./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:49:34,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:34,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:34,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:34,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:34,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:34,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:34,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:34,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:34,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:34,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:34,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:34,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:34,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:34,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:34,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:34,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:34,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:34,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:34,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:34,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:34,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:34,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:34,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:34,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:34,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:34,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:34,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:34,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:34,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:34,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:34,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:34,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:34,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:34,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:34,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:34,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:34,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:34,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:34,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:34,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:34,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:49:34,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:34,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:34,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:34,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:34,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:49:34,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:49:34,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:34,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:34,436 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:34,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:34,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:34,437 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:49:34,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:34,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:34,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:34,438 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:49:34,438 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:49:34,438 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:49:34,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:49:34,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:49:34,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:34,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:34,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:34,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:34,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:49:34,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:34,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:34,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:49:34,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:49:34,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:49:34,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2022-11-20 10:49:34,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:34,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:34,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:34,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:34,773 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:34,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-11-20 10:49:37,769 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:49:38,069 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:49:38,069 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-11-20 10:49:38,084 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data/fe1690d0c/1c70325f86df482e93b5e0fd4755c931/FLAG01661912a [2022-11-20 10:49:38,104 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data/fe1690d0c/1c70325f86df482e93b5e0fd4755c931 [2022-11-20 10:49:38,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:49:38,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:49:38,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:38,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:49:38,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:49:38,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:38" (1/1) ... [2022-11-20 10:49:38,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320ef658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:38, skipping insertion in model container [2022-11-20 10:49:38,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:38" (1/1) ... [2022-11-20 10:49:38,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:49:38,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:38,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:38,708 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-20 10:49:38,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d453b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:38, skipping insertion in model container [2022-11-20 10:49:38,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:38,709 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 10:49:38,711 INFO L158 Benchmark]: Toolchain (without parser) took 598.89ms. Allocated memory is still 163.6MB. Free memory was 131.9MB in the beginning and 129.1MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 10:49:38,712 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:49:38,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.83ms. Allocated memory is still 163.6MB. Free memory was 131.9MB in the beginning and 129.1MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 10:49:38,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.83ms. Allocated memory is still 163.6MB. Free memory was 131.9MB in the beginning and 129.1MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:49:41,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:41,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:41,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:41,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:41,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:41,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:41,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:41,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:41,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:41,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:41,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:41,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:41,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:41,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:41,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:41,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:41,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:41,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:41,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:41,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:41,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:41,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:41,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:41,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:41,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:41,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:41,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:41,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:41,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:41,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:41,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:41,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:41,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:41,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:41,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:41,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:41,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:41,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:41,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:41,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:41,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 10:49:41,384 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:41,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:41,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:41,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:41,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:49:41,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:49:41,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:41,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:41,388 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:41,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:41,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:41,389 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:49:41,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:41,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:41,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:41,390 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:49:41,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:49:41,391 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:49:41,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:49:41,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:49:41,391 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:49:41,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:49:41,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:41,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:41,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:41,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:41,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:49:41,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:41,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:41,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:49:41,394 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:49:41,394 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:49:41,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:49:41,394 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_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2022-11-20 10:49:41,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:41,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:41,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:41,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:41,871 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:41,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-11-20 10:49:44,987 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:49:45,369 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:49:45,369 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-11-20 10:49:45,398 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data/8b699d623/b5d232e3e5fb4d99a2bb7ff386ac6be0/FLAG66a7db373 [2022-11-20 10:49:45,417 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/data/8b699d623/b5d232e3e5fb4d99a2bb7ff386ac6be0 [2022-11-20 10:49:45,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:49:45,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:49:45,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:45,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:49:45,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:49:45,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:45" (1/1) ... [2022-11-20 10:49:45,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be08ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:45, skipping insertion in model container [2022-11-20 10:49:45,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:45" (1/1) ... [2022-11-20 10:49:45,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:49:45,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:46,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:46,054 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:49:46,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:46,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:46,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:49:46,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:46,328 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:49:46,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46 WrapperNode [2022-11-20 10:49:46,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:46,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:46,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:49:46,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:49:46,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,414 INFO L138 Inliner]: procedures = 167, calls = 79, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 88 [2022-11-20 10:49:46,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:46,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:49:46,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:49:46,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:49:46,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:49:46,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:49:46,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:49:46,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:49:46,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (1/1) ... [2022-11-20 10:49:46,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:46,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:46,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:46,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:49:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:49:46,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:49:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:49:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:49:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:49:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:49:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:49:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:49:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:49:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:49:46,727 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:49:46,729 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:49:47,119 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:49:47,126 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:49:47,126 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:49:47,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:47 BoogieIcfgContainer [2022-11-20 10:49:47,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:49:47,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:49:47,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:49:47,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:49:47,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:49:45" (1/3) ... [2022-11-20 10:49:47,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a547f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:47, skipping insertion in model container [2022-11-20 10:49:47,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:46" (2/3) ... [2022-11-20 10:49:47,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a547f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:47, skipping insertion in model container [2022-11-20 10:49:47,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:47" (3/3) ... [2022-11-20 10:49:47,137 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-2.i [2022-11-20 10:49:47,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:49:47,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-20 10:49:47,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:49:47,207 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f214219, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:49:47,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-20 10:49:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.775) internal successors, (71), 60 states have internal predecessors, (71), 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) [2022-11-20 10:49:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:49:47,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:47,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:47,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:47,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2113718075, now seen corresponding path program 1 times [2022-11-20 10:49:47,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:47,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274306400] [2022-11-20 10:49:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:47,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:47,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 10:49:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:47,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:49:47,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:47,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:47,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:47,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274306400] [2022-11-20 10:49:47,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274306400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:47,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:47,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:49:47,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174686539] [2022-11-20 10:49:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:47,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:47,554 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.775) internal successors, (71), 60 states have internal predecessors, (71), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:47,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:47,696 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2022-11-20 10:49:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:47,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 10:49:47,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:47,707 INFO L225 Difference]: With dead ends: 122 [2022-11-20 10:49:47,707 INFO L226 Difference]: Without dead ends: 118 [2022-11-20 10:49:47,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:47,712 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 59 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:47,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 247 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-20 10:49:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 66. [2022-11-20 10:49:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.619047619047619) internal successors, (68), 61 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:49:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-11-20 10:49:47,760 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 11 [2022-11-20 10:49:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:47,761 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-11-20 10:49:47,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-11-20 10:49:47,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:49:47,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:47,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:47,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:47,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:47,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:47,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2113616981, now seen corresponding path program 1 times [2022-11-20 10:49:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:47,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270022657] [2022-11-20 10:49:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:47,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:47,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:47,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 10:49:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:48,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:48,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:48,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 10:49:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:48,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:48,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:48,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270022657] [2022-11-20 10:49:48,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270022657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:48,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:48,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233002174] [2022-11-20 10:49:48,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:48,150 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:48,336 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2022-11-20 10:49:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:48,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 10:49:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:48,338 INFO L225 Difference]: With dead ends: 90 [2022-11-20 10:49:48,338 INFO L226 Difference]: Without dead ends: 90 [2022-11-20 10:49:48,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:48,340 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 172 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:49:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-20 10:49:48,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2022-11-20 10:49:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 72 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:49:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2022-11-20 10:49:48,348 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 11 [2022-11-20 10:49:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:48,349 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2022-11-20 10:49:48,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2022-11-20 10:49:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:49:48,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:48,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:48,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:48,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:48,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2113616982, now seen corresponding path program 1 times [2022-11-20 10:49:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:48,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814753712] [2022-11-20 10:49:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:48,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:48,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:48,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:48,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 10:49:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:48,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:49:48,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:48,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:49:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:48,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:48,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:48,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814753712] [2022-11-20 10:49:48,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814753712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:48,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:48,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669857661] [2022-11-20 10:49:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:48,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:49:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:49:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:48,806 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:49,235 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2022-11-20 10:49:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:49:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 10:49:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:49,237 INFO L225 Difference]: With dead ends: 114 [2022-11-20 10:49:49,237 INFO L226 Difference]: Without dead ends: 114 [2022-11-20 10:49:49,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:49:49,239 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 102 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:49,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 365 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:49:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-20 10:49:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2022-11-20 10:49:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 1.5753424657534247) internal successors, (115), 92 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:49:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2022-11-20 10:49:49,258 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 11 [2022-11-20 10:49:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:49,258 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2022-11-20 10:49:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2022-11-20 10:49:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:49:49,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:49,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:49,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:49,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:49,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1293745540, now seen corresponding path program 1 times [2022-11-20 10:49:49,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:49,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076207990] [2022-11-20 10:49:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:49,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:49,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:49,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:49,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 10:49:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:49:49,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:49,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:49,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:49,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076207990] [2022-11-20 10:49:49,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076207990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:49,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:49,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905715453] [2022-11-20 10:49:49,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:49,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:49,574 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:49,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:49,699 INFO L93 Difference]: Finished difference Result 141 states and 170 transitions. [2022-11-20 10:49:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:49:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 10:49:49,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:49,701 INFO L225 Difference]: With dead ends: 141 [2022-11-20 10:49:49,701 INFO L226 Difference]: Without dead ends: 139 [2022-11-20 10:49:49,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:49,702 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 47 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:49,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 192 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-20 10:49:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2022-11-20 10:49:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 92 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:49:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2022-11-20 10:49:49,717 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 11 [2022-11-20 10:49:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:49,717 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2022-11-20 10:49:49,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:49,717 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2022-11-20 10:49:49,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:49:49,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:49,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:49,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:49,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:49,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1293846634, now seen corresponding path program 1 times [2022-11-20 10:49:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:49,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155482008] [2022-11-20 10:49:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:49,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:49,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:49,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:49,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 10:49:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:49:49,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:50,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:50,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:50,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155482008] [2022-11-20 10:49:50,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155482008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:50,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:50,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:49:50,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869976527] [2022-11-20 10:49:50,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:50,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:50,079 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:50,120 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2022-11-20 10:49:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 10:49:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:50,122 INFO L225 Difference]: With dead ends: 83 [2022-11-20 10:49:50,122 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 10:49:50,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:50,124 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:50,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:49:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 10:49:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-20 10:49:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 77 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:49:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2022-11-20 10:49:50,131 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 11 [2022-11-20 10:49:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:50,131 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2022-11-20 10:49:50,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:49:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2022-11-20 10:49:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:49:50,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:50,132 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:50,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:50,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1752049815, now seen corresponding path program 1 times [2022-11-20 10:49:50,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:50,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719091679] [2022-11-20 10:49:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:50,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:50,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:50,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:50,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:49:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:50,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:49:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:50,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:49:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:50,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:51,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719091679] [2022-11-20 10:49:51,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719091679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:51,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:51,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 10:49:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000030587] [2022-11-20 10:49:51,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:51,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:49:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:49:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:49:51,517 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:49:52,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:52,705 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2022-11-20 10:49:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:49:52,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2022-11-20 10:49:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:52,707 INFO L225 Difference]: With dead ends: 163 [2022-11-20 10:49:52,707 INFO L226 Difference]: Without dead ends: 163 [2022-11-20 10:49:52,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:49:52,708 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 471 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:52,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 409 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 257 Invalid, 0 Unknown, 113 Unchecked, 0.8s Time] [2022-11-20 10:49:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-20 10:49:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 90. [2022-11-20 10:49:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 86 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:49:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2022-11-20 10:49:52,716 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 14 [2022-11-20 10:49:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:52,716 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2022-11-20 10:49:52,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:49:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2022-11-20 10:49:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:49:52,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:52,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:52,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:52,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:52,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:52,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1183774854, now seen corresponding path program 1 times [2022-11-20 10:49:52,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:52,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478501392] [2022-11-20 10:49:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:52,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:52,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:52,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 10:49:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:53,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:53,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:53,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:53,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478501392] [2022-11-20 10:49:53,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478501392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:53,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:53,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 10:49:53,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136820094] [2022-11-20 10:49:53,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:53,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:49:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:53,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:49:53,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:49:53,228 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-11-20 10:49:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:53,463 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2022-11-20 10:49:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:49:53,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) Word has length 22 [2022-11-20 10:49:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:53,465 INFO L225 Difference]: With dead ends: 96 [2022-11-20 10:49:53,465 INFO L226 Difference]: Without dead ends: 96 [2022-11-20 10:49:53,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:49:53,466 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 86 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:53,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 402 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:49:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-20 10:49:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2022-11-20 10:49:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 91 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:49:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2022-11-20 10:49:53,472 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 22 [2022-11-20 10:49:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:53,472 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2022-11-20 10:49:53,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-11-20 10:49:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2022-11-20 10:49:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 10:49:53,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:53,473 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:53,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:53,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:53,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:49:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:53,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1595807082, now seen corresponding path program 2 times [2022-11-20 10:49:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:49:53,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345972738] [2022-11-20 10:49:53,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:49:53,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:49:53,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:49:53,688 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:49:53,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 10:49:53,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:49:53,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:53,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:49:53,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:53,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:49:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:54,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:56,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:49:56,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345972738] [2022-11-20 10:49:56,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345972738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:56,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:56,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 10:49:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823067923] [2022-11-20 10:49:56,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:49:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:49:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:49:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:49:56,329 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,295 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2022-11-20 10:50:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:50:00,295 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-20 10:50:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:00,297 INFO L225 Difference]: With dead ends: 121 [2022-11-20 10:50:00,297 INFO L226 Difference]: Without dead ends: 121 [2022-11-20 10:50:00,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 10:50:00,298 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 513 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:00,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 558 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 449 Invalid, 0 Unknown, 83 Unchecked, 1.6s Time] [2022-11-20 10:50:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-20 10:50:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 108. [2022-11-20 10:50:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 104 states have internal predecessors, (122), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2022-11-20 10:50:00,304 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 23 [2022-11-20 10:50:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:00,305 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2022-11-20 10:50:00,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2022-11-20 10:50:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 10:50:00,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:00,306 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:00,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,519 INFO L85 PathProgramCache]: Analyzing trace with hash 582541894, now seen corresponding path program 2 times [2022-11-20 10:50:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:00,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352196088] [2022-11-20 10:50:00,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:00,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:00,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:00,521 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 10:50:00,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:50:00,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:00,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:50:00,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 10:50:00,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:00,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:00,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352196088] [2022-11-20 10:50:00,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352196088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:00,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:00,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:00,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197932605] [2022-11-20 10:50:00,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:00,671 INFO L87 Difference]: Start difference. First operand 108 states and 127 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:50:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,735 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2022-11-20 10:50:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:00,736 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-20 10:50:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:00,738 INFO L225 Difference]: With dead ends: 138 [2022-11-20 10:50:00,738 INFO L226 Difference]: Without dead ends: 138 [2022-11-20 10:50:00,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:00,739 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 144 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:00,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 121 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:00,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-20 10:50:00,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 93. [2022-11-20 10:50:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.4) internal successors, (98), 89 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2022-11-20 10:50:00,744 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 34 [2022-11-20 10:50:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:00,745 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2022-11-20 10:50:00,745 INFO L496 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), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:50:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2022-11-20 10:50:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 10:50:00,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:00,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:00,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:00,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash 324400124, now seen corresponding path program 1 times [2022-11-20 10:50:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:00,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483507939] [2022-11-20 10:50:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:00,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:00,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 10:50:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:01,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:50:01,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:01,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:50:01,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:01,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483507939] [2022-11-20 10:50:01,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483507939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:01,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:01,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 10:50:01,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989216014] [2022-11-20 10:50:01,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:01,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:50:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:50:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:50:01,645 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:50:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:02,083 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-11-20 10:50:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:50:02,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-11-20 10:50:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:02,085 INFO L225 Difference]: With dead ends: 93 [2022-11-20 10:50:02,085 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 10:50:02,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:50:02,086 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 189 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:02,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 451 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:50:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 10:50:02,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-20 10:50:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 89 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-11-20 10:50:02,091 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 38 [2022-11-20 10:50:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:02,091 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-11-20 10:50:02,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:50:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-11-20 10:50:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 10:50:02,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:02,092 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:02,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:02,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:02,305 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1755014154, now seen corresponding path program 3 times [2022-11-20 10:50:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:02,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142829190] [2022-11-20 10:50:02,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:50:02,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:02,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:02,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:02,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 10:50:02,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 10:50:02,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:02,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 10:50:02,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:02,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:50:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:03,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:09,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142829190] [2022-11-20 10:50:09,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142829190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:09,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:09,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2022-11-20 10:50:09,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322208854] [2022-11-20 10:50:09,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:09,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 10:50:09,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 10:50:09,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 10:50:09,866 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:15,084 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2022-11-20 10:50:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:50:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-20 10:50:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:15,086 INFO L225 Difference]: With dead ends: 139 [2022-11-20 10:50:15,086 INFO L226 Difference]: Without dead ends: 139 [2022-11-20 10:50:15,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=316, Invalid=1090, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 10:50:15,087 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 832 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:15,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 912 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 971 Invalid, 0 Unknown, 127 Unchecked, 3.7s Time] [2022-11-20 10:50:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-20 10:50:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 91. [2022-11-20 10:50:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.318840579710145) internal successors, (91), 87 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2022-11-20 10:50:15,092 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 41 [2022-11-20 10:50:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:15,093 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2022-11-20 10:50:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2022-11-20 10:50:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 10:50:15,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:15,095 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:15,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:15,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:15,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1745592900, now seen corresponding path program 2 times [2022-11-20 10:50:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:15,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396863275] [2022-11-20 10:50:15,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:15,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:15,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:15,311 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:15,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 10:50:15,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:15,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:15,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 10:50:15,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:15,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 10:50:15,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:50:15,992 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_269 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_269))))) is different from true [2022-11-20 10:50:16,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:16,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 10:50:16,050 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 10:50:16,050 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 10:50:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-20 10:50:16,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:18,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396863275] [2022-11-20 10:50:18,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396863275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2135594659] [2022-11-20 10:50:18,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:18,614 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 10:50:18,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 10:50:18,615 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 10:50:18,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-20 10:50:19,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:19,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:19,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 10:50:19,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:19,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:50:19,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 10:50:19,503 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_339 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_339) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-20 10:50:19,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:50:19,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 10:50:19,541 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 10:50:19,542 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 10:50:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-20 10:50:19,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2135594659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:21,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:21,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-11-20 10:50:21,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040376157] [2022-11-20 10:50:21,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:21,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:50:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:50:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=109, Unknown=2, NotChecked=42, Total=182 [2022-11-20 10:50:21,856 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:22,937 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2022-11-20 10:50:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:50:22,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-20 10:50:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:22,940 INFO L225 Difference]: With dead ends: 225 [2022-11-20 10:50:22,941 INFO L226 Difference]: Without dead ends: 225 [2022-11-20 10:50:22,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=44, Invalid=172, Unknown=2, NotChecked=54, Total=272 [2022-11-20 10:50:22,941 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 141 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:22,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 571 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 502 Invalid, 0 Unknown, 238 Unchecked, 0.9s Time] [2022-11-20 10:50:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-20 10:50:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 126. [2022-11-20 10:50:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.4215686274509804) internal successors, (145), 119 states have internal predecessors, (145), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2022-11-20 10:50:22,948 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 50 [2022-11-20 10:50:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:22,950 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2022-11-20 10:50:22,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2022-11-20 10:50:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 10:50:22,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:22,956 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:22,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:23,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:23,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 10:50:23,364 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:23,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1745592901, now seen corresponding path program 1 times [2022-11-20 10:50:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:23,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188203617] [2022-11-20 10:50:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:23,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:23,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:23,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:23,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 10:50:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:23,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:50:23,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:23,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 10:50:23,663 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-20 10:50:23,683 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 10:50:23,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 10:50:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-20 10:50:23,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:50:23,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188203617] [2022-11-20 10:50:23,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188203617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:23,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:23,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2022-11-20 10:50:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570103532] [2022-11-20 10:50:23,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:23,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:50:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:50:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2022-11-20 10:50:23,954 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:24,319 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2022-11-20 10:50:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:50:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-20 10:50:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:24,321 INFO L225 Difference]: With dead ends: 164 [2022-11-20 10:50:24,321 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 10:50:24,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2022-11-20 10:50:24,322 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 73 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:24,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 367 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 195 Invalid, 0 Unknown, 135 Unchecked, 0.3s Time] [2022-11-20 10:50:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 10:50:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 112. [2022-11-20 10:50:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 105 states have internal predecessors, (118), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2022-11-20 10:50:24,328 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 50 [2022-11-20 10:50:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:24,328 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2022-11-20 10:50:24,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:24,328 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2022-11-20 10:50:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 10:50:24,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:24,330 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:24,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:24,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:24,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:24,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1817385993, now seen corresponding path program 1 times [2022-11-20 10:50:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:24,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672669724] [2022-11-20 10:50:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:24,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:24,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:24,537 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:24,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 10:50:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:50:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-20 10:50:24,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:24,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672669724] [2022-11-20 10:50:24,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672669724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:24,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:24,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:50:24,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080127193] [2022-11-20 10:50:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:24,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:24,714 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:50:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:24,778 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2022-11-20 10:50:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:50:24,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-11-20 10:50:24,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:24,780 INFO L225 Difference]: With dead ends: 144 [2022-11-20 10:50:24,780 INFO L226 Difference]: Without dead ends: 144 [2022-11-20 10:50:24,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:24,781 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:24,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 246 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-20 10:50:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 114. [2022-11-20 10:50:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 106 states have internal predecessors, (119), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2022-11-20 10:50:24,786 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 52 [2022-11-20 10:50:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:24,786 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2022-11-20 10:50:24,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:50:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2022-11-20 10:50:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 10:50:24,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:24,788 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:24,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:24,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:24,996 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:24,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash -734770968, now seen corresponding path program 1 times [2022-11-20 10:50:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:24,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642694237] [2022-11-20 10:50:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:24,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:24,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:24,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:24,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 10:50:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:25,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:50:25,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 10:50:25,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:25,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:25,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642694237] [2022-11-20 10:50:25,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642694237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:25,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:25,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326980614] [2022-11-20 10:50:25,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:25,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:25,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:25,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:25,201 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-11-20 10:50:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:25,290 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2022-11-20 10:50:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:50:25,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) Word has length 52 [2022-11-20 10:50:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:25,294 INFO L225 Difference]: With dead ends: 146 [2022-11-20 10:50:25,294 INFO L226 Difference]: Without dead ends: 146 [2022-11-20 10:50:25,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:25,295 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 51 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:25,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 192 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-20 10:50:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 116. [2022-11-20 10:50:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 108 states have internal predecessors, (121), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:25,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2022-11-20 10:50:25,300 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 52 [2022-11-20 10:50:25,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:25,301 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2022-11-20 10:50:25,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-11-20 10:50:25,301 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2022-11-20 10:50:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:50:25,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:25,302 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:25,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:25,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:25,516 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1885083517, now seen corresponding path program 1 times [2022-11-20 10:50:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:25,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087330904] [2022-11-20 10:50:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:25,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:25,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:25,518 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:25,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 10:50:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:25,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:50:25,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:25,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 10:50:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:50:25,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:50:26,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:26,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087330904] [2022-11-20 10:50:26,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087330904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:26,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:26,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-20 10:50:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642859706] [2022-11-20 10:50:26,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:26,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:50:26,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:50:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:50:26,067 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:26,372 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2022-11-20 10:50:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:50:26,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-11-20 10:50:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:26,374 INFO L225 Difference]: With dead ends: 134 [2022-11-20 10:50:26,374 INFO L226 Difference]: Without dead ends: 134 [2022-11-20 10:50:26,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:26,375 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 39 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:26,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 402 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 35 Unchecked, 0.3s Time] [2022-11-20 10:50:26,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-20 10:50:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2022-11-20 10:50:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.2947368421052632) internal successors, (123), 109 states have internal predecessors, (123), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2022-11-20 10:50:26,381 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 55 [2022-11-20 10:50:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:26,381 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2022-11-20 10:50:26,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2022-11-20 10:50:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:50:26,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:26,383 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:26,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:26,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:26,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1885083518, now seen corresponding path program 1 times [2022-11-20 10:50:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:26,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844882670] [2022-11-20 10:50:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:26,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:26,598 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:26,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 10:50:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:26,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:50:26,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:26,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:50:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:50:27,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:50:28,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:28,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844882670] [2022-11-20 10:50:28,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844882670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:28,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:28,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 10:50:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510781816] [2022-11-20 10:50:28,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:28,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:50:28,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:28,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:50:28,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:50:28,372 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:50:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:29,630 INFO L93 Difference]: Finished difference Result 188 states and 204 transitions. [2022-11-20 10:50:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:50:29,632 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2022-11-20 10:50:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:29,633 INFO L225 Difference]: With dead ends: 188 [2022-11-20 10:50:29,633 INFO L226 Difference]: Without dead ends: 188 [2022-11-20 10:50:29,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:50:29,634 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 310 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:29,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 406 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 146 Unchecked, 0.9s Time] [2022-11-20 10:50:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-20 10:50:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 146. [2022-11-20 10:50:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 123 states have (on average 1.3902439024390243) internal successors, (171), 137 states have internal predecessors, (171), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 182 transitions. [2022-11-20 10:50:29,641 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 182 transitions. Word has length 55 [2022-11-20 10:50:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:29,641 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 182 transitions. [2022-11-20 10:50:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:50:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 182 transitions. [2022-11-20 10:50:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:50:29,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:29,642 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:29,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:29,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:29,854 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash 992549452, now seen corresponding path program 1 times [2022-11-20 10:50:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:29,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539573781] [2022-11-20 10:50:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:29,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:29,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:29,857 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:29,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 10:50:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:30,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:50:30,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 10:50:30,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 10:50:30,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:50:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539573781] [2022-11-20 10:50:30,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539573781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:30,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:30,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:50:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644520252] [2022-11-20 10:50:30,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:30,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:50:30,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:50:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:50:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:50:30,338 INFO L87 Difference]: Start difference. First operand 146 states and 182 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:50:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:30,585 INFO L93 Difference]: Finished difference Result 401 states and 519 transitions. [2022-11-20 10:50:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:50:30,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2022-11-20 10:50:30,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:30,587 INFO L225 Difference]: With dead ends: 401 [2022-11-20 10:50:30,587 INFO L226 Difference]: Without dead ends: 401 [2022-11-20 10:50:30,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:50:30,588 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 454 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:30,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 299 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:50:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-20 10:50:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 178. [2022-11-20 10:50:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 151 states have (on average 1.3708609271523178) internal successors, (207), 163 states have internal predecessors, (207), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 10:50:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 230 transitions. [2022-11-20 10:50:30,597 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 230 transitions. Word has length 56 [2022-11-20 10:50:30,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:30,598 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 230 transitions. [2022-11-20 10:50:30,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:50:30,598 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 230 transitions. [2022-11-20 10:50:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:50:30,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:30,599 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:30,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:30,816 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-11-20 10:50:30,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1691953052, now seen corresponding path program 1 times [2022-11-20 10:50:30,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:50:30,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579334357] [2022-11-20 10:50:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:50:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:50:30,819 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:50:30,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bda7cf0-bb1a-4202-b29f-3b5bbc368170/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 10:50:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:31,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 10:50:31,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:31,034 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 11 [2022-11-20 10:50:31,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 10:50:31,156 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 10:50:31,156 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 10:50:31,215 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 10:50:31,215 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 10:50:31,271 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 10:50:31,271 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 10:50:31,339 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 10:50:31,339 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 10:50:31,396 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 10:50:31,396 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 10:50:31,455 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 10:50:31,456 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 10:50:31,521 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 10:50:31,521 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 10:50:31,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 10:50:31,780 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 7 [2022-11-20 10:50:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:31,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:39,173 INFO L350 Elim1Store]: Elim1 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 86 treesize of output 84 [2022-11-20 10:50:58,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2955212377423854 treesize of output 2954937499516910