L87 Difference]: Start difference. First operand 1003 states and 1545 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 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 13:26:56,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:58,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:00,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:07,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:09,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:13,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:14,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:17,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:19,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:31,915 INFO L93 Difference]: Finished difference Result 3404 states and 5227 transitions. [2021-11-19 13:27:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:27:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 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 210 [2021-11-19 13:27:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:31,933 INFO L225 Difference]: With dead ends: 3404 [2021-11-19 13:27:31,933 INFO L226 Difference]: Without dead ends: 2411 [2021-11-19 13:27:31,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:27:31,936 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 209 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 71 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:31,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 570 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 551 Invalid, 1 Unknown, 0 Unchecked, 37.7s Time] [2021-11-19 13:27:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2021-11-19 13:27:32,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1282. [2021-11-19 13:27:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 1.604215456674473) internal successors, (2055), 1281 states have internal predecessors, (2055), 0 states have call successors, (0), 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 13:27:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 2055 transitions. [2021-11-19 13:27:32,012 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 2055 transitions. Word has length 210 [2021-11-19 13:27:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:32,013 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 2055 transitions. [2021-11-19 13:27:32,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 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 13:27:32,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 2055 transitions. [2021-11-19 13:27:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-19 13:27:32,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:32,019 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:27:32,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:32,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:32,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:27:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:32,240 INFO L85 PathProgramCache]: Analyzing trace with hash -149215637, now seen corresponding path program 1 times [2021-11-19 13:27:32,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:32,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191033965] [2021-11-19 13:27:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:32,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:32,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:32,242 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:32,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:27:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:32,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:27:32,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:33,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:27:33,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:27:33,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:27:33,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:27:33,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:27:33,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:27:33,353 INFO L354 Elim1Store]: treesize reduction 1132, result has 5.5 percent of original size [2021-11-19 13:27:33,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 76 [2021-11-19 13:27:35,588 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:27:35,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 37 [2021-11-19 13:27:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 13:27:35,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 13:27:36,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:36,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191033965] [2021-11-19 13:27:36,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191033965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:36,436 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:36,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:27:36,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582988915] [2021-11-19 13:27:36,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:36,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:27:36,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:27:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:27:36,438 INFO L87 Difference]: Start difference. First operand 1282 states and 2055 transitions. Second operand has 6 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 0 states have call successors, (0), 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 13:27:38,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:47,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:52,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:56,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:57,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:59,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:01,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:28:11,401 INFO L93 Difference]: Finished difference Result 3934 states and 6207 transitions. [2021-11-19 13:28:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:28:11,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 0 states have call successors, (0), 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 211 [2021-11-19 13:28:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:28:11,420 INFO L225 Difference]: With dead ends: 3934 [2021-11-19 13:28:11,420 INFO L226 Difference]: Without dead ends: 2662 [2021-11-19 13:28:11,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:28:11,424 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 202 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 72 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:28:11,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 574 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 540 Invalid, 2 Unknown, 0 Unchecked, 34.7s Time] [2021-11-19 13:28:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-11-19 13:28:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 1562. [2021-11-19 13:28:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1561 states have (on average 1.6483023702754644) internal successors, (2573), 1561 states have internal predecessors, (2573), 0 states have call successors, (0), 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 13:28:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2573 transitions. [2021-11-19 13:28:11,543 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2573 transitions. Word has length 211 [2021-11-19 13:28:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:28:11,544 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 2573 transitions. [2021-11-19 13:28:11,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 0 states have call successors, (0), 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 13:28:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2573 transitions. [2021-11-19 13:28:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-19 13:28:11,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:11,551 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:28:11,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:11,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:28:11,765 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:28:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash -299491700, now seen corresponding path program 1 times [2021-11-19 13:28:11,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:11,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059846552] [2021-11-19 13:28:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:28:11,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:11,770 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:11,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:28:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:28:12,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:28:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:12,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:12,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:12,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:12,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:12,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:12,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:13,111 INFO L354 Elim1Store]: treesize reduction 1132, result has 5.5 percent of original size [2021-11-19 13:28:13,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 76 [2021-11-19 13:28:14,919 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:28:14,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 37 [2021-11-19 13:28:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 13:28:15,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 13:28:15,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:28:15,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059846552] [2021-11-19 13:28:15,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059846552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:28:15,960 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:28:15,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:28:15,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306450924] [2021-11-19 13:28:15,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:28:15,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:28:15,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:28:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:28:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:28:15,962 INFO L87 Difference]: Start difference. First operand 1562 states and 2573 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 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 13:28:18,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:20,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:21,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:38,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:39,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:46,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:48,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:28:51,240 INFO L93 Difference]: Finished difference Result 4592 states and 7463 transitions. [2021-11-19 13:28:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:28:51,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 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 240 [2021-11-19 13:28:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:28:51,272 INFO L225 Difference]: With dead ends: 4592 [2021-11-19 13:28:51,272 INFO L226 Difference]: Without dead ends: 3040 [2021-11-19 13:28:51,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:28:51,275 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 195 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 55 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:28:51,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 615 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 522 Invalid, 3 Unknown, 0 Unchecked, 35.1s Time] [2021-11-19 13:28:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-11-19 13:28:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1978. [2021-11-19 13:28:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.682346990389479) internal successors, (3326), 1977 states have internal predecessors, (3326), 0 states have call successors, (0), 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 13:28:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 3326 transitions. [2021-11-19 13:28:51,371 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 3326 transitions. Word has length 240 [2021-11-19 13:28:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:28:51,372 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 3326 transitions. [2021-11-19 13:28:51,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 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 13:28:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 3326 transitions. [2021-11-19 13:28:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-19 13:28:51,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:51,380 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:28:51,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:51,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:28:51,594 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:28:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash -961340692, now seen corresponding path program 1 times [2021-11-19 13:28:51,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:51,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670684166] [2021-11-19 13:28:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:28:51,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:51,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:51,597 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:51,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:28:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:28:52,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:28:52,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:52,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:28:52,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:52,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:52,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:52,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:52,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:28:53,010 INFO L354 Elim1Store]: treesize reduction 1132, result has 5.5 percent of original size [2021-11-19 13:28:53,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 76 [2021-11-19 13:28:54,888 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:28:54,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 37 [2021-11-19 13:28:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 13:28:55,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 13:28:55,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:28:55,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670684166] [2021-11-19 13:28:55,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670684166] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:28:55,984 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:28:55,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:28:55,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373724511] [2021-11-19 13:28:55,985 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:28:55,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:28:55,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:28:55,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:28:55,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:28:55,986 INFO L87 Difference]: Start difference. First operand 1978 states and 3326 transitions. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 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 13:28:58,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:00,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:02,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:04,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:12,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:19,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:21,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:27,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:28,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:29,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:31,698 INFO L93 Difference]: Finished difference Result 5302 states and 8686 transitions. [2021-11-19 13:29:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:29:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 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 244 [2021-11-19 13:29:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:31,715 INFO L225 Difference]: With dead ends: 5302 [2021-11-19 13:29:31,715 INFO L226 Difference]: Without dead ends: 3334 [2021-11-19 13:29:31,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:29:31,718 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 203 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 70 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:31,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 548 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 531 Invalid, 3 Unknown, 0 Unchecked, 35.5s Time] [2021-11-19 13:29:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-11-19 13:29:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2237. [2021-11-19 13:29:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2236 states have (on average 1.6940966010733454) internal successors, (3788), 2236 states have internal predecessors, (3788), 0 states have call successors, (0), 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 13:29:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3788 transitions. [2021-11-19 13:29:31,857 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3788 transitions. Word has length 244 [2021-11-19 13:29:31,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:31,857 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 3788 transitions. [2021-11-19 13:29:31,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 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 13:29:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3788 transitions. [2021-11-19 13:29:31,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-19 13:29:31,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:31,865 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:31,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:32,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:29:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash 434387151, now seen corresponding path program 1 times [2021-11-19 13:29:32,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:32,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420386481] [2021-11-19 13:29:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:32,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:32,081 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:32,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:29:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:32,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:29:32,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:32,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:32,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:33,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:33,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:33,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:33,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:29:33,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:29:33,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:29:33,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:29:33,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:29:33,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:29:33,463 INFO L354 Elim1Store]: treesize reduction 1132, result has 5.5 percent of original size [2021-11-19 13:29:33,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 76 [2021-11-19 13:29:35,430 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:29:35,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 37 [2021-11-19 13:29:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 13:29:35,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 13:29:36,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:36,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420386481] [2021-11-19 13:29:36,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420386481] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:36,406 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:36,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:29:36,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785221645] [2021-11-19 13:29:36,406 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:36,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:29:36,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:36,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:29:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:29:36,408 INFO L87 Difference]: Start difference. First operand 2237 states and 3788 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 13:29:38,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:40,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:52,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:54,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:29:59,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:08,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:13,350 INFO L93 Difference]: Finished difference Result 5528 states and 9088 transitions. [2021-11-19 13:30:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:13,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 245 [2021-11-19 13:30:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:13,366 INFO L225 Difference]: With dead ends: 5528 [2021-11-19 13:30:13,367 INFO L226 Difference]: Without dead ends: 3301 [2021-11-19 13:30:13,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:30:13,371 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 199 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:13,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 733 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 692 Invalid, 1 Unknown, 0 Unchecked, 36.7s Time] [2021-11-19 13:30:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-11-19 13:30:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 2237. [2021-11-19 13:30:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2236 states have (on average 1.68783542039356) internal successors, (3774), 2236 states have internal predecessors, (3774), 0 states have call successors, (0), 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 13:30:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3774 transitions. [2021-11-19 13:30:13,506 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3774 transitions. Word has length 245 [2021-11-19 13:30:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:13,507 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 3774 transitions. [2021-11-19 13:30:13,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 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 13:30:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3774 transitions. [2021-11-19 13:30:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-19 13:30:13,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:13,513 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:13,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:13,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:13,730 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1190000932, now seen corresponding path program 1 times [2021-11-19 13:30:13,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:13,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603862393] [2021-11-19 13:30:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:13,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:13,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:13,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:13,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:30:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:14,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:14,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:14,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:14,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:14,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:14,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:14,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:14,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:15,059 INFO L354 Elim1Store]: treesize reduction 1132, result has 5.5 percent of original size [2021-11-19 13:30:15,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 76 [2021-11-19 13:30:15,739 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:30:15,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 37 [2021-11-19 13:30:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-11-19 13:30:16,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-11-19 13:30:16,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:16,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603862393] [2021-11-19 13:30:16,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603862393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:16,677 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:16,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:30:16,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779527135] [2021-11-19 13:30:16,678 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:16,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:16,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:30:16,679 INFO L87 Difference]: Start difference. First operand 2237 states and 3774 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 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 13:30:18,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:20,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:24,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:26,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:32,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:38,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:43,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:53,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:30:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:57,172 INFO L93 Difference]: Finished difference Result 6032 states and 9957 transitions. [2021-11-19 13:30:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 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 253 [2021-11-19 13:30:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:57,189 INFO L225 Difference]: With dead ends: 6032 [2021-11-19 13:30:57,189 INFO L226 Difference]: Without dead ends: 3805 [2021-11-19 13:30:57,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:30:57,193 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 241 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 68 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:57,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 714 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 694 Invalid, 4 Unknown, 0 Unchecked, 40.2s Time] [2021-11-19 13:30:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-11-19 13:30:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 2461. [2021-11-19 13:30:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2460 states have (on average 1.6715447154471545) internal successors, (4112), 2460 states have internal predecessors, (4112), 0 states have call successors, (0), 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 13:30:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 4112 transitions. [2021-11-19 13:30:57,344 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 4112 transitions. Word has length 253 [2021-11-19 13:30:57,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:57,344 INFO L470 AbstractCegarLoop]: Abstraction has 2461 states and 4112 transitions. [2021-11-19 13:30:57,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 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 13:30:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 4112 transitions. [2021-11-19 13:30:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-19 13:30:57,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:57,351 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:57,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:57,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:57,574 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2046774459, now seen corresponding path program 1 times [2021-11-19 13:30:57,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:57,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621161303] [2021-11-19 13:30:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:57,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:57,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:57,578 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:57,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:30:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:58,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:58,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:58,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:58,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:30:58,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:58,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:58,750 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-19 13:30:58,751 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 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-19 13:30:58,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:58,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:58,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:59,159 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 13:30:59,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-19 13:31:01,455 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:31:01,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-19 13:31:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:31:01,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:31:02,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:02,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621161303] [2021-11-19 13:31:02,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621161303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:02,220 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:02,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 13:31:02,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407660889] [2021-11-19 13:31:02,220 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:02,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:31:02,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:31:02,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:02,222 INFO L87 Difference]: Start difference. First operand 2461 states and 4112 transitions. Second operand has 7 states, 7 states have (on average 28.428571428571427) internal successors, (199), 7 states have internal predecessors, (199), 0 states have call successors, (0), 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 13:31:04,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:14,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:15,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:22,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:29,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:38,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:39,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:41,671 INFO L93 Difference]: Finished difference Result 6869 states and 11102 transitions. [2021-11-19 13:31:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:31:41,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.428571428571427) internal successors, (199), 7 states have internal predecessors, (199), 0 states have call successors, (0), 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 254 [2021-11-19 13:31:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:41,697 INFO L225 Difference]: With dead ends: 6869 [2021-11-19 13:31:41,698 INFO L226 Difference]: Without dead ends: 4418 [2021-11-19 13:31:41,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:41,701 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 311 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 84 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:41,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 729 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 732 Invalid, 1 Unknown, 0 Unchecked, 39.1s Time] [2021-11-19 13:31:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2021-11-19 13:31:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 2722. [2021-11-19 13:31:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2721 states have (on average 1.6762219772142595) internal successors, (4561), 2721 states have internal predecessors, (4561), 0 states have call successors, (0), 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 13:31:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 4561 transitions. [2021-11-19 13:31:41,876 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 4561 transitions. Word has length 254 [2021-11-19 13:31:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:41,877 INFO L470 AbstractCegarLoop]: Abstraction has 2722 states and 4561 transitions. [2021-11-19 13:31:41,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.428571428571427) internal successors, (199), 7 states have internal predecessors, (199), 0 states have call successors, (0), 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 13:31:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 4561 transitions. [2021-11-19 13:31:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-19 13:31:41,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:41,885 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:41,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:42,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:42,101 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:31:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1562207625, now seen corresponding path program 1 times [2021-11-19 13:31:42,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:42,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323977915] [2021-11-19 13:31:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:42,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:42,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:42,104 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:42,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:31:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:42,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:31:42,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:31:43,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:31:43,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:31:43,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:31:43,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:31:43,281 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-19 13:31:43,282 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 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-19 13:31:43,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:31:43,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:31:43,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:31:43,630 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 13:31:43,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-19 13:31:45,941 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:31:45,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-19 13:31:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:31:46,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:31:46,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:46,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323977915] [2021-11-19 13:31:46,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323977915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:46,702 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:46,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 13:31:46,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003492816] [2021-11-19 13:31:46,702 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:46,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:31:46,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:31:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:46,704 INFO L87 Difference]: Start difference. First operand 2722 states and 4561 transitions. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 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 13:31:48,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:51,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:52,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:59,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:00,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:04,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:08,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:14,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:22,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:27,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:29,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:31,286 INFO L93 Difference]: Finished difference Result 7092 states and 11509 transitions. [2021-11-19 13:32:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:32:31,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 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 256 [2021-11-19 13:32:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:31,299 INFO L225 Difference]: With dead ends: 7092 [2021-11-19 13:32:31,299 INFO L226 Difference]: Without dead ends: 4340 [2021-11-19 13:32:31,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:32:31,303 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 297 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:31,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 702 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 726 Invalid, 1 Unknown, 0 Unchecked, 44.2s Time] [2021-11-19 13:32:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2021-11-19 13:32:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 2733. [2021-11-19 13:32:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2732 states have (on average 1.6753294289897511) internal successors, (4577), 2732 states have internal predecessors, (4577), 0 states have call successors, (0), 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 13:32:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4577 transitions. [2021-11-19 13:32:31,473 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4577 transitions. Word has length 256 [2021-11-19 13:32:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:31,474 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4577 transitions. [2021-11-19 13:32:31,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 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 13:32:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4577 transitions. [2021-11-19 13:32:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-19 13:32:31,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:31,482 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:31,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:31,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:32:31,695 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:32:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash -673578675, now seen corresponding path program 1 times [2021-11-19 13:32:31,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:31,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006745291] [2021-11-19 13:32:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:31,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:31,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:31,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:31,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:32:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:32,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:32:32,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:33,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:33,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:33,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:32:33,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:32:33,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:32:33,148 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-19 13:32:33,148 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 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-19 13:32:33,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:32:33,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:32:33,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:32:33,509 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 13:32:33,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-19 13:32:35,663 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 13:32:35,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-19 13:32:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 627 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 13:32:35,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 627 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 13:32:36,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:36,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006745291] [2021-11-19 13:32:36,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006745291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:36,768 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:36,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 13:32:36,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841742628] [2021-11-19 13:32:36,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:36,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:32:36,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:32:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:32:36,771 INFO L87 Difference]: Start difference. First operand 2733 states and 4577 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:38,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:41,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:42,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:43,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:50,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:54,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:32:59,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:06,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:15,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:21,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:23,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:25,764 INFO L93 Difference]: Finished difference Result 7357 states and 11963 transitions. [2021-11-19 13:33:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:33:25,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2021-11-19 13:33:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:25,776 INFO L225 Difference]: With dead ends: 7357 [2021-11-19 13:33:25,777 INFO L226 Difference]: Without dead ends: 4634 [2021-11-19 13:33:25,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 642 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:33:25,780 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 292 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 82 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:25,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 921 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 940 Invalid, 2 Unknown, 0 Unchecked, 48.6s Time] [2021-11-19 13:33:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2021-11-19 13:33:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 3026. [2021-11-19 13:33:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 3025 states have (on average 1.6750413223140497) internal successors, (5067), 3025 states have internal predecessors, (5067), 0 states have call successors, (0), 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 13:33:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 5067 transitions. [2021-11-19 13:33:25,921 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 5067 transitions. Word has length 325 [2021-11-19 13:33:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:25,922 INFO L470 AbstractCegarLoop]: Abstraction has 3026 states and 5067 transitions. [2021-11-19 13:33:25,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 5067 transitions. [2021-11-19 13:33:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-19 13:33:25,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:25,930 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:25,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 13:33:26,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:26,167 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1426159755, now seen corresponding path program 1 times [2021-11-19 13:33:26,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:26,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093751360] [2021-11-19 13:33:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:26,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:26,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:26,170 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:26,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a628e5-99fb-4796-adc3-13c65ae3ee91/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:33:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:30,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:33:30,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:31,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:31,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:31,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-11-19 13:33:31,549 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 143 treesize of output 131 [2021-11-19 13:33:31,555 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 131 treesize of output 107 [2021-11-19 13:33:31,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:31,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:31,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:33,029 INFO L354 Elim1Store]: treesize reduction 1579, result has 17.5 percent of original size [2021-11-19 13:33:33,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 31 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 107 treesize of output 371 [2021-11-19 13:33:54,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:54,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:54,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:33:54,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:54,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:33:55,321 INFO L354 Elim1Store]: treesize reduction 1322, result has 7.7 percent of original size [2021-11-19 13:33:55,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 391 treesize of output 509 [2021-11-19 13:36:04,792 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:04,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 109 treesize of output 45 [2021-11-19 13:36:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-19 13:36:07,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:10,789 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 589 treesize of output 493 [2021-11-19 13:36:10,795 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 493 treesize of output 301