./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:06:36,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:06:36,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:06:36,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:06:36,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:06:36,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:06:36,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:06:36,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:06:36,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:06:36,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:06:36,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:06:36,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:06:36,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:06:36,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:06:36,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:06:36,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:06:36,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:06:36,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:06:36,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:06:36,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:06:36,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:06:36,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:06:36,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:06:36,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:06:36,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:06:36,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:06:36,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:06:36,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:06:36,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:06:36,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:06:36,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:06:36,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:06:36,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:06:36,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:06:36,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:06:36,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:06:36,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:06:36,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:06:36,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:06:36,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:06:36,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:06:36,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:06:36,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:06:36,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:06:36,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:06:36,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:06:36,418 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:06:36,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:06:36,419 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:06:36,419 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:06:36,419 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:06:36,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:06:36,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:06:36,421 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:06:36,421 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:06:36,421 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:06:36,421 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:06:36,422 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:06:36,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:06:36,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:06:36,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:06:36,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:06:36,424 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:06:36,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:06:36,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:06:36,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:06:36,425 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:06:36,425 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:06:36,425 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:06:36,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:06:36,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:06:36,426 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:06:36,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:06:36,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:06:36,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:06:36,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:36,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:06:36,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:06:36,428 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:06:36,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:06:36,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:06:36,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:06:36,428 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_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2021-11-12 23:06:36,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:06:36,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:06:36,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:06:36,747 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:06:36,747 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:06:36,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-12 23:06:36,825 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/c41896f63/8f52b82a21de404098acc06bcc31d626/FLAG3bca60437 [2021-11-12 23:06:37,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:06:37,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-12 23:06:37,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/c41896f63/8f52b82a21de404098acc06bcc31d626/FLAG3bca60437 [2021-11-12 23:06:37,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/c41896f63/8f52b82a21de404098acc06bcc31d626 [2021-11-12 23:06:37,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:06:37,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:06:37,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:37,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:06:37,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:06:37,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:37" (1/1) ... [2021-11-12 23:06:37,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584e3f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:37, skipping insertion in model container [2021-11-12 23:06:37,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:37" (1/1) ... [2021-11-12 23:06:37,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:06:37,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:38,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:38,028 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) [2021-11-12 23:06:38,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c1b197c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:38, skipping insertion in model container [2021-11-12 23:06:38,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:38,030 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:06:38,032 INFO L158 Benchmark]: Toolchain (without parser) took 359.48ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 62.2MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:06:38,033 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:06:38,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.87ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 62.2MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:06:38,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 59.9MB in the beginning and 59.9MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.87ms. Allocated memory is still 90.2MB. Free memory was 54.0MB in the beginning and 62.2MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:06:40,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:06:40,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:06:40,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:06:40,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:06:40,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:06:40,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:06:40,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:06:40,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:06:40,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:06:40,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:06:40,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:06:40,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:06:40,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:06:40,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:06:40,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:06:40,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:06:40,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:06:40,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:06:40,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:06:40,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:06:40,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:06:40,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:06:40,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:06:40,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:06:40,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:06:40,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:06:40,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:06:40,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:06:40,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:06:40,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:06:40,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:06:40,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:06:40,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:06:40,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:06:40,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:06:40,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:06:40,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:06:40,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:06:40,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:06:40,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:06:40,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:06:40,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:06:40,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:06:40,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:06:40,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:06:40,438 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:06:40,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:06:40,438 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:06:40,439 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:06:40,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:06:40,439 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:06:40,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:06:40,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:06:40,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:06:40,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:06:40,441 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:06:40,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:06:40,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:06:40,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:06:40,441 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:06:40,442 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:06:40,442 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:06:40,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:06:40,442 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:06:40,442 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:06:40,442 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:06:40,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:06:40,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:06:40,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:06:40,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:06:40,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:06:40,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:40,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:06:40,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:06:40,444 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:06:40,445 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:06:40,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:06:40,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:06:40,445 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_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2021-11-12 23:06:40,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:06:40,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:06:40,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:06:40,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:06:40,837 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:06:40,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-12 23:06:40,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/88cc12ba1/44d36eb601954c868238140724203316/FLAGf01364165 [2021-11-12 23:06:41,511 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:06:41,512 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-12 23:06:41,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/88cc12ba1/44d36eb601954c868238140724203316/FLAGf01364165 [2021-11-12 23:06:41,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/data/88cc12ba1/44d36eb601954c868238140724203316 [2021-11-12 23:06:41,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:06:41,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:06:41,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:41,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:06:41,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:06:41,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:41" (1/1) ... [2021-11-12 23:06:41,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dd6319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:41, skipping insertion in model container [2021-11-12 23:06:41,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:41" (1/1) ... [2021-11-12 23:06:41,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:06:41,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:42,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:42,374 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:06:42,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:42,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:42,465 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:06:42,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:42,580 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:06:42,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42 WrapperNode [2021-11-12 23:06:42,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:42,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:06:42,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:06:42,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:06:42,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:06:42,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:06:42,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:06:42,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:06:42,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:06:42,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:06:42,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:06:42,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:06:42,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:42,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:06:42,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:06:42,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:06:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:06:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2021-11-12 23:06:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2021-11-12 23:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:06:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:06:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:06:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:06:42,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:06:44,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:06:44,001 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-12 23:06:44,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:06:44 BoogieIcfgContainer [2021-11-12 23:06:44,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:06:44,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:06:44,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:06:44,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:06:44,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:06:41" (1/3) ... [2021-11-12 23:06:44,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d45ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:06:44, skipping insertion in model container [2021-11-12 23:06:44,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42" (2/3) ... [2021-11-12 23:06:44,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d45ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:06:44, skipping insertion in model container [2021-11-12 23:06:44,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:06:44" (3/3) ... [2021-11-12 23:06:44,012 INFO L111 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-2.i [2021-11-12 23:06:44,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:06:44,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-11-12 23:06:44,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:06:44,069 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:06:44,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-11-12 23:06:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:06:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:06:44,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:44,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:06:44,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:06:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash 5052905, now seen corresponding path program 1 times [2021-11-12 23:06:44,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:44,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149155014] [2021-11-12 23:06:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:44,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:44,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:44,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:06:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:44,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:06:44,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:44,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:44,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:44,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149155014] [2021-11-12 23:06:44,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149155014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:44,255 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:44,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:06:44,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708359646] [2021-11-12 23:06:44,257 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:44,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:06:44,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:44,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:06:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:06:44,318 INFO L87 Difference]: Start difference. First operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:44,366 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2021-11-12 23:06:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:06:44,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-11-12 23:06:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:44,376 INFO L225 Difference]: With dead ends: 189 [2021-11-12 23:06:44,377 INFO L226 Difference]: Without dead ends: 187 [2021-11-12 23:06:44,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:06:44,382 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:44,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:06:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-12 23:06:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-12 23:06:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 92 states have (on average 2.108695652173913) internal successors, (194), 183 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:06:44,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2021-11-12 23:06:44,435 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 4 [2021-11-12 23:06:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:44,436 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2021-11-12 23:06:44,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2021-11-12 23:06:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:06:44,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:44,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:06:44,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:44,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:44,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:06:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash 5050693, now seen corresponding path program 1 times [2021-11-12 23:06:44,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:44,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2911650] [2021-11-12 23:06:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:44,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:44,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:44,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:44,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:06:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:44,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:06:44,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:44,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:06:44,859 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 23:06:44,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-12 23:06:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:44,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:44,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:44,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2911650] [2021-11-12 23:06:44,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2911650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:44,974 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:44,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:06:44,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100496964] [2021-11-12 23:06:44,974 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:44,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:06:44,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:44,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:06:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:06:44,991 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:45,699 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2021-11-12 23:06:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:06:45,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-12 23:06:45,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:45,702 INFO L225 Difference]: With dead ends: 207 [2021-11-12 23:06:45,702 INFO L226 Difference]: Without dead ends: 207 [2021-11-12 23:06:45,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:06:45,704 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 149 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 529.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.10ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:45,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 287 Invalid, 195 Unknown, 0 Unchecked, 6.10ms Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 643.56ms Time] [2021-11-12 23:06:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-12 23:06:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2021-11-12 23:06:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 177 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:06:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-11-12 23:06:45,722 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 4 [2021-11-12 23:06:45,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:45,723 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-11-12 23:06:45,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-11-12 23:06:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:06:45,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:45,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:06:45,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:45,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:45,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:06:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 5050694, now seen corresponding path program 1 times [2021-11-12 23:06:45,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:45,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461386523] [2021-11-12 23:06:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:45,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:45,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:45,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:06:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:46,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:06:46,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:46,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:06:46,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:06:46,140 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:06:46,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-12 23:06:46,148 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:06:46,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-12 23:06:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:46,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:48,343 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_append_~node~0#1.base_17| (_ BitVec 32))) (or (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~#list~0#1.offset| (_ bv4 32)))) (and (bvule |c_ULTIMATE.start_main_~#list~0#1.offset| .cse0) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_append_~node~0#1.base_17| (_ bv8 32)) |c_ULTIMATE.start_main_~#list~0#1.base|)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_append_~node~0#1.base_17|)))))) is different from false [2021-11-12 23:06:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:48,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:48,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461386523] [2021-11-12 23:06:48,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461386523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:48,397 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:48,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:06:48,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486171988] [2021-11-12 23:06:48,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:48,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:06:48,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:06:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2021-11-12 23:06:48,400 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:49,666 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2021-11-12 23:06:49,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:06:49,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-12 23:06:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:49,671 INFO L225 Difference]: With dead ends: 183 [2021-11-12 23:06:49,671 INFO L226 Difference]: Without dead ends: 183 [2021-11-12 23:06:49,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=18, Unknown=1, NotChecked=8, Total=42 [2021-11-12 23:06:49,673 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 76 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1033.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 1171.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:49,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 353 Invalid, 415 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [3 Valid, 221 Invalid, 0 Unknown, 191 Unchecked, 1171.91ms Time] [2021-11-12 23:06:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-12 23:06:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-12 23:06:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 94 states have (on average 2.021276595744681) internal successors, (190), 179 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:06:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2021-11-12 23:06:49,708 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 4 [2021-11-12 23:06:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:49,709 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2021-11-12 23:06:49,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2021-11-12 23:06:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:06:49,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:49,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:06:49,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:49,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:49,920 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:06:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash 156571597, now seen corresponding path program 1 times [2021-11-12 23:06:49,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:49,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33260294] [2021-11-12 23:06:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:49,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:49,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:49,924 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:49,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:06:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:50,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:06:50,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:50,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:06:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:50,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:50,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:50,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33260294] [2021-11-12 23:06:50,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33260294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:50,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:50,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:06:50,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800667917] [2021-11-12 23:06:50,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:50,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:06:50,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:50,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:06:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:06:50,049 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:50,486 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2021-11-12 23:06:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:06:50,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 23:06:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:50,487 INFO L225 Difference]: With dead ends: 206 [2021-11-12 23:06:50,487 INFO L226 Difference]: Without dead ends: 206 [2021-11-12 23:06:50,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:06:50,489 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 367.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:50,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 424.41ms Time] [2021-11-12 23:06:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-12 23:06:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 181. [2021-11-12 23:06:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 94 states have (on average 2.0) internal successors, (188), 177 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:06:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-11-12 23:06:50,502 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 5 [2021-11-12 23:06:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:50,502 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-11-12 23:06:50,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-11-12 23:06:50,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:06:50,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:50,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:06:50,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:50,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:50,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:06:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash 156571598, now seen corresponding path program 1 times [2021-11-12 23:06:50,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:50,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589194308] [2021-11-12 23:06:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:50,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:50,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:50,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:50,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:06:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:50,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:06:50,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:50,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:06:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:50,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:50,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:50,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589194308] [2021-11-12 23:06:50,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589194308] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:50,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:50,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:06:50,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970194181] [2021-11-12 23:06:50,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:50,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:06:50,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:50,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:06:50,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:06:50,928 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:51,614 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2021-11-12 23:06:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:06:51,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 23:06:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:51,616 INFO L225 Difference]: With dead ends: 179 [2021-11-12 23:06:51,617 INFO L226 Difference]: Without dead ends: 179 [2021-11-12 23:06:51,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:06:51,618 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 22 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 598.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 675.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:51,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 273 Invalid, 91 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 675.91ms Time] [2021-11-12 23:06:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-12 23:06:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-12 23:06:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 94 states have (on average 1.9787234042553192) internal successors, (186), 175 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:06:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2021-11-12 23:06:51,628 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 5 [2021-11-12 23:06:51,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:51,629 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2021-11-12 23:06:51,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2021-11-12 23:06:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:06:51,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:51,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:51,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:51,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:51,841 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:06:51,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:51,841 INFO L85 PathProgramCache]: Analyzing trace with hash 141453103, now seen corresponding path program 1 times [2021-11-12 23:06:51,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:51,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178709731] [2021-11-12 23:06:51,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:51,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:51,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:51,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:51,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:06:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:51,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:06:51,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:51,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:52,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 23:06:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:52,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:52,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178709731] [2021-11-12 23:06:52,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178709731] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:52,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:52,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:06:52,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785456506] [2021-11-12 23:06:52,151 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:52,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:06:52,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:06:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:06:52,152 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:52,393 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2021-11-12 23:06:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:06:52,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 23:06:52,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:52,395 INFO L225 Difference]: With dead ends: 178 [2021-11-12 23:06:52,395 INFO L226 Difference]: Without dead ends: 178 [2021-11-12 23:06:52,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:06:52,396 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 254 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 186.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:52,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 535 Invalid, 66 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 186.03ms Time] [2021-11-12 23:06:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-12 23:06:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-12 23:06:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 94 states have (on average 1.9680851063829787) internal successors, (185), 174 states have internal predecessors, (185), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:06:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2021-11-12 23:06:52,406 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 7 [2021-11-12 23:06:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:52,407 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2021-11-12 23:06:52,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2021-11-12 23:06:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:06:52,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:52,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:52,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:52,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:52,615 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:06:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash 666573431, now seen corresponding path program 1 times [2021-11-12 23:06:52,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:52,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432603486] [2021-11-12 23:06:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:52,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:52,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:52,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:52,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:06:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:06:52,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:52,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:06:52,792 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 23:06:52,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-12 23:06:52,897 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-12 23:06:52,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-11-12 23:06:52,926 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-12 23:06:52,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-12 23:06:52,985 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 29 treesize of output 21 [2021-11-12 23:06:52,990 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 18 treesize of output 10 [2021-11-12 23:06:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:53,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:03,482 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:07:05,583 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_append_~node~0#1.base_21| (_ BitVec 32))) (or (and (forall ((|ULTIMATE.start_append_~node~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_append_#t~mem27#1.base| (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_append_~node~0#1.base_21| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_append_~node~0#1.base_21|) (bvadd (_ bv4 32) |ULTIMATE.start_append_~node~0#1.offset|) |ULTIMATE.start_append_#t~mem27#1.base|)) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) (_ bv0 32))) (forall ((|ULTIMATE.start_append_~node~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_append_#t~mem27#1.offset| (_ BitVec 32))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_append_~node~0#1.base_21| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_append_~node~0#1.base_21|) (bvadd (_ bv4 32) |ULTIMATE.start_append_~node~0#1.offset|) |ULTIMATE.start_append_#t~mem27#1.offset|)) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_append_~node~0#1.base_21|))))) is different from false [2021-11-12 23:07:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:05,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:05,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432603486] [2021-11-12 23:07:05,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432603486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:05,615 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:05,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 23:07:05,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619314227] [2021-11-12 23:07:05,615 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:05,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:07:05,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:07:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=27, Unknown=3, NotChecked=10, Total=56 [2021-11-12 23:07:05,617 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:07,630 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_append_~node~0#1.base_21| (_ BitVec 32))) (or (and (forall ((|ULTIMATE.start_append_~node~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_append_#t~mem27#1.base| (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_append_~node~0#1.base_21| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_append_~node~0#1.base_21|) (bvadd (_ bv4 32) |ULTIMATE.start_append_~node~0#1.offset|) |ULTIMATE.start_append_#t~mem27#1.base|)) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) (_ bv0 32))) (forall ((|ULTIMATE.start_append_~node~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_append_#t~mem27#1.offset| (_ BitVec 32))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_append_~node~0#1.base_21| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_append_~node~0#1.base_21|) (bvadd (_ bv4 32) |ULTIMATE.start_append_~node~0#1.offset|) |ULTIMATE.start_append_#t~mem27#1.offset|)) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_append_~node~0#1.base_21|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~#list~0#1.base|))) (_ bv1 1))) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) (_ bv0 32))) is different from false [2021-11-12 23:07:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:08,246 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2021-11-12 23:07:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:07:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 23:07:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:08,250 INFO L225 Difference]: With dead ends: 183 [2021-11-12 23:07:08,250 INFO L226 Difference]: Without dead ends: 183 [2021-11-12 23:07:08,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=24, Invalid=36, Unknown=4, NotChecked=26, Total=90 [2021-11-12 23:07:08,251 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 4 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 487.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 578.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:08,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 694 Invalid, 243 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 96 Unchecked, 578.95ms Time] [2021-11-12 23:07:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-12 23:07:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-11-12 23:07:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 98 states have (on average 1.9285714285714286) internal successors, (189), 178 states have internal predecessors, (189), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2021-11-12 23:07:08,261 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 10 [2021-11-12 23:07:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:08,261 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2021-11-12 23:07:08,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2021-11-12 23:07:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:07:08,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:08,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:08,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:08,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,474 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 623653565, now seen corresponding path program 1 times [2021-11-12 23:07:08,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:08,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390020206] [2021-11-12 23:07:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:08,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:08,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:08,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:07:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:08,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:07:08,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:08,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:08,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:08,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390020206] [2021-11-12 23:07:08,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390020206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:08,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:08,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:07:08,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706925596] [2021-11-12 23:07:08,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:08,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:07:08,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:07:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:07:08,648 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:08,701 INFO L93 Difference]: Finished difference Result 259 states and 274 transitions. [2021-11-12 23:07:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:07:08,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 23:07:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:08,703 INFO L225 Difference]: With dead ends: 259 [2021-11-12 23:07:08,703 INFO L226 Difference]: Without dead ends: 259 [2021-11-12 23:07:08,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:07:08,704 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 80 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:08,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 545 Invalid, 18 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 31.73ms Time] [2021-11-12 23:07:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-12 23:07:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 223. [2021-11-12 23:07:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 138 states have (on average 1.9565217391304348) internal successors, (270), 218 states have internal predecessors, (270), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 274 transitions. [2021-11-12 23:07:08,713 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 274 transitions. Word has length 12 [2021-11-12 23:07:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:08,713 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 274 transitions. [2021-11-12 23:07:08,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 274 transitions. [2021-11-12 23:07:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:07:08,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:08,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:08,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:08,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569776, now seen corresponding path program 1 times [2021-11-12 23:07:08,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:08,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825719666] [2021-11-12 23:07:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:08,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:08,933 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:08,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:07:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:08,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:07:08,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:09,043 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 23:07:09,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-12 23:07:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:09,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:09,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:09,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825719666] [2021-11-12 23:07:09,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825719666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:09,109 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:09,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:07:09,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896620130] [2021-11-12 23:07:09,110 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:09,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:07:09,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:07:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:07:09,112 INFO L87 Difference]: Start difference. First operand 223 states and 274 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:09,560 INFO L93 Difference]: Finished difference Result 226 states and 270 transitions. [2021-11-12 23:07:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:07:09,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:07:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:09,562 INFO L225 Difference]: With dead ends: 226 [2021-11-12 23:07:09,562 INFO L226 Difference]: Without dead ends: 226 [2021-11-12 23:07:09,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:07:09,563 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 371.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 435.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:09,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 200 Invalid, 110 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 435.91ms Time] [2021-11-12 23:07:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-12 23:07:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 217. [2021-11-12 23:07:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 144 states have (on average 1.8055555555555556) internal successors, (260), 212 states have internal predecessors, (260), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 264 transitions. [2021-11-12 23:07:09,572 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 264 transitions. Word has length 13 [2021-11-12 23:07:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:09,572 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 264 transitions. [2021-11-12 23:07:09,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 264 transitions. [2021-11-12 23:07:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:07:09,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:09,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:09,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:09,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:09,784 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:09,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569775, now seen corresponding path program 1 times [2021-11-12 23:07:09,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:09,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367856317] [2021-11-12 23:07:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:09,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:09,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:09,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:09,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:07:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:09,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:07:09,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:09,917 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:07:09,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-12 23:07:09,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-12 23:07:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:09,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:10,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:10,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367856317] [2021-11-12 23:07:10,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367856317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:10,039 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:10,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:07:10,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423222834] [2021-11-12 23:07:10,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:10,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:07:10,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:07:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:07:10,040 INFO L87 Difference]: Start difference. First operand 217 states and 264 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:10,045 INFO L93 Difference]: Finished difference Result 216 states and 262 transitions. [2021-11-12 23:07:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:07:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:07:10,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:10,047 INFO L225 Difference]: With dead ends: 216 [2021-11-12 23:07:10,048 INFO L226 Difference]: Without dead ends: 216 [2021-11-12 23:07:10,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:07:10,049 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:10,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 85 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 85 Unchecked, 0.12ms Time] [2021-11-12 23:07:10,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-12 23:07:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-12 23:07:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 144 states have (on average 1.7916666666666667) internal successors, (258), 211 states have internal predecessors, (258), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 262 transitions. [2021-11-12 23:07:10,058 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 262 transitions. Word has length 13 [2021-11-12 23:07:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:10,058 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 262 transitions. [2021-11-12 23:07:10,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 262 transitions. [2021-11-12 23:07:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:07:10,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:10,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:10,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:10,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:10,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr11REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2060989768, now seen corresponding path program 1 times [2021-11-12 23:07:10,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:10,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273075702] [2021-11-12 23:07:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:10,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:10,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:10,273 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:10,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:07:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:10,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:07:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:10,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:10,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:10,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273075702] [2021-11-12 23:07:10,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273075702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:10,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:10,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:07:10,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73482879] [2021-11-12 23:07:10,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:10,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:07:10,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:07:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:07:10,432 INFO L87 Difference]: Start difference. First operand 216 states and 262 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:10,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:10,493 INFO L93 Difference]: Finished difference Result 231 states and 280 transitions. [2021-11-12 23:07:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:07:10,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:07:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:10,496 INFO L225 Difference]: With dead ends: 231 [2021-11-12 23:07:10,496 INFO L226 Difference]: Without dead ends: 231 [2021-11-12 23:07:10,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:07:10,497 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 21 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:10,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 338 Invalid, 12 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 56.31ms Time] [2021-11-12 23:07:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-12 23:07:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2021-11-12 23:07:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 156 states have (on average 1.7692307692307692) internal successors, (276), 223 states have internal predecessors, (276), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 280 transitions. [2021-11-12 23:07:10,506 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 280 transitions. Word has length 16 [2021-11-12 23:07:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:10,506 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 280 transitions. [2021-11-12 23:07:10,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 280 transitions. [2021-11-12 23:07:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:07:10,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:10,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:10,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:10,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:10,715 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2060989718, now seen corresponding path program 1 times [2021-11-12 23:07:10,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:10,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850681434] [2021-11-12 23:07:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:10,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:10,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:10,716 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:10,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:07:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:10,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:07:10,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:10,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:10,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 23:07:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:11,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:11,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850681434] [2021-11-12 23:07:11,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850681434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:11,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:11,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:07:11,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525148100] [2021-11-12 23:07:11,020 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:11,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:07:11,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:07:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:07:11,021 INFO L87 Difference]: Start difference. First operand 228 states and 280 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:11,801 INFO L93 Difference]: Finished difference Result 254 states and 302 transitions. [2021-11-12 23:07:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:07:11,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:07:11,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:11,804 INFO L225 Difference]: With dead ends: 254 [2021-11-12 23:07:11,804 INFO L226 Difference]: Without dead ends: 254 [2021-11-12 23:07:11,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:07:11,805 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 153 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 679.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 766.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:11,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 463 Invalid, 129 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 766.27ms Time] [2021-11-12 23:07:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-12 23:07:11,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 228. [2021-11-12 23:07:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 162 states have (on average 1.6666666666666667) internal successors, (270), 223 states have internal predecessors, (270), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 274 transitions. [2021-11-12 23:07:11,815 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 274 transitions. Word has length 16 [2021-11-12 23:07:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:11,815 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 274 transitions. [2021-11-12 23:07:11,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 274 transitions. [2021-11-12 23:07:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:07:11,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:11,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:11,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-12 23:07:12,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:12,027 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash 533828155, now seen corresponding path program 1 times [2021-11-12 23:07:12,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:12,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321734261] [2021-11-12 23:07:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:12,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:12,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:12,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:12,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:07:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:12,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:07:12,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:12,141 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 23:07:12,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-12 23:07:12,171 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 24 treesize of output 20 [2021-11-12 23:07:12,236 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 35 treesize of output 23 [2021-11-12 23:07:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:12,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:12,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:12,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321734261] [2021-11-12 23:07:12,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321734261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:12,362 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:12,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:07:12,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297951052] [2021-11-12 23:07:12,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:12,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:07:12,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:12,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:07:12,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:07:12,364 INFO L87 Difference]: Start difference. First operand 228 states and 274 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:13,499 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2021-11-12 23:07:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:07:13,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-12 23:07:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:13,501 INFO L225 Difference]: With dead ends: 229 [2021-11-12 23:07:13,501 INFO L226 Difference]: Without dead ends: 229 [2021-11-12 23:07:13,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:07:13,502 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 937.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.23ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1072.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:13,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 597 Invalid, 404 Unknown, 0 Unchecked, 3.23ms Time], IncrementalHoareTripleChecker [2 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 1072.26ms Time] [2021-11-12 23:07:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-12 23:07:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-11-12 23:07:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 162 states have (on average 1.654320987654321) internal successors, (268), 223 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2021-11-12 23:07:13,511 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 17 [2021-11-12 23:07:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:13,511 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2021-11-12 23:07:13,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2021-11-12 23:07:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:07:13,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:13,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:13,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:13,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:13,723 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash 533828156, now seen corresponding path program 1 times [2021-11-12 23:07:13,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:13,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711424669] [2021-11-12 23:07:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:13,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:13,725 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:13,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:07:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:13,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:07:13,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:13,860 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-12 23:07:13,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-12 23:07:13,916 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 28 treesize of output 24 [2021-11-12 23:07:13,937 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 [2021-11-12 23:07:14,116 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 54 treesize of output 36 [2021-11-12 23:07:14,122 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 33 treesize of output 21 [2021-11-12 23:07:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:14,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:07:14,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:14,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711424669] [2021-11-12 23:07:14,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711424669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:14,698 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:14,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-12 23:07:14,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815871460] [2021-11-12 23:07:14,699 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:14,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:07:14,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:14,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:07:14,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:07:14,700 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:17,076 INFO L93 Difference]: Finished difference Result 228 states and 270 transitions. [2021-11-12 23:07:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:07:17,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-12 23:07:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:17,079 INFO L225 Difference]: With dead ends: 228 [2021-11-12 23:07:17,079 INFO L226 Difference]: Without dead ends: 228 [2021-11-12 23:07:17,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:07:17,081 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 10 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2051.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2256.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:17,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 509 Invalid, 329 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [3 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 2256.12ms Time] [2021-11-12 23:07:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-12 23:07:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-11-12 23:07:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 162 states have (on average 1.6419753086419753) internal successors, (266), 223 states have internal predecessors, (266), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:07:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2021-11-12 23:07:17,089 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 17 [2021-11-12 23:07:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:17,090 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2021-11-12 23:07:17,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:07:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2021-11-12 23:07:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 23:07:17,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:17,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:17,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:17,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:17,299 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-12 23:07:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049946, now seen corresponding path program 1 times [2021-11-12 23:07:17,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:17,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369109388] [2021-11-12 23:07:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:17,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:17,302 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:17,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:07:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:17,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:07:17,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:17,493 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 23:07:17,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-11-12 23:07:17,538 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 28 treesize of output 24 [2021-11-12 23:07:17,770 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-12 23:07:17,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 48 [2021-11-12 23:07:17,853 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 45 treesize of output 27 [2021-11-12 23:07:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:07:17,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:17,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:07:17,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-12 23:07:22,193 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (create_data_~counter~0 (_ BitVec 32)) (|create_data_#t~mem11.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse0 (let ((.cse1 (bvmul create_data_~counter~0 (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |create_data_#t~mem11.offset| .cse1) v_DerPreprocessor_1) (bvadd |create_data_#t~mem11.offset| .cse1 (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) |create_data_#t~mem11.offset| .cse1) v_DerPreprocessor_3) (bvadd (_ bv3 32) |create_data_#t~mem11.offset| .cse1) v_DerPreprocessor_4)))) c_create_data_~data~0.base) .cse2)))))) (_ bv1 1)))) is different from false [2021-11-12 23:19:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-12 23:19:57,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:57,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369109388] [2021-11-12 23:19:57,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369109388] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:19:57,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1471369132] [2021-11-12 23:19:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:57,233 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:19:57,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:19:57,238 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:19:57,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2941d2a1-ab5b-462c-9711-82296e08c1fb/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:19:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:57,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:19:57,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:57,473 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 23:19:57,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-12 23:19:57,495 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 28 treesize of output 24 [2021-11-12 23:19:57,679 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-12 23:19:57,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 51 [2021-11-12 23:19:57,746 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 45 treesize of output 27 [2021-11-12 23:19:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:19:57,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:57,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:19:57,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-12 23:20:06,640 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (create_data_~counter~0 (_ BitVec 32)) (|create_data_#t~mem11.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse0 (let ((.cse1 (bvmul create_data_~counter~0 (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |create_data_#t~mem11.offset| .cse1) v_DerPreprocessor_5) (bvadd |create_data_#t~mem11.offset| .cse1 (_ bv1 32)) v_DerPreprocessor_6) (bvadd (_ bv2 32) |create_data_#t~mem11.offset| .cse1) v_DerPreprocessor_7) (bvadd (_ bv3 32) |create_data_#t~mem11.offset| .cse1) v_DerPreprocessor_8)))) c_create_data_~data~0.base) .cse2))))))))) (_ bv1 1)))) is different from false