./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.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_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/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_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/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_f4f9744c-c9ce-4194-9620-fe2288325765/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 e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:25:37,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:25:37,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:25:37,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:25:37,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:25:37,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:25:37,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:25:37,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:25:37,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:25:37,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:25:37,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:25:37,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:25:37,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:25:37,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:25:37,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:25:37,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:25:37,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:25:37,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:25:37,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:25:37,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:25:37,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:25:37,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:25:37,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:25:37,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:25:37,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:25:37,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:25:37,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:25:37,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:25:37,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:25:37,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:25:37,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:25:37,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:25:37,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:25:37,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:25:37,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:25:37,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:25:37,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:25:37,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:25:37,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:25:37,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:25:37,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:25:37,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:25:37,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:25:37,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:25:37,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:25:37,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:25:37,240 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:25:37,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:25:37,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:25:37,241 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:25:37,241 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:25:37,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:25:37,242 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:25:37,242 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:25:37,242 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:25:37,243 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:25:37,243 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:25:37,243 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:25:37,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:25:37,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:25:37,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:25:37,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:25:37,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:25:37,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:25:37,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:25:37,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:25:37,247 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:25:37,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:25:37,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:25:37,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:25:37,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:25:37,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:25:37,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:25:37,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:25:37,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:25:37,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:25:37,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:25:37,250 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:25:37,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:25:37,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:25:37,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:25:37,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:25:37,252 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_f4f9744c-c9ce-4194-9620-fe2288325765/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f [2021-11-19 14:25:37,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:25:37,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:25:37,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:25:37,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:25:37,685 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:25:37,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-19 14:25:37,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/dad6e59e9/09ebdcd2407c4c83a9168afdb6a4945c/FLAG317b905cc [2021-11-19 14:25:38,652 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:25:38,653 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-19 14:25:38,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/dad6e59e9/09ebdcd2407c4c83a9168afdb6a4945c/FLAG317b905cc [2021-11-19 14:25:38,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/dad6e59e9/09ebdcd2407c4c83a9168afdb6a4945c [2021-11-19 14:25:38,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:25:38,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:25:38,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:25:38,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:25:38,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:25:38,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:25:38" (1/1) ... [2021-11-19 14:25:38,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5b047a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:38, skipping insertion in model container [2021-11-19 14:25:38,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:25:38" (1/1) ... [2021-11-19 14:25:38,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:25:38,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:25:39,545 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_f4f9744c-c9ce-4194-9620-fe2288325765/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-19 14:25:39,558 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:25:39,588 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:25:39,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47aa671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:39, skipping insertion in model container [2021-11-19 14:25:39,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:25:39,593 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:25:39,595 INFO L158 Benchmark]: Toolchain (without parser) took 777.28ms. Allocated memory is still 98.6MB. Free memory was 62.0MB in the beginning and 63.0MB in the end (delta: -1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:25:39,598 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:25:39,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 770.85ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 63.4MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:25:39,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 770.85ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 63.4MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. 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_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/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_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/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_f4f9744c-c9ce-4194-9620-fe2288325765/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 e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:25:42,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:25:42,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:25:42,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:25:42,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:25:42,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:25:42,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:25:42,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:25:42,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:25:42,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:25:42,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:25:42,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:25:42,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:25:42,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:25:42,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:25:42,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:25:42,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:25:42,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:25:42,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:25:42,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:25:42,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:25:42,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:25:42,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:25:42,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:25:42,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:25:42,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:25:42,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:25:42,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:25:42,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:25:42,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:25:42,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:25:42,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:25:42,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:25:42,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:25:42,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:25:42,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:25:42,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:25:42,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:25:42,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:25:42,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:25:42,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:25:42,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:25:42,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:25:42,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:25:42,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:25:42,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:25:42,741 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:25:42,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:25:42,741 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:25:42,742 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:25:42,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:25:42,742 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:25:42,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:25:42,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:25:42,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:25:42,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:25:42,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:25:42,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:25:42,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:25:42,745 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:25:42,746 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:25:42,746 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:25:42,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:25:42,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:25:42,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:25:42,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:25:42,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:25:42,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:25:42,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:25:42,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:25:42,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:25:42,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:25:42,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:25:42,750 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:25:42,750 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:25:42,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:25:42,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:25:42,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:25:42,751 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_f4f9744c-c9ce-4194-9620-fe2288325765/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f [2021-11-19 14:25:43,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:25:43,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:25:43,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:25:43,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:25:43,309 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:25:43,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-19 14:25:43,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/94bafe90e/09faef2700d84735873d81492aebe826/FLAGa1fb03dcc [2021-11-19 14:25:44,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:25:44,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-19 14:25:44,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/94bafe90e/09faef2700d84735873d81492aebe826/FLAGa1fb03dcc [2021-11-19 14:25:44,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/data/94bafe90e/09faef2700d84735873d81492aebe826 [2021-11-19 14:25:44,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:25:44,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:25:44,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:25:44,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:25:44,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:25:44,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:25:44" (1/1) ... [2021-11-19 14:25:44,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aaa29f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:44, skipping insertion in model container [2021-11-19 14:25:44,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:25:44" (1/1) ... [2021-11-19 14:25:44,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:25:45,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:25:45,690 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_f4f9744c-c9ce-4194-9620-fe2288325765/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-19 14:25:45,702 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:25:45,742 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:25:45,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:25:45,953 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_f4f9744c-c9ce-4194-9620-fe2288325765/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-19 14:25:45,957 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:25:45,967 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:25:46,172 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_f4f9744c-c9ce-4194-9620-fe2288325765/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-19 14:25:46,175 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:25:46,211 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:25:46,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46 WrapperNode [2021-11-19 14:25:46,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:25:46,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:25:46,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:25:46,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:25:46,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,382 INFO L137 Inliner]: procedures = 36, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 769 [2021-11-19 14:25:46,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:25:46,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:25:46,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:25:46,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:25:46,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:25:46,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:25:46,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:25:46,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:25:46,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (1/1) ... [2021-11-19 14:25:46,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:25:46,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:25:46,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:25:46,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:25:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:25:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:25:46,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:25:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:25:46,866 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:25:46,868 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:25:46,936 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:25:58,028 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-19 14:25:58,028 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-19 14:25:58,029 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:25:58,041 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:25:58,042 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:25:58,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:25:58 BoogieIcfgContainer [2021-11-19 14:25:58,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:25:58,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:25:58,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:25:58,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:25:58,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:25:44" (1/3) ... [2021-11-19 14:25:58,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f29faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:25:58, skipping insertion in model container [2021-11-19 14:25:58,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:25:46" (2/3) ... [2021-11-19 14:25:58,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f29faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:25:58, skipping insertion in model container [2021-11-19 14:25:58,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:25:58" (3/3) ... [2021-11-19 14:25:58,056 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-2.c [2021-11-19 14:25:58,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:25:58,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:25:58,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:25:58,138 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 14:25:58,139 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:25:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 14:25:58,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:58,176 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] [2021-11-19 14:25:58,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:25:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 983008807, now seen corresponding path program 1 times [2021-11-19 14:25:58,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:25:58,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955842923] [2021-11-19 14:25:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:58,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:25:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:25:58,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:25:58,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:25:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:58,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:25:58,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:58,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:25:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:25:59,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:25:59,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955842923] [2021-11-19 14:25:59,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955842923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:59,246 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:25:59,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:25:59,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472660982] [2021-11-19 14:25:59,254 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:59,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:25:59,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:25:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:25:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:25:59,315 INFO L87 Difference]: Start difference. First operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 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 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:59,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:59,656 INFO L93 Difference]: Finished difference Result 578 states and 992 transitions. [2021-11-19 14:25:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:25:59,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 46 [2021-11-19 14:25:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:59,694 INFO L225 Difference]: With dead ends: 578 [2021-11-19 14:25:59,695 INFO L226 Difference]: Without dead ends: 395 [2021-11-19 14:25:59,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 14:25:59,704 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 390 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:59,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 667 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:25:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-19 14:25:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2021-11-19 14:25:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.532994923857868) internal successors, (604), 394 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 604 transitions. [2021-11-19 14:25:59,799 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 604 transitions. Word has length 46 [2021-11-19 14:25:59,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:59,800 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 604 transitions. [2021-11-19 14:25:59,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 604 transitions. [2021-11-19 14:25:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 14:25:59,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:59,817 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:59,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:00,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:00,032 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1606020589, now seen corresponding path program 1 times [2021-11-19 14:26:00,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:00,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295875769] [2021-11-19 14:26:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:00,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:00,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:00,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:00,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:26:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:00,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:00,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:00,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:26:01,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:01,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295875769] [2021-11-19 14:26:01,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295875769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:01,460 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:01,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:26:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872552503] [2021-11-19 14:26:01,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:01,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:26:01,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:26:01,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:26:01,465 INFO L87 Difference]: Start difference. First operand 395 states and 604 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:02,680 INFO L93 Difference]: Finished difference Result 904 states and 1402 transitions. [2021-11-19 14:26:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:26:02,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 109 [2021-11-19 14:26:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:02,689 INFO L225 Difference]: With dead ends: 904 [2021-11-19 14:26:02,690 INFO L226 Difference]: Without dead ends: 647 [2021-11-19 14:26:02,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 214 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 14:26:02,701 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 299 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:02,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 721 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:26:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-11-19 14:26:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2021-11-19 14:26:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.5247678018575852) internal successors, (985), 646 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 985 transitions. [2021-11-19 14:26:02,775 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 985 transitions. Word has length 109 [2021-11-19 14:26:02,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:02,778 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 985 transitions. [2021-11-19 14:26:02,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 985 transitions. [2021-11-19 14:26:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-19 14:26:02,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:02,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:02,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:03,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:03,024 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash 349080117, now seen corresponding path program 1 times [2021-11-19 14:26:03,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:03,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839606757] [2021-11-19 14:26:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:03,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:03,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:03,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:03,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:26:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:03,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:03,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:26:04,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:26:04,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:04,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839606757] [2021-11-19 14:26:04,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839606757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:04,863 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:04,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:26:04,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468405722] [2021-11-19 14:26:04,863 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:04,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:26:04,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:26:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:26:04,866 INFO L87 Difference]: Start difference. First operand 647 states and 985 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:05,575 INFO L93 Difference]: Finished difference Result 1280 states and 1961 transitions. [2021-11-19 14:26:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:26:05,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 175 [2021-11-19 14:26:05,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:05,584 INFO L225 Difference]: With dead ends: 1280 [2021-11-19 14:26:05,584 INFO L226 Difference]: Without dead ends: 771 [2021-11-19 14:26:05,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:26:05,594 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 142 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:05,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 579 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:26:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-19 14:26:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2021-11-19 14:26:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.518181818181818) internal successors, (1169), 770 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1169 transitions. [2021-11-19 14:26:05,654 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1169 transitions. Word has length 175 [2021-11-19 14:26:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:05,659 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1169 transitions. [2021-11-19 14:26:05,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1169 transitions. [2021-11-19 14:26:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-19 14:26:05,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:05,666 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, 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 14:26:05,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:26:05,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:05,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash -699698266, now seen corresponding path program 1 times [2021-11-19 14:26:05,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:05,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318526418] [2021-11-19 14:26:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:05,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:05,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:05,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:05,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:26:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:06,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:06,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 14:26:07,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-19 14:26:07,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:07,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318526418] [2021-11-19 14:26:07,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318526418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:07,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:07,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:26:07,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891433163] [2021-11-19 14:26:07,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:07,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:26:07,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:26:07,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:26:07,813 INFO L87 Difference]: Start difference. First operand 771 states and 1169 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 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 14:26:08,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:08,935 INFO L93 Difference]: Finished difference Result 1654 states and 2527 transitions. [2021-11-19 14:26:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:26:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 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 216 [2021-11-19 14:26:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:08,947 INFO L225 Difference]: With dead ends: 1654 [2021-11-19 14:26:08,947 INFO L226 Difference]: Without dead ends: 1021 [2021-11-19 14:26:08,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 428 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 14:26:08,952 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 295 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:08,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 724 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:26:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-19 14:26:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1021. [2021-11-19 14:26:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 1.5166666666666666) internal successors, (1547), 1020 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1547 transitions. [2021-11-19 14:26:09,022 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1547 transitions. Word has length 216 [2021-11-19 14:26:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:09,028 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 1547 transitions. [2021-11-19 14:26:09,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 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 14:26:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1547 transitions. [2021-11-19 14:26:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-19 14:26:09,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:09,037 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:09,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:09,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:09,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2106120990, now seen corresponding path program 1 times [2021-11-19 14:26:09,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:09,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799914401] [2021-11-19 14:26:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:09,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:09,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:09,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:09,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:26:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:09,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:09,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-19 14:26:10,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-19 14:26:11,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799914401] [2021-11-19 14:26:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799914401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:11,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:11,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:26:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798638279] [2021-11-19 14:26:11,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:11,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:26:11,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:26:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:26:11,683 INFO L87 Difference]: Start difference. First operand 1021 states and 1547 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:12,419 INFO L93 Difference]: Finished difference Result 2027 states and 3083 transitions. [2021-11-19 14:26:12,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:26:12,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2021-11-19 14:26:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:12,430 INFO L225 Difference]: With dead ends: 2027 [2021-11-19 14:26:12,430 INFO L226 Difference]: Without dead ends: 1144 [2021-11-19 14:26:12,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:26:12,433 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:12,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:26:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-11-19 14:26:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1144. [2021-11-19 14:26:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 1.5126859142607174) internal successors, (1729), 1143 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1729 transitions. [2021-11-19 14:26:12,488 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1729 transitions. Word has length 300 [2021-11-19 14:26:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:12,489 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 1729 transitions. [2021-11-19 14:26:12,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1729 transitions. [2021-11-19 14:26:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-19 14:26:12,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:12,499 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, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:12,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:12,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:12,712 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1146342820, now seen corresponding path program 1 times [2021-11-19 14:26:12,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:12,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382394824] [2021-11-19 14:26:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:12,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:12,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:12,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:26:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:13,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:13,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-19 14:26:14,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-19 14:26:15,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:15,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382394824] [2021-11-19 14:26:15,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382394824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:15,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:15,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:26:15,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985601045] [2021-11-19 14:26:15,443 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:15,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:26:15,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:26:15,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:26:15,448 INFO L87 Difference]: Start difference. First operand 1144 states and 1729 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:16,729 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 14:26:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:17,002 INFO L93 Difference]: Finished difference Result 2400 states and 3646 transitions. [2021-11-19 14:26:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:26:17,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 339 [2021-11-19 14:26:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:17,014 INFO L225 Difference]: With dead ends: 2400 [2021-11-19 14:26:17,015 INFO L226 Difference]: Without dead ends: 1394 [2021-11-19 14:26:17,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 674 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 14:26:17,019 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 304 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:17,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 724 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:26:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-19 14:26:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2021-11-19 14:26:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.511127063890883) internal successors, (2105), 1393 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2105 transitions. [2021-11-19 14:26:17,105 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2105 transitions. Word has length 339 [2021-11-19 14:26:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:17,106 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 2105 transitions. [2021-11-19 14:26:17,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2105 transitions. [2021-11-19 14:26:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-19 14:26:17,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:17,120 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:26:17,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:17,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:17,340 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:17,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:17,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1795384531, now seen corresponding path program 1 times [2021-11-19 14:26:17,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:17,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229230338] [2021-11-19 14:26:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:17,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:17,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:17,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:17,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:26:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:18,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:18,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-19 14:26:19,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-19 14:26:20,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:20,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229230338] [2021-11-19 14:26:20,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229230338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:20,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:20,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:26:20,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162914765] [2021-11-19 14:26:20,343 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:20,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:26:20,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:20,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:26:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:26:20,349 INFO L87 Difference]: Start difference. First operand 1394 states and 2105 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:21,128 INFO L93 Difference]: Finished difference Result 2774 states and 4200 transitions. [2021-11-19 14:26:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:26:21,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 426 [2021-11-19 14:26:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:21,141 INFO L225 Difference]: With dead ends: 2774 [2021-11-19 14:26:21,142 INFO L226 Difference]: Without dead ends: 1518 [2021-11-19 14:26:21,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:26:21,145 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:21,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 577 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:26:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-11-19 14:26:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1518. [2021-11-19 14:26:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 1.5082399472643375) internal successors, (2288), 1517 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2288 transitions. [2021-11-19 14:26:21,214 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2288 transitions. Word has length 426 [2021-11-19 14:26:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:21,215 INFO L470 AbstractCegarLoop]: Abstraction has 1518 states and 2288 transitions. [2021-11-19 14:26:21,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2288 transitions. [2021-11-19 14:26:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-19 14:26:21,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:21,231 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-19 14:26:21,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:21,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:21,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:21,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash -483119247, now seen corresponding path program 1 times [2021-11-19 14:26:21,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:21,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493827594] [2021-11-19 14:26:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:21,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:21,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:21,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:26:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:22,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:22,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2021-11-19 14:26:23,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2021-11-19 14:26:24,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:24,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493827594] [2021-11-19 14:26:24,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493827594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:24,395 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:24,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:26:24,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265631610] [2021-11-19 14:26:24,395 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:24,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:26:24,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:24,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:26:24,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:26:24,398 INFO L87 Difference]: Start difference. First operand 1518 states and 2288 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:25,020 INFO L93 Difference]: Finished difference Result 3147 states and 4761 transitions. [2021-11-19 14:26:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:26:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 470 [2021-11-19 14:26:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:25,034 INFO L225 Difference]: With dead ends: 3147 [2021-11-19 14:26:25,035 INFO L226 Difference]: Without dead ends: 1767 [2021-11-19 14:26:25,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 936 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 14:26:25,038 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 294 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:25,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 722 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:26:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-19 14:26:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2021-11-19 14:26:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.506228765571914) internal successors, (2660), 1766 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2660 transitions. [2021-11-19 14:26:25,118 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2660 transitions. Word has length 470 [2021-11-19 14:26:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:25,119 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2660 transitions. [2021-11-19 14:26:25,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2660 transitions. [2021-11-19 14:26:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-19 14:26:25,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:25,129 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 14:26:25,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:25,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:25,357 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1059985507, now seen corresponding path program 1 times [2021-11-19 14:26:25,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:25,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313937633] [2021-11-19 14:26:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:25,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:25,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:25,364 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:25,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:26:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:27,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:26:27,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:27,561 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 14:26:27,575 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 14:26:27,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:27,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 14:26:27,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:27,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-19 14:26:27,774 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 336 treesize of output 319 [2021-11-19 14:26:28,398 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-19 14:26:28,400 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 1289 treesize of output 1241 [2021-11-19 14:26:28,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:28,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 14:26:28,564 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:28,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-19 14:26:28,589 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 336 treesize of output 319 [2021-11-19 14:26:28,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,791 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 97 treesize of output 49 [2021-11-19 14:26:28,937 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-19 14:26:28,938 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 14:26:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:28,981 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 14:26:29,023 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 14:26:29,029 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 14:26:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2021-11-19 14:26:30,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:32,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:32,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-19 14:26:32,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:32,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-19 14:26:32,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:32,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-19 14:26:32,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:32,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-19 14:26:32,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:32,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-19 14:26:32,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:32,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-19 14:26:32,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:32,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-19 14:26:33,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:33,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-19 14:26:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2021-11-19 14:26:33,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:33,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313937633] [2021-11-19 14:26:33,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313937633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:33,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:33,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:26:33,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285443989] [2021-11-19 14:26:33,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:33,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:26:33,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:33,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:26:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:26:33,678 INFO L87 Difference]: Start difference. First operand 1767 states and 2660 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:35,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:26:37,723 WARN L515 Checker$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 14:26:40,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:26:44,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:26:50,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:26:51,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:26:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:53,101 INFO L93 Difference]: Finished difference Result 3531 states and 5316 transitions. [2021-11-19 14:26:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:26:53,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 553 [2021-11-19 14:26:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:53,117 INFO L225 Difference]: With dead ends: 3531 [2021-11-19 14:26:53,117 INFO L226 Difference]: Without dead ends: 1767 [2021-11-19 14:26:53,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1097 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:26:53,126 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 12 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:53,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 862 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 59 Unchecked, 19.2s Time] [2021-11-19 14:26:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-19 14:26:53,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2021-11-19 14:26:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.5056625141562854) internal successors, (2659), 1766 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2659 transitions. [2021-11-19 14:26:53,209 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2659 transitions. Word has length 553 [2021-11-19 14:26:53,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:53,209 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2659 transitions. [2021-11-19 14:26:53,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:26:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2659 transitions. [2021-11-19 14:26:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-19 14:26:53,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:53,219 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 14:26:53,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:53,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:53,432 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1194022431, now seen corresponding path program 1 times [2021-11-19 14:26:53,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:53,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53014767] [2021-11-19 14:26:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:53,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:53,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:53,436 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:53,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:26:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:56,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:26:56,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:56,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:56,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:56,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:26:56,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:26:56,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:26:56,595 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-19 14:26:56,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-19 14:26:56,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:26:56,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:26:56,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:26:57,179 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 14:26:57,180 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 14:27:00,112 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:27:00,113 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 14:27:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1524 proven. 0 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2021-11-19 14:27:01,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:27:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1524 proven. 0 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2021-11-19 14:27:02,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:27:02,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53014767] [2021-11-19 14:27:02,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53014767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:02,924 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:02,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 14:27:02,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351939532] [2021-11-19 14:27:02,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:02,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:27:02,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:27:02,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:27:02,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:27:02,927 INFO L87 Difference]: Start difference. First operand 1767 states and 2659 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:04,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:07,836 WARN L515 Checker$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 14:27:12,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:15,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:18,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:24,934 WARN L515 Checker$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 14:27:26,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:29,014 WARN L515 Checker$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 14:27:34,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:36,068 WARN L515 Checker$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 14:27:42,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:44,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:46,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:52,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:27:57,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:27:57,485 INFO L93 Difference]: Finished difference Result 7750 states and 11707 transitions. [2021-11-19 14:27:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:27:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 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 553 [2021-11-19 14:27:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:27:57,528 INFO L225 Difference]: With dead ends: 7750 [2021-11-19 14:27:57,528 INFO L226 Difference]: Without dead ends: 5993 [2021-11-19 14:27:57,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 1098 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:27:57,534 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 363 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 86 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:27:57,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 915 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 777 Invalid, 4 Unknown, 0 Unchecked, 54.2s Time] [2021-11-19 14:27:57,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2021-11-19 14:27:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 2364. [2021-11-19 14:27:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2363 states have (on average 1.585272958104105) internal successors, (3746), 2363 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3746 transitions. [2021-11-19 14:27:57,745 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3746 transitions. Word has length 553 [2021-11-19 14:27:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:27:57,746 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3746 transitions. [2021-11-19 14:27:57,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:27:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3746 transitions. [2021-11-19 14:27:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-19 14:27:57,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:27:57,760 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 14:27:57,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:27:57,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:27:57,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:27:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:27:57,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1439959711, now seen corresponding path program 1 times [2021-11-19 14:27:57,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:27:57,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954992910] [2021-11-19 14:27:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:27:57,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:27:57,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:27:57,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:27:58,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:28:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:17,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-19 14:28:17,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:10,512 WARN L227 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 66 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:30:10,513 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-19 14:30:10,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 5181 treesize of output 5192 [2021-11-19 14:30:10,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5174 treesize of output 5138 [2021-11-19 14:30:10,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:30:10,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7216 [2021-11-19 14:30:10,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 7640 treesize of output 7260 [2021-11-19 14:30:10,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:30:10,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 5499 treesize of output 5080 [2021-11-19 14:30:10,941 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 5680 treesize of output 5454 [2021-11-19 14:30:10,953 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-19 14:30:10,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:10,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954992910] [2021-11-19 14:30:10,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-19 14:30:10,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2039635935] [2021-11-19 14:30:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:10,974 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:30:10,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:30:10,977 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:30:11,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f9744c-c9ce-4194-9620-fe2288325765/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process