./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro --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 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 --- 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-8393723 [2022-11-18 19:57:49,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:57:49,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:57:49,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:57:49,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:57:49,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:57:49,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:57:49,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:57:49,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:57:49,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:57:49,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:57:49,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:57:49,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:57:49,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:57:49,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:57:49,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:57:49,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:57:49,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:57:49,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:57:49,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:57:49,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:57:49,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:57:49,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:57:49,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:57:49,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:57:49,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:57:49,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:57:49,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:57:49,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:57:49,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:57:49,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:57:49,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:57:49,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:57:49,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:57:49,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:57:49,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:57:49,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:57:49,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:57:49,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:57:49,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:57:49,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:57:49,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:57:49,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:57:49,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:57:49,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:57:49,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:57:49,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:57:49,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:57:49,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:57:49,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:57:49,356 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:57:49,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:57:49,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:57:49,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:57:49,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:57:49,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:57:49,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:57:49,358 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:57:49,358 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:57:49,358 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:57:49,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:57:49,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:57:49,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:57:49,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:57:49,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:57:49,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:57:49,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:57:49,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:49,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:57:49,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:57:49,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:57:49,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:57:49,361 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_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 [2022-11-18 19:57:49,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:57:49,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:57:49,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:57:49,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:57:49,732 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:57:49,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety/test-0235-3.i [2022-11-18 19:57:49,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/data/0b300d9dc/2cda117c703240e6849a288a01671589/FLAG14ae1003b [2022-11-18 19:57:50,484 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:57:50,490 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/sv-benchmarks/c/memsafety/test-0235-3.i [2022-11-18 19:57:50,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/data/0b300d9dc/2cda117c703240e6849a288a01671589/FLAG14ae1003b [2022-11-18 19:57:50,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/data/0b300d9dc/2cda117c703240e6849a288a01671589 [2022-11-18 19:57:50,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:57:50,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:57:50,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:50,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:57:50,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:57:50,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:50" (1/1) ... [2022-11-18 19:57:50,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1ad094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:50, skipping insertion in model container [2022-11-18 19:57:50,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:50" (1/1) ... [2022-11-18 19:57:50,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:57:50,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:57:51,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:57:51,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:57:51,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:57:51,319 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:57:51,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51 WrapperNode [2022-11-18 19:57:51,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:51,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:57:51,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:57:51,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:57:51,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,420 INFO L138 Inliner]: procedures = 188, calls = 73, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 240 [2022-11-18 19:57:51,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:57:51,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:57:51,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:57:51,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:57:51,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:57:51,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:57:51,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:57:51,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:57:51,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (1/1) ... [2022-11-18 19:57:51,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:51,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:51,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:57:51,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:57:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:57:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:57:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:57:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:57:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-18 19:57:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-18 19:57:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:57:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:57:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-18 19:57:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-18 19:57:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:57:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:57:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:57:51,749 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:57:51,757 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:57:52,457 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:57:52,466 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:57:52,466 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 19:57:52,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:57:52 BoogieIcfgContainer [2022-11-18 19:57:52,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:57:52,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:57:52,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:57:52,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:57:52,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:57:50" (1/3) ... [2022-11-18 19:57:52,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb56fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:57:52, skipping insertion in model container [2022-11-18 19:57:52,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:51" (2/3) ... [2022-11-18 19:57:52,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb56fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:57:52, skipping insertion in model container [2022-11-18 19:57:52,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:57:52" (3/3) ... [2022-11-18 19:57:52,479 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-3.i [2022-11-18 19:57:52,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:57:52,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 89 error locations. [2022-11-18 19:57:52,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:57:52,560 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;@5d99f374, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:57:52,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2022-11-18 19:57:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 138 states have (on average 1.8768115942028984) internal successors, (259), 227 states have internal predecessors, (259), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:57:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 19:57:52,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:52,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 19:57:52,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:57:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2022-11-18 19:57:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:52,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344270249] [2022-11-18 19:57:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:52,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:52,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344270249] [2022-11-18 19:57:52,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344270249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:52,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:52,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:52,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769167301] [2022-11-18 19:57:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:57:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:57:52,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:57:52,801 INFO L87 Difference]: Start difference. First operand has 243 states, 138 states have (on average 1.8768115942028984) internal successors, (259), 227 states have internal predecessors, (259), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:52,874 INFO L93 Difference]: Finished difference Result 243 states and 274 transitions. [2022-11-18 19:57:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:57:52,877 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 19:57:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:52,887 INFO L225 Difference]: With dead ends: 243 [2022-11-18 19:57:52,892 INFO L226 Difference]: Without dead ends: 241 [2022-11-18 19:57:52,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:57:52,899 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:52,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:57:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-18 19:57:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-18 19:57:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 137 states have (on average 1.7956204379562044) internal successors, (246), 225 states have internal predecessors, (246), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:57:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2022-11-18 19:57:52,957 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 4 [2022-11-18 19:57:52,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:52,957 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2022-11-18 19:57:52,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:52,958 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2022-11-18 19:57:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:57:52,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:52,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:57:52,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:57:52,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:57:52,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash 889942911, now seen corresponding path program 1 times [2022-11-18 19:57:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:52,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917060430] [2022-11-18 19:57:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:52,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:52,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:57:52,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325027763] [2022-11-18 19:57:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:52,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:52,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:52,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:53,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:57:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:53,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:57:53,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:53,219 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 [2022-11-18 19:57:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:53,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:53,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917060430] [2022-11-18 19:57:53,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:57:53,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325027763] [2022-11-18 19:57:53,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325027763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:53,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:53,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48726031] [2022-11-18 19:57:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:53,245 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:53,503 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2022-11-18 19:57:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:53,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:57:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:53,506 INFO L225 Difference]: With dead ends: 240 [2022-11-18 19:57:53,507 INFO L226 Difference]: Without dead ends: 240 [2022-11-18 19:57:53,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:53,509 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 9 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:53,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 438 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:57:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-18 19:57:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-18 19:57:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 137 states have (on average 1.7883211678832116) internal successors, (245), 224 states have internal predecessors, (245), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:57:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 271 transitions. [2022-11-18 19:57:53,529 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 271 transitions. Word has length 6 [2022-11-18 19:57:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:53,530 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 271 transitions. [2022-11-18 19:57:53,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 271 transitions. [2022-11-18 19:57:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:57:53,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:53,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:53,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:53,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:53,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:57:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1818426896, now seen corresponding path program 1 times [2022-11-18 19:57:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:53,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493479143] [2022-11-18 19:57:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:53,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:53,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:57:53,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874329616] [2022-11-18 19:57:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:53,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:53,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:53,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:53,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:57:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:53,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:57:53,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:53,920 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 8 treesize of output 7 [2022-11-18 19:57:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:53,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:53,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493479143] [2022-11-18 19:57:53,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:57:53,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874329616] [2022-11-18 19:57:53,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874329616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:53,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:53,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:57:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788617369] [2022-11-18 19:57:53,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:53,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:57:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:57:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:57:53,951 INFO L87 Difference]: Start difference. First operand 240 states and 271 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:54,204 INFO L93 Difference]: Finished difference Result 249 states and 280 transitions. [2022-11-18 19:57:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:57:54,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:57:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:54,206 INFO L225 Difference]: With dead ends: 249 [2022-11-18 19:57:54,207 INFO L226 Difference]: Without dead ends: 249 [2022-11-18 19:57:54,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:57:54,210 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 16 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:54,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 709 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:57:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-18 19:57:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-11-18 19:57:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 145 states have (on average 1.7517241379310344) internal successors, (254), 232 states have internal predecessors, (254), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:57:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 280 transitions. [2022-11-18 19:57:54,244 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 280 transitions. Word has length 7 [2022-11-18 19:57:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:54,244 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 280 transitions. [2022-11-18 19:57:54,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 280 transitions. [2022-11-18 19:57:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:57:54,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:54,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:54,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:54,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:54,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:57:54,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1283052409, now seen corresponding path program 1 times [2022-11-18 19:57:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:54,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799347713] [2022-11-18 19:57:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:54,490 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:57:54,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942176130] [2022-11-18 19:57:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:54,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:54,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:54,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:54,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:57:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:54,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:57:54,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:54,882 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 [2022-11-18 19:57:54,912 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 [2022-11-18 19:57:57,023 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (or (exists ((|zalloc_or_die_calloc_model_~size#1| Int)) (let ((.cse1 (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|))) (and (<= .cse0 (mod (* .cse1 |zalloc_or_die_calloc_model_~size#1|) 4294967296)) (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= 1 .cse1) (<= |c_zalloc_or_die_#in~size#1| |zalloc_or_die_calloc_model_~size#1|)))) (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0) (<= |c_zalloc_or_die_#in~size#1| 0) (<= .cse0 0)))) is different from true [2022-11-18 19:57:57,189 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 48 treesize of output 42 [2022-11-18 19:57:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:57:59,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:59,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:59,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799347713] [2022-11-18 19:57:59,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:57:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942176130] [2022-11-18 19:57:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942176130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:59,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:59,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:57:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726734074] [2022-11-18 19:57:59,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:59,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:57:59,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:57:59,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 19:57:59,771 INFO L87 Difference]: Start difference. First operand 249 states and 280 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:57:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:59,825 INFO L93 Difference]: Finished difference Result 261 states and 292 transitions. [2022-11-18 19:57:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:57:59,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2022-11-18 19:57:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:59,828 INFO L225 Difference]: With dead ends: 261 [2022-11-18 19:57:59,829 INFO L226 Difference]: Without dead ends: 251 [2022-11-18 19:57:59,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 19:57:59,831 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 0 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:59,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 784 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 281 Unchecked, 0.0s Time] [2022-11-18 19:57:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-18 19:57:59,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-11-18 19:57:59,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 147 states have (on average 1.7414965986394557) internal successors, (256), 234 states have internal predecessors, (256), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:57:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 282 transitions. [2022-11-18 19:57:59,851 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 282 transitions. Word has length 66 [2022-11-18 19:57:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:59,851 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 282 transitions. [2022-11-18 19:57:59,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:57:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 282 transitions. [2022-11-18 19:57:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 19:57:59,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:59,854 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:59,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:00,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:00,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash 370417648, now seen corresponding path program 1 times [2022-11-18 19:58:00,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:00,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235892714] [2022-11-18 19:58:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:00,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:00,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:00,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283670798] [2022-11-18 19:58:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:00,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:00,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:00,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:00,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:58:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:00,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:58:00,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:00,534 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 [2022-11-18 19:58:00,598 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 13 treesize of output 9 [2022-11-18 19:58:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 102 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 19:58:00,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-18 19:58:01,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:01,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235892714] [2022-11-18 19:58:01,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:01,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283670798] [2022-11-18 19:58:01,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283670798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:01,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:01,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-18 19:58:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188647304] [2022-11-18 19:58:01,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:01,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:58:01,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:58:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:58:01,204 INFO L87 Difference]: Start difference. First operand 251 states and 282 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:58:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:02,056 INFO L93 Difference]: Finished difference Result 277 states and 310 transitions. [2022-11-18 19:58:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:58:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-11-18 19:58:02,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:02,059 INFO L225 Difference]: With dead ends: 277 [2022-11-18 19:58:02,059 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 19:58:02,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:58:02,060 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 44 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:02,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1391 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:58:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 19:58:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-11-18 19:58:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 153 states have (on average 1.7124183006535947) internal successors, (262), 240 states have internal predecessors, (262), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:58:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 288 transitions. [2022-11-18 19:58:02,071 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 288 transitions. Word has length 71 [2022-11-18 19:58:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:02,071 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 288 transitions. [2022-11-18 19:58:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:58:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 288 transitions. [2022-11-18 19:58:02,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 19:58:02,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:02,074 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:02,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:02,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 955905991, now seen corresponding path program 2 times [2022-11-18 19:58:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:02,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863842743] [2022-11-18 19:58:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:02,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:02,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451980905] [2022-11-18 19:58:02,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:58:02,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:02,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:02,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:02,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:58:03,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:58:03,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:03,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:58:03,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:03,229 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 [2022-11-18 19:58:03,303 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 13 treesize of output 9 [2022-11-18 19:58:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 220 proven. 36 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-18 19:58:03,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 47 proven. 106 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-18 19:58:04,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:04,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863842743] [2022-11-18 19:58:04,254 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:04,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451980905] [2022-11-18 19:58:04,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451980905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:04,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:04,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-18 19:58:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447754973] [2022-11-18 19:58:04,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:04,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:58:04,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:58:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:58:04,258 INFO L87 Difference]: Start difference. First operand 257 states and 288 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:58:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:05,485 INFO L93 Difference]: Finished difference Result 285 states and 320 transitions. [2022-11-18 19:58:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:58:05,486 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-11-18 19:58:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:05,487 INFO L225 Difference]: With dead ends: 285 [2022-11-18 19:58:05,487 INFO L226 Difference]: Without dead ends: 265 [2022-11-18 19:58:05,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:58:05,489 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 83 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:05,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2924 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:58:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-18 19:58:05,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-11-18 19:58:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 161 states have (on average 1.6770186335403727) internal successors, (270), 248 states have internal predecessors, (270), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:58:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 296 transitions. [2022-11-18 19:58:05,500 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 296 transitions. Word has length 86 [2022-11-18 19:58:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:05,502 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 296 transitions. [2022-11-18 19:58:05,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:58:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 296 transitions. [2022-11-18 19:58:05,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 19:58:05,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:05,512 INFO L195 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:05,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:05,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:05,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1008033017, now seen corresponding path program 3 times [2022-11-18 19:58:05,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:05,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500932507] [2022-11-18 19:58:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:05,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:05,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:05,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950341922] [2022-11-18 19:58:05,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:58:05,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:05,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:05,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:05,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:58:06,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:58:06,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:06,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:58:06,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:06,088 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 [2022-11-18 19:58:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2022-11-18 19:58:06,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:06,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:06,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500932507] [2022-11-18 19:58:06,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:06,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950341922] [2022-11-18 19:58:06,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950341922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:06,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:06,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:06,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771693947] [2022-11-18 19:58:06,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:06,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:06,132 INFO L87 Difference]: Start difference. First operand 265 states and 296 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:58:06,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:06,366 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2022-11-18 19:58:06,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:58:06,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2022-11-18 19:58:06,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:06,368 INFO L225 Difference]: With dead ends: 264 [2022-11-18 19:58:06,368 INFO L226 Difference]: Without dead ends: 264 [2022-11-18 19:58:06,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:58:06,369 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 16 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:06,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 728 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:58:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-18 19:58:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-18 19:58:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 161 states have (on average 1.670807453416149) internal successors, (269), 247 states have internal predecessors, (269), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:58:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2022-11-18 19:58:06,378 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 106 [2022-11-18 19:58:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:06,379 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2022-11-18 19:58:06,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:58:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2022-11-18 19:58:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:58:06,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:06,381 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:06,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:06,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1842595626, now seen corresponding path program 1 times [2022-11-18 19:58:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:06,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149495270] [2022-11-18 19:58:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:06,654 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012214476] [2022-11-18 19:58:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:06,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:06,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:06,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:06,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:58:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:07,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:58:07,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:07,316 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1495 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1495))) is different from true [2022-11-18 19:58:07,564 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:58:07,564 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 12 treesize of output 14 [2022-11-18 19:58:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 87 refuted. 0 times theorem prover too weak. 754 trivial. 1 not checked. [2022-11-18 19:58:07,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:08,122 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:58:08,122 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 12 treesize of output 11 [2022-11-18 19:58:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 88 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-11-18 19:58:08,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149495270] [2022-11-18 19:58:08,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012214476] [2022-11-18 19:58:08,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012214476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:08,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:08,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2022-11-18 19:58:08,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750324867] [2022-11-18 19:58:08,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:08,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:58:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:58:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2022-11-18 19:58:08,156 INFO L87 Difference]: Start difference. First operand 264 states and 295 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:58:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:09,425 INFO L93 Difference]: Finished difference Result 271 states and 306 transitions. [2022-11-18 19:58:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:58:09,425 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2022-11-18 19:58:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:09,429 INFO L225 Difference]: With dead ends: 271 [2022-11-18 19:58:09,429 INFO L226 Difference]: Without dead ends: 271 [2022-11-18 19:58:09,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 227 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=348, Unknown=1, NotChecked=40, Total=506 [2022-11-18 19:58:09,430 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 100 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:09,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1638 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 675 Invalid, 0 Unknown, 420 Unchecked, 0.9s Time] [2022-11-18 19:58:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-18 19:58:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 262. [2022-11-18 19:58:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 161 states have (on average 1.6583850931677018) internal successors, (267), 245 states have internal predecessors, (267), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:58:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2022-11-18 19:58:09,440 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 121 [2022-11-18 19:58:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:09,440 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2022-11-18 19:58:09,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:58:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2022-11-18 19:58:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:58:09,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:09,442 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:09,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:09,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:58:09,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1842595627, now seen corresponding path program 1 times [2022-11-18 19:58:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:09,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960478275] [2022-11-18 19:58:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:09,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:09,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:09,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379545150] [2022-11-18 19:58:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:09,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:09,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:09,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:09,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:58:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:20,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-18 19:58:20,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:20,922 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 [2022-11-18 19:58:20,941 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 [2022-11-18 19:58:23,260 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2100 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2100)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:58:23,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:23,412 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 22 treesize of output 24 [2022-11-18 19:58:23,455 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:58:23,455 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 11 treesize of output 11 [2022-11-18 19:58:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 590 proven. 316 refuted. 0 times theorem prover too weak. 494 trivial. 151 not checked. [2022-11-18 19:58:23,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:29,964 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:58:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:29,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960478275] [2022-11-18 19:58:29,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:29,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379545150] [2022-11-18 19:58:29,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379545150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:29,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:29,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-18 19:58:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110949087] [2022-11-18 19:58:29,967 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:58:29,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:29,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:58:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=739, Unknown=1, NotChecked=54, Total=870 [2022-11-18 19:58:29,968 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:58:37,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:37,272 INFO L93 Difference]: Finished difference Result 362 states and 414 transitions. [2022-11-18 19:58:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:58:37,273 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 121 [2022-11-18 19:58:37,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:37,275 INFO L225 Difference]: With dead ends: 362 [2022-11-18 19:58:37,275 INFO L226 Difference]: Without dead ends: 362 [2022-11-18 19:58:37,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=141, Invalid=1661, Unknown=8, NotChecked=82, Total=1892 [2022-11-18 19:58:37,277 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 111 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2666 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:37,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1846 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1179 Invalid, 0 Unknown, 2666 Unchecked, 1.5s Time] [2022-11-18 19:58:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-18 19:58:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 261. [2022-11-18 19:58:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 161 states have (on average 1.6521739130434783) internal successors, (266), 244 states have internal predecessors, (266), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:58:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 292 transitions. [2022-11-18 19:58:37,290 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 292 transitions. Word has length 121 [2022-11-18 19:58:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:37,292 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 292 transitions. [2022-11-18 19:58:37,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:58:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 292 transitions. [2022-11-18 19:58:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 19:58:37,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:37,297 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:37,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:37,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:37,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1207870859, now seen corresponding path program 1 times [2022-11-18 19:58:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:37,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80636884] [2022-11-18 19:58:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:37,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:37,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13261134] [2022-11-18 19:58:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:37,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:37,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:37,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:58:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:38,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 19:58:38,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:38,304 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2716 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2716))) is different from true [2022-11-18 19:58:38,505 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:58:38,505 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 12 treesize of output 14 [2022-11-18 19:58:38,551 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2717 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2717))) is different from true [2022-11-18 19:58:38,764 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:58:38,765 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 12 treesize of output 14 [2022-11-18 19:58:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 174 refuted. 0 times theorem prover too weak. 574 trivial. 3 not checked. [2022-11-18 19:58:38,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:39,707 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:58:39,707 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 12 treesize of output 11 [2022-11-18 19:58:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 176 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-18 19:58:39,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:39,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80636884] [2022-11-18 19:58:39,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:39,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13261134] [2022-11-18 19:58:39,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13261134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:39,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:39,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2022-11-18 19:58:39,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579275327] [2022-11-18 19:58:39,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:58:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:58:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=154, Unknown=2, NotChecked=50, Total=240 [2022-11-18 19:58:39,730 INFO L87 Difference]: Start difference. First operand 261 states and 292 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:58:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:41,292 INFO L93 Difference]: Finished difference Result 448 states and 517 transitions. [2022-11-18 19:58:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:58:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 123 [2022-11-18 19:58:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:41,295 INFO L225 Difference]: With dead ends: 448 [2022-11-18 19:58:41,295 INFO L226 Difference]: Without dead ends: 448 [2022-11-18 19:58:41,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 225 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=351, Unknown=2, NotChecked=78, Total=506 [2022-11-18 19:58:41,296 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 304 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 788 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:41,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1821 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1031 Invalid, 0 Unknown, 788 Unchecked, 1.3s Time] [2022-11-18 19:58:41,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-18 19:58:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 301. [2022-11-18 19:58:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 198 states have (on average 1.5404040404040404) internal successors, (305), 280 states have internal predecessors, (305), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 19:58:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 335 transitions. [2022-11-18 19:58:41,312 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 335 transitions. Word has length 123 [2022-11-18 19:58:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:41,312 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 335 transitions. [2022-11-18 19:58:41,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:58:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 335 transitions. [2022-11-18 19:58:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 19:58:41,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:41,314 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:41,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:41,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:58:41,522 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1207870860, now seen corresponding path program 1 times [2022-11-18 19:58:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:41,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721906805] [2022-11-18 19:58:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:41,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:41,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894786300] [2022-11-18 19:58:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:41,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:41,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:41,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:58:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:43,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 19:58:43,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:43,855 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 [2022-11-18 19:58:43,876 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 [2022-11-18 19:58:51,266 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3337 Int) (v_ArrVal_3338 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3337) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3338)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:58:51,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:51,575 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 22 treesize of output 24 [2022-11-18 19:58:51,607 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:58:51,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:58:52,181 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3339 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3339) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:58:52,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:52,472 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 22 treesize of output 24 [2022-11-18 19:58:52,663 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:58:52,663 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 11 treesize of output 11 [2022-11-18 19:58:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 722 proven. 125 refuted. 0 times theorem prover too weak. 386 trivial. 318 not checked. [2022-11-18 19:58:53,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:54,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:54,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721906805] [2022-11-18 19:58:54,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:54,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894786300] [2022-11-18 19:58:54,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894786300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:54,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:54,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-18 19:58:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178768331] [2022-11-18 19:58:54,653 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:58:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:58:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=412, Unknown=2, NotChecked=82, Total=552 [2022-11-18 19:58:54,655 INFO L87 Difference]: Start difference. First operand 301 states and 335 transitions. Second operand has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:58:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:59,517 INFO L93 Difference]: Finished difference Result 402 states and 456 transitions. [2022-11-18 19:58:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:58:59,518 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 123 [2022-11-18 19:58:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:59,520 INFO L225 Difference]: With dead ends: 402 [2022-11-18 19:58:59,520 INFO L226 Difference]: Without dead ends: 402 [2022-11-18 19:58:59,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=97, Invalid=895, Unknown=8, NotChecked=122, Total=1122 [2022-11-18 19:58:59,522 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 111 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 3826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3132 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:59,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2037 Invalid, 3826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 681 Invalid, 0 Unknown, 3132 Unchecked, 0.9s Time] [2022-11-18 19:58:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-18 19:58:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 301. [2022-11-18 19:58:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 198 states have (on average 1.5353535353535352) internal successors, (304), 280 states have internal predecessors, (304), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 19:58:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 334 transitions. [2022-11-18 19:58:59,534 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 334 transitions. Word has length 123 [2022-11-18 19:58:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:59,535 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 334 transitions. [2022-11-18 19:58:59,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:58:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 334 transitions. [2022-11-18 19:58:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:58:59,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:59,537 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:59,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:59,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:58:59,751 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:58:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1210709023, now seen corresponding path program 1 times [2022-11-18 19:58:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:59,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987756733] [2022-11-18 19:58:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:59,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:59,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293418843] [2022-11-18 19:58:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:59,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:59,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:59,808 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:59,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:59:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:00,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:59:00,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 352 proven. 88 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2022-11-18 19:59:00,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:00,634 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 8 treesize of output 6 [2022-11-18 19:59:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 352 proven. 88 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2022-11-18 19:59:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:00,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987756733] [2022-11-18 19:59:00,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:00,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293418843] [2022-11-18 19:59:00,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293418843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:00,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:00,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-18 19:59:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621472061] [2022-11-18 19:59:00,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:00,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:59:00,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:59:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:59:00,839 INFO L87 Difference]: Start difference. First operand 301 states and 334 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:59:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:01,390 INFO L93 Difference]: Finished difference Result 319 states and 359 transitions. [2022-11-18 19:59:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 124 [2022-11-18 19:59:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:01,392 INFO L225 Difference]: With dead ends: 319 [2022-11-18 19:59:01,393 INFO L226 Difference]: Without dead ends: 319 [2022-11-18 19:59:01,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 233 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:59:01,393 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 225 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:01,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1552 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:59:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-18 19:59:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 300. [2022-11-18 19:59:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 198 states have (on average 1.5303030303030303) internal successors, (303), 279 states have internal predecessors, (303), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 19:59:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 333 transitions. [2022-11-18 19:59:01,404 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 333 transitions. Word has length 124 [2022-11-18 19:59:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:01,405 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 333 transitions. [2022-11-18 19:59:01,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:59:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 333 transitions. [2022-11-18 19:59:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-18 19:59:01,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:01,407 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:01,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:01,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:59:01,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:59:01,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:01,617 INFO L85 PathProgramCache]: Analyzing trace with hash 444765602, now seen corresponding path program 1 times [2022-11-18 19:59:01,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:01,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232182066] [2022-11-18 19:59:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:01,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:01,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:01,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447192228] [2022-11-18 19:59:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:01,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:01,703 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:01,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:59:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:02,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:59:02,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2022-11-18 19:59:02,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:02,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232182066] [2022-11-18 19:59:02,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:02,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447192228] [2022-11-18 19:59:02,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447192228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:02,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:02,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:59:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597307791] [2022-11-18 19:59:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:02,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:59:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:59:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:02,354 INFO L87 Difference]: Start difference. First operand 300 states and 333 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:59:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:02,583 INFO L93 Difference]: Finished difference Result 307 states and 344 transitions. [2022-11-18 19:59:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:59:02,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 126 [2022-11-18 19:59:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:02,586 INFO L225 Difference]: With dead ends: 307 [2022-11-18 19:59:02,586 INFO L226 Difference]: Without dead ends: 307 [2022-11-18 19:59:02,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:02,587 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 98 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:02,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 361 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:59:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-18 19:59:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 299. [2022-11-18 19:59:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 198 states have (on average 1.5252525252525253) internal successors, (302), 278 states have internal predecessors, (302), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 19:59:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 332 transitions. [2022-11-18 19:59:02,598 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 332 transitions. Word has length 126 [2022-11-18 19:59:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:02,599 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 332 transitions. [2022-11-18 19:59:02,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:59:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 332 transitions. [2022-11-18 19:59:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 19:59:02,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:02,601 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:02,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:02,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:59:02,810 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:59:02,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:02,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1175835145, now seen corresponding path program 1 times [2022-11-18 19:59:02,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:02,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732820106] [2022-11-18 19:59:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:02,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:02,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:02,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593826844] [2022-11-18 19:59:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:02,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:02,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:02,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:02,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:59:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:03,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:59:03,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:03,747 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5215 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5215)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:59:03,899 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:59:03,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:59:03,960 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5216 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5216))) is different from true [2022-11-18 19:59:04,006 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5216 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_5216))) is different from true [2022-11-18 19:59:04,014 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5216 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_5216))) is different from true [2022-11-18 19:59:04,021 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5216 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_5216))) is different from true [2022-11-18 19:59:04,051 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:59:04,051 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 12 treesize of output 18 [2022-11-18 19:59:04,144 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5217 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5217))) is different from true [2022-11-18 19:59:04,348 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:59:04,349 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 16 treesize of output 22 [2022-11-18 19:59:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 713 proven. 87 refuted. 0 times theorem prover too weak. 310 trivial. 441 not checked. [2022-11-18 19:59:04,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:05,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732820106] [2022-11-18 19:59:05,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593826844] [2022-11-18 19:59:05,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593826844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:05,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:59:05,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-18 19:59:05,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328380641] [2022-11-18 19:59:05,906 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:05,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:59:05,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:59:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=484, Unknown=6, NotChecked=294, Total=870 [2022-11-18 19:59:05,908 INFO L87 Difference]: Start difference. First operand 299 states and 332 transitions. Second operand has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:59:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:07,566 INFO L93 Difference]: Finished difference Result 469 states and 543 transitions. [2022-11-18 19:59:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:59:07,567 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 130 [2022-11-18 19:59:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:07,570 INFO L225 Difference]: With dead ends: 469 [2022-11-18 19:59:07,571 INFO L226 Difference]: Without dead ends: 469 [2022-11-18 19:59:07,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 149 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=152, Invalid=736, Unknown=6, NotChecked=366, Total=1260 [2022-11-18 19:59:07,572 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 398 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2855 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:07,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1801 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1091 Invalid, 0 Unknown, 2855 Unchecked, 1.3s Time] [2022-11-18 19:59:07,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-18 19:59:07,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 322. [2022-11-18 19:59:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 217 states have (on average 1.4930875576036866) internal successors, (324), 296 states have internal predecessors, (324), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 19:59:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 364 transitions. [2022-11-18 19:59:07,587 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 364 transitions. Word has length 130 [2022-11-18 19:59:07,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:07,587 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 364 transitions. [2022-11-18 19:59:07,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:59:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 364 transitions. [2022-11-18 19:59:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 19:59:07,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:07,590 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:07,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:07,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:07,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 19:59:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1175835146, now seen corresponding path program 1 times [2022-11-18 19:59:07,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:07,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726329974] [2022-11-18 19:59:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:07,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:07,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:07,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875147785] [2022-11-18 19:59:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:07,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:07,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:07,856 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:07,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:59:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:10,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-18 19:59:10,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:10,276 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 [2022-11-18 19:59:10,299 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 [2022-11-18 19:59:19,369 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:59:19,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:59:19,440 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 22 treesize of output 24 [2022-11-18 19:59:24,416 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:59:24,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:59:24,496 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 22 treesize of output 24 [2022-11-18 19:59:27,272 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_ArrVal_5867 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5867) |c_#length|) (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_5867))) (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0) (exists ((v_ArrVal_5867 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (<= 0 v_ArrVal_5867) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5867) |c_#length|))))) is different from true [2022-11-18 19:59:31,154 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5867 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int)) (let ((.cse0 (+ (* |aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296) |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|))) (and (< 7 |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5867) |c_#length|) (<= (mod (* (div .cse0 |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_5867) (= (mod .cse0 |zalloc_or_die_calloc_model_~size#1|) 0) (< |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296)))) is different from true [2022-11-18 19:59:32,047 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:59:32,047 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 22 treesize of output 28 [2022-11-18 19:59:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 475 proven. 875 refuted. 0 times theorem prover too weak. 138 trivial. 63 not checked. [2022-11-18 19:59:37,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:40,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:40,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726329974] [2022-11-18 19:59:40,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:40,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875147785] [2022-11-18 19:59:40,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875147785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:40,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:59:40,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2022-11-18 19:59:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011717036] [2022-11-18 19:59:40,911 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:40,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 19:59:40,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:40,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 19:59:40,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2487, Unknown=17, NotChecked=202, Total=2862 [2022-11-18 19:59:40,914 INFO L87 Difference]: Start difference. First operand 322 states and 364 transitions. Second operand has 52 states, 49 states have (on average 1.816326530612245) internal successors, (89), 47 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:00:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:01,589 INFO L93 Difference]: Finished difference Result 457 states and 522 transitions. [2022-11-18 20:00:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:00:01,590 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 1.816326530612245) internal successors, (89), 47 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 130 [2022-11-18 20:00:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:01,593 INFO L225 Difference]: With dead ends: 457 [2022-11-18 20:00:01,593 INFO L226 Difference]: Without dead ends: 457 [2022-11-18 20:00:01,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=352, Invalid=5944, Unknown=32, NotChecked=314, Total=6642 [2022-11-18 20:00:01,596 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 235 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 6076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5215 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:01,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2361 Invalid, 6076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 848 Invalid, 0 Unknown, 5215 Unchecked, 1.3s Time] [2022-11-18 20:00:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-18 20:00:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 355. [2022-11-18 20:00:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 248 states have (on average 1.4435483870967742) internal successors, (358), 327 states have internal predecessors, (358), 20 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-18 20:00:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 399 transitions. [2022-11-18 20:00:01,609 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 399 transitions. Word has length 130 [2022-11-18 20:00:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:01,610 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 399 transitions. [2022-11-18 20:00:01,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 1.816326530612245) internal successors, (89), 47 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:00:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 399 transitions. [2022-11-18 20:00:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 20:00:01,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:01,613 INFO L195 NwaCegarLoop]: trace histogram [49, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:01,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:01,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:00:01,820 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:00:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1679355791, now seen corresponding path program 2 times [2022-11-18 20:00:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:01,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834713988] [2022-11-18 20:00:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:01,891 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:00:01,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404588675] [2022-11-18 20:00:01,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:00:01,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:01,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:01,894 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:01,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:00:05,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:00:05,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:00:05,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 154 conjunts are in the unsatisfiable core [2022-11-18 20:00:05,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:05,567 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 [2022-11-18 20:00:05,587 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 [2022-11-18 20:00:14,714 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:00:14,714 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 22 treesize of output 28 [2022-11-18 20:00:15,155 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:00:15,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:00:20,112 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 20:00:20,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:00:20,127 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 22 treesize of output 24 [2022-11-18 20:00:22,912 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_6523 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6523) |c_#length|) (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_6523))) (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0) (exists ((v_ArrVal_6523 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6523) |c_#length|) (<= 0 v_ArrVal_6523))))) is different from true [2022-11-18 20:00:26,992 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_6523 Int) (|aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int)) (let ((.cse0 (+ (* |aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296) |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|))) (and (<= (mod (* (div .cse0 |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_6523) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6523) |c_#length|) (< 8 |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|) (= (mod .cse0 |zalloc_or_die_calloc_model_~size#1|) 0) (< |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296)))) is different from true [2022-11-18 20:00:27,899 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:00:27,900 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 22 treesize of output 28 [2022-11-18 20:00:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 414 proven. 1006 refuted. 0 times theorem prover too weak. 119 trivial. 66 not checked. [2022-11-18 20:00:39,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:45,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:45,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834713988] [2022-11-18 20:00:45,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:00:45,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404588675] [2022-11-18 20:00:45,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404588675] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:45,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:00:45,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2022-11-18 20:00:45,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874876603] [2022-11-18 20:00:45,011 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:45,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 20:00:45,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 20:00:45,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2900, Unknown=19, NotChecked=218, Total=3306 [2022-11-18 20:00:45,013 INFO L87 Difference]: Start difference. First operand 355 states and 399 transitions. Second operand has 56 states, 52 states have (on average 1.7692307692307692) internal successors, (92), 51 states have internal predecessors, (92), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:01:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:12,500 INFO L93 Difference]: Finished difference Result 553 states and 654 transitions. [2022-11-18 20:01:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:01:12,501 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 52 states have (on average 1.7692307692307692) internal successors, (92), 51 states have internal predecessors, (92), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 131 [2022-11-18 20:01:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:12,505 INFO L225 Difference]: With dead ends: 553 [2022-11-18 20:01:12,505 INFO L226 Difference]: Without dead ends: 553 [2022-11-18 20:01:12,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 51.9s TimeCoverageRelationStatistics Valid=300, Invalid=5386, Unknown=22, NotChecked=298, Total=6006 [2022-11-18 20:01:12,508 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 352 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 9010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7831 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:12,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 2797 Invalid, 9010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1155 Invalid, 0 Unknown, 7831 Unchecked, 1.5s Time] [2022-11-18 20:01:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-18 20:01:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 392. [2022-11-18 20:01:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 279 states have (on average 1.4050179211469533) internal successors, (392), 360 states have internal predecessors, (392), 23 states have call successors, (23), 7 states have call predecessors, (23), 10 states have return successors, (34), 24 states have call predecessors, (34), 23 states have call successors, (34) [2022-11-18 20:01:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 449 transitions. [2022-11-18 20:01:12,545 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 449 transitions. Word has length 131 [2022-11-18 20:01:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:12,546 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 449 transitions. [2022-11-18 20:01:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 52 states have (on average 1.7692307692307692) internal successors, (92), 51 states have internal predecessors, (92), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:01:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 449 transitions. [2022-11-18 20:01:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 20:01:12,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:12,548 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:12,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:12,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:01:12,767 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:01:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2091151160, now seen corresponding path program 1 times [2022-11-18 20:01:12,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:12,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646013027] [2022-11-18 20:01:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:12,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:12,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409551190] [2022-11-18 20:01:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:12,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:12,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:12,839 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:12,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:01:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:13,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:01:13,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2022-11-18 20:01:13,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:13,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646013027] [2022-11-18 20:01:13,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:13,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409551190] [2022-11-18 20:01:13,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409551190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:13,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:13,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:13,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755690243] [2022-11-18 20:01:13,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:13,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:13,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:13,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:13,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:13,703 INFO L87 Difference]: Start difference. First operand 392 states and 449 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:01:13,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:13,981 INFO L93 Difference]: Finished difference Result 407 states and 474 transitions. [2022-11-18 20:01:13,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:13,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 131 [2022-11-18 20:01:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:13,984 INFO L225 Difference]: With dead ends: 407 [2022-11-18 20:01:13,985 INFO L226 Difference]: Without dead ends: 407 [2022-11-18 20:01:13,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:13,986 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 166 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:13,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 537 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:01:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-18 20:01:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 391. [2022-11-18 20:01:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 279 states have (on average 1.4014336917562724) internal successors, (391), 359 states have internal predecessors, (391), 23 states have call successors, (23), 7 states have call predecessors, (23), 10 states have return successors, (34), 24 states have call predecessors, (34), 23 states have call successors, (34) [2022-11-18 20:01:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 448 transitions. [2022-11-18 20:01:14,000 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 448 transitions. Word has length 131 [2022-11-18 20:01:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:14,000 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 448 transitions. [2022-11-18 20:01:14,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:01:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 448 transitions. [2022-11-18 20:01:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 20:01:14,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:14,003 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:14,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:14,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:01:14,213 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:01:14,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:14,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2091151161, now seen corresponding path program 1 times [2022-11-18 20:01:14,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:14,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269095114] [2022-11-18 20:01:14,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:14,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:14,276 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:14,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953356002] [2022-11-18 20:01:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:14,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:14,278 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:14,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:01:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:16,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-18 20:01:16,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:16,914 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 [2022-11-18 20:01:16,933 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 [2022-11-18 20:01:26,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:26,086 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 22 treesize of output 24 [2022-11-18 20:01:26,210 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:01:26,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:01:27,651 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7802 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_7802) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 20:01:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:27,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:01:28,092 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 20:01:28,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 618 proven. 404 refuted. 0 times theorem prover too weak. 290 trivial. 239 not checked. [2022-11-18 20:01:30,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:31,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269095114] [2022-11-18 20:01:31,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:31,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953356002] [2022-11-18 20:01:31,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953356002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:31,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:01:31,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-11-18 20:01:31,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475036756] [2022-11-18 20:01:31,253 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:01:31,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:01:31,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=909, Unknown=1, NotChecked=60, Total=1056 [2022-11-18 20:01:31,255 INFO L87 Difference]: Start difference. First operand 391 states and 448 transitions. Second operand has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:01:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:37,706 INFO L93 Difference]: Finished difference Result 510 states and 592 transitions. [2022-11-18 20:01:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:01:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 131 [2022-11-18 20:01:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:37,710 INFO L225 Difference]: With dead ends: 510 [2022-11-18 20:01:37,710 INFO L226 Difference]: Without dead ends: 510 [2022-11-18 20:01:37,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=165, Invalid=1908, Unknown=1, NotChecked=88, Total=2162 [2022-11-18 20:01:37,711 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 114 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3161 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:37,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1734 Invalid, 3969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 795 Invalid, 0 Unknown, 3161 Unchecked, 1.0s Time] [2022-11-18 20:01:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-18 20:01:37,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 406. [2022-11-18 20:01:37,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 294 states have (on average 1.3979591836734695) internal successors, (411), 374 states have internal predecessors, (411), 23 states have call successors, (23), 7 states have call predecessors, (23), 10 states have return successors, (34), 24 states have call predecessors, (34), 23 states have call successors, (34) [2022-11-18 20:01:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 468 transitions. [2022-11-18 20:01:37,728 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 468 transitions. Word has length 131 [2022-11-18 20:01:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:37,728 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 468 transitions. [2022-11-18 20:01:37,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.466666666666667) internal successors, (74), 29 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:01:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 468 transitions. [2022-11-18 20:01:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:01:37,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:37,731 INFO L195 NwaCegarLoop]: trace histogram [50, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:37,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:37,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:01:37,947 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:01:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash -925501818, now seen corresponding path program 3 times [2022-11-18 20:01:37,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:37,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628820326] [2022-11-18 20:01:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:37,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:38,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:38,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815323474] [2022-11-18 20:01:38,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:01:38,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:38,022 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:38,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:03:35,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:03:35,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:35,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 20:03:35,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:35,557 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 [2022-11-18 20:03:35,614 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 13 treesize of output 9 [2022-11-18 20:03:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 671 proven. 230 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-18 20:03:36,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 495 proven. 45 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2022-11-18 20:03:38,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:38,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628820326] [2022-11-18 20:03:38,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:03:38,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815323474] [2022-11-18 20:03:38,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815323474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:38,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:38,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2022-11-18 20:03:38,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858812101] [2022-11-18 20:03:38,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:38,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:03:38,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:03:38,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:03:38,203 INFO L87 Difference]: Start difference. First operand 406 states and 468 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:03:51,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:51,010 INFO L93 Difference]: Finished difference Result 495 states and 590 transitions. [2022-11-18 20:03:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:03:51,011 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) Word has length 132 [2022-11-18 20:03:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:51,013 INFO L225 Difference]: With dead ends: 495 [2022-11-18 20:03:51,013 INFO L226 Difference]: Without dead ends: 450 [2022-11-18 20:03:51,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1385, Invalid=5095, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 20:03:51,016 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 585 mSDsluCounter, 4247 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:51,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 4499 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:03:51,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-18 20:03:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 417. [2022-11-18 20:03:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 309 states have (on average 1.3656957928802589) internal successors, (422), 388 states have internal predecessors, (422), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (27), 21 states have call predecessors, (27), 21 states have call successors, (27) [2022-11-18 20:03:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 470 transitions. [2022-11-18 20:03:51,067 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 470 transitions. Word has length 132 [2022-11-18 20:03:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:51,068 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 470 transitions. [2022-11-18 20:03:51,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 2 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:03:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 470 transitions. [2022-11-18 20:03:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:03:51,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:51,071 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:51,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:51,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:51,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:03:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1581456842, now seen corresponding path program 4 times [2022-11-18 20:03:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:51,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535201001] [2022-11-18 20:03:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:51,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:03:51,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435994394] [2022-11-18 20:03:51,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:03:51,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:51,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:51,374 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:51,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:03:52,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:03:52,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:52,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-18 20:03:52,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:52,672 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 [2022-11-18 20:03:52,695 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 [2022-11-18 20:03:52,729 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 [2022-11-18 20:04:03,786 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:04:03,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:04:03,877 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 22 treesize of output 24 [2022-11-18 20:04:07,229 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9254 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_9254) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 20:04:07,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:04:07,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:04:07,485 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 20:04:07,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 20:04:09,193 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9255 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_9255) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 20:04:09,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:04:09,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:04:09,555 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:04:09,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 20:04:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 600 proven. 341 refuted. 0 times theorem prover too weak. 350 trivial. 974 not checked. [2022-11-18 20:04:11,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535201001] [2022-11-18 20:04:12,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:04:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435994394] [2022-11-18 20:04:12,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435994394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:12,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:04:12,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-18 20:04:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764977036] [2022-11-18 20:04:12,694 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:12,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:04:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:04:12,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1225, Unknown=2, NotChecked=142, Total=1482 [2022-11-18 20:04:12,696 INFO L87 Difference]: Start difference. First operand 417 states and 470 transitions. Second operand has 37 states, 34 states have (on average 2.411764705882353) internal successors, (82), 34 states have internal predecessors, (82), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:04:20,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:20,446 INFO L93 Difference]: Finished difference Result 519 states and 592 transitions. [2022-11-18 20:04:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:04:20,447 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.411764705882353) internal successors, (82), 34 states have internal predecessors, (82), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 142 [2022-11-18 20:04:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:20,448 INFO L225 Difference]: With dead ends: 519 [2022-11-18 20:04:20,448 INFO L226 Difference]: Without dead ends: 519 [2022-11-18 20:04:20,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=188, Invalid=2268, Unknown=2, NotChecked=194, Total=2652 [2022-11-18 20:04:20,450 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 113 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 5711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4652 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:20,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 3168 Invalid, 5711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1046 Invalid, 0 Unknown, 4652 Unchecked, 1.3s Time] [2022-11-18 20:04:20,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-18 20:04:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 417. [2022-11-18 20:04:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 309 states have (on average 1.3624595469255663) internal successors, (421), 388 states have internal predecessors, (421), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (27), 21 states have call predecessors, (27), 21 states have call successors, (27) [2022-11-18 20:04:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 469 transitions. [2022-11-18 20:04:20,467 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 469 transitions. Word has length 142 [2022-11-18 20:04:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:20,468 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 469 transitions. [2022-11-18 20:04:20,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.411764705882353) internal successors, (82), 34 states have internal predecessors, (82), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:04:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 469 transitions. [2022-11-18 20:04:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:04:20,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:20,471 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:20,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:20,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:20,684 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:04:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1684513274, now seen corresponding path program 1 times [2022-11-18 20:04:20,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:20,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894161784] [2022-11-18 20:04:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:20,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:20,782 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:04:20,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178169022] [2022-11-18 20:04:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:20,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:20,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:20,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:20,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:04:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:21,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:04:21,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2022-11-18 20:04:21,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:04:21,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:21,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894161784] [2022-11-18 20:04:21,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:04:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178169022] [2022-11-18 20:04:21,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178169022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:21,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:21,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:04:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58254159] [2022-11-18 20:04:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:04:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:04:21,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:04:21,818 INFO L87 Difference]: Start difference. First operand 417 states and 469 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:04:22,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:22,057 INFO L93 Difference]: Finished difference Result 422 states and 480 transitions. [2022-11-18 20:04:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:04:22,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 145 [2022-11-18 20:04:22,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:22,060 INFO L225 Difference]: With dead ends: 422 [2022-11-18 20:04:22,060 INFO L226 Difference]: Without dead ends: 422 [2022-11-18 20:04:22,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:04:22,061 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 84 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:22,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 366 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:04:22,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-18 20:04:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 416. [2022-11-18 20:04:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 309 states have (on average 1.3592233009708738) internal successors, (420), 387 states have internal predecessors, (420), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (27), 21 states have call predecessors, (27), 21 states have call successors, (27) [2022-11-18 20:04:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 468 transitions. [2022-11-18 20:04:22,101 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 468 transitions. Word has length 145 [2022-11-18 20:04:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:22,102 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 468 transitions. [2022-11-18 20:04:22,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:04:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 468 transitions. [2022-11-18 20:04:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-18 20:04:22,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:22,105 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:22,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:22,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:22,317 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:04:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1015592991, now seen corresponding path program 1 times [2022-11-18 20:04:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:22,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143144511] [2022-11-18 20:04:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:22,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:22,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:04:22,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293516722] [2022-11-18 20:04:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:22,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:22,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:22,406 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:22,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:04:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:23,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-18 20:04:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:23,937 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:04:23,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:04:24,489 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 20:04:24,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 20:04:25,209 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-18 20:04:25,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-18 20:04:25,404 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10858 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_10858))) is different from true [2022-11-18 20:04:25,767 INFO L321 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2022-11-18 20:04:25,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2022-11-18 20:04:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 732 proven. 1132 refuted. 0 times theorem prover too weak. 397 trivial. 4 not checked. [2022-11-18 20:04:26,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:26,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:26,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143144511] [2022-11-18 20:04:26,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:04:26,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293516722] [2022-11-18 20:04:26,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293516722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:26,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:04:26,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-18 20:04:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211114288] [2022-11-18 20:04:26,925 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:26,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:04:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:04:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=753, Unknown=1, NotChecked=56, Total=930 [2022-11-18 20:04:26,928 INFO L87 Difference]: Start difference. First operand 416 states and 468 transitions. Second operand has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:04:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:28,190 INFO L93 Difference]: Finished difference Result 637 states and 754 transitions. [2022-11-18 20:04:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:04:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 149 [2022-11-18 20:04:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:28,194 INFO L225 Difference]: With dead ends: 637 [2022-11-18 20:04:28,195 INFO L226 Difference]: Without dead ends: 637 [2022-11-18 20:04:28,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=137, Invalid=858, Unknown=1, NotChecked=60, Total=1056 [2022-11-18 20:04:28,196 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 272 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1759 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:28,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 3141 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 939 Invalid, 0 Unknown, 1759 Unchecked, 1.1s Time] [2022-11-18 20:04:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-18 20:04:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 492. [2022-11-18 20:04:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 373 states have (on average 1.3404825737265416) internal successors, (500), 451 states have internal predecessors, (500), 33 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (43), 33 states have call predecessors, (43), 33 states have call successors, (43) [2022-11-18 20:04:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 576 transitions. [2022-11-18 20:04:28,215 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 576 transitions. Word has length 149 [2022-11-18 20:04:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:28,216 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 576 transitions. [2022-11-18 20:04:28,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:04:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 576 transitions. [2022-11-18 20:04:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-18 20:04:28,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:28,218 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:28,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:28,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:28,431 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:04:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1015592990, now seen corresponding path program 1 times [2022-11-18 20:04:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:28,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695209426] [2022-11-18 20:04:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:28,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:28,509 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:04:28,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714373357] [2022-11-18 20:04:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:28,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:28,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:28,511 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:28,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:04:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:29,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 158 conjunts are in the unsatisfiable core [2022-11-18 20:04:29,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:29,839 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 [2022-11-18 20:04:29,862 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 [2022-11-18 20:04:38,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:04:38,716 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 22 treesize of output 24 [2022-11-18 20:04:38,818 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:04:38,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:04:42,289 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 20:04:42,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 20:04:42,384 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 22 treesize of output 24 [2022-11-18 20:04:47,815 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:04:47,816 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 22 treesize of output 28 [2022-11-18 20:04:48,316 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:04:48,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 20:04:51,079 WARN L859 $PredicateComparison]: unable to prove that (or (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0) (exists ((v_ArrVal_11675 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (<= 0 v_ArrVal_11675) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11675))))) (exists ((v_ArrVal_11675 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_11675) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11675))))) is different from true [2022-11-18 20:04:55,671 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11675 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int)) (let ((.cse0 (+ (* |aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296) |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|))) (and (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= (mod (* (div .cse0 |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_11675) (< 8 |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|) (= (mod .cse0 |zalloc_or_die_calloc_model_~size#1|) 0) (< |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11675))))) is different from true [2022-11-18 20:05:01,703 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:05:01,703 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 22 treesize of output 28 [2022-11-18 20:05:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 139 proven. 1262 refuted. 0 times theorem prover too weak. 188 trivial. 676 not checked. [2022-11-18 20:05:18,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:26,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:26,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695209426] [2022-11-18 20:05:26,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:05:26,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714373357] [2022-11-18 20:05:26,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714373357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:26,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:05:26,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2022-11-18 20:05:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369723029] [2022-11-18 20:05:26,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 20:05:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 20:05:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2795, Unknown=16, NotChecked=214, Total=3192 [2022-11-18 20:05:26,818 INFO L87 Difference]: Start difference. First operand 492 states and 576 transitions. Second operand has 55 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:05:27,076 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|zalloc_or_die_calloc_model_~size#1| Int)) (and (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) (select |c_#length| |c_zalloc_or_die_calloc_model_~ptr~0#1.base|)) (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)))) (= (select |c_#valid| |c_zalloc_or_die_calloc_model_~ptr~0#1.base|) 1) (= |c_zalloc_or_die_calloc_model_~ptr~0#1.offset| 0) (= (select |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base|) 0) (exists ((v_ArrVal_11673 Int)) (= (store |c_old(#length)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_11673) |c_#length|)) (exists ((v_ArrVal_11672 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_11672))) (or (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0) (exists ((v_ArrVal_11675 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (<= 0 v_ArrVal_11675) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11675))))) (exists ((v_ArrVal_11675 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_11675) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11675)))))) is different from true [2022-11-18 20:06:02,706 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|zalloc_or_die_calloc_model_~size#1| Int)) (and (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) (select |c_#length| |c_zalloc_or_die_calloc_model_~ptr~0#1.base|)) (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)))) (= (select |c_#valid| |c_zalloc_or_die_calloc_model_~ptr~0#1.base|) 1) (= |c_zalloc_or_die_calloc_model_~ptr~0#1.offset| 0) (or (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0) (exists ((v_ArrVal_11675 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (<= 0 v_ArrVal_11675) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11675))))) (exists ((v_ArrVal_11675 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_11675) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11675)))))) is different from true [2022-11-18 20:06:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:31,384 INFO L93 Difference]: Finished difference Result 650 states and 757 transitions. [2022-11-18 20:06:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 20:06:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 149 [2022-11-18 20:06:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:31,395 INFO L225 Difference]: With dead ends: 650 [2022-11-18 20:06:31,395 INFO L226 Difference]: Without dead ends: 650 [2022-11-18 20:06:31,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 98.4s TimeCoverageRelationStatistics Valid=418, Invalid=7936, Unknown=34, NotChecked=732, Total=9120 [2022-11-18 20:06:31,399 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 251 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 9014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7545 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:31,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 2765 Invalid, 9014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1459 Invalid, 0 Unknown, 7545 Unchecked, 1.7s Time] [2022-11-18 20:06:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-18 20:06:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 540. [2022-11-18 20:06:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 418 states have (on average 1.3110047846889952) internal successors, (548), 497 states have internal predecessors, (548), 33 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (43), 33 states have call predecessors, (43), 33 states have call successors, (43) [2022-11-18 20:06:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 624 transitions. [2022-11-18 20:06:31,417 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 624 transitions. Word has length 149 [2022-11-18 20:06:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:31,417 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 624 transitions. [2022-11-18 20:06:31,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:06:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 624 transitions. [2022-11-18 20:06:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:06:31,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:31,419 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:31,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:31,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:31,632 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:06:31,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:31,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1418611594, now seen corresponding path program 1 times [2022-11-18 20:06:31,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:31,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226920156] [2022-11-18 20:06:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:31,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:31,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169855421] [2022-11-18 20:06:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:31,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:31,731 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:31,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:06:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:32,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:06:32,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2022-11-18 20:06:32,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:32,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:32,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226920156] [2022-11-18 20:06:32,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:32,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169855421] [2022-11-18 20:06:32,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169855421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:32,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:32,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575232673] [2022-11-18 20:06:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:32,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:32,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:32,867 INFO L87 Difference]: Start difference. First operand 540 states and 624 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:06:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:33,079 INFO L93 Difference]: Finished difference Result 548 states and 638 transitions. [2022-11-18 20:06:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:06:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2022-11-18 20:06:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:33,082 INFO L225 Difference]: With dead ends: 548 [2022-11-18 20:06:33,083 INFO L226 Difference]: Without dead ends: 548 [2022-11-18 20:06:33,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:33,083 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 141 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:33,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 534 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-11-18 20:06:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 539. [2022-11-18 20:06:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 418 states have (on average 1.3086124401913874) internal successors, (547), 496 states have internal predecessors, (547), 33 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (43), 33 states have call predecessors, (43), 33 states have call successors, (43) [2022-11-18 20:06:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 623 transitions. [2022-11-18 20:06:33,098 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 623 transitions. Word has length 150 [2022-11-18 20:06:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:33,098 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 623 transitions. [2022-11-18 20:06:33,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:06:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 623 transitions. [2022-11-18 20:06:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:06:33,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:33,100 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:33,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:33,307 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:06:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1418611593, now seen corresponding path program 1 times [2022-11-18 20:06:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:33,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470214903] [2022-11-18 20:06:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:33,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:33,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:33,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453074989] [2022-11-18 20:06:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:33,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:33,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:33,373 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:33,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:06:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:06:34,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 176 proven. 372 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2022-11-18 20:06:34,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:34,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:06:34,886 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 20 treesize of output 24 [2022-11-18 20:06:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 176 proven. 372 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2022-11-18 20:06:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470214903] [2022-11-18 20:06:35,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:35,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453074989] [2022-11-18 20:06:35,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453074989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:35,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:35,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 20:06:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498698812] [2022-11-18 20:06:35,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:35,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:06:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:06:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:06:35,409 INFO L87 Difference]: Start difference. First operand 539 states and 623 transitions. Second operand has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:06:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:36,075 INFO L93 Difference]: Finished difference Result 547 states and 637 transitions. [2022-11-18 20:06:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:06:36,079 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 150 [2022-11-18 20:06:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:36,091 INFO L225 Difference]: With dead ends: 547 [2022-11-18 20:06:36,095 INFO L226 Difference]: Without dead ends: 547 [2022-11-18 20:06:36,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:06:36,096 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 392 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:36,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 2162 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:06:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-18 20:06:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 538. [2022-11-18 20:06:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 418 states have (on average 1.30622009569378) internal successors, (546), 495 states have internal predecessors, (546), 33 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (43), 33 states have call predecessors, (43), 33 states have call successors, (43) [2022-11-18 20:06:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 622 transitions. [2022-11-18 20:06:36,111 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 622 transitions. Word has length 150 [2022-11-18 20:06:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:36,112 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 622 transitions. [2022-11-18 20:06:36,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:06:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 622 transitions. [2022-11-18 20:06:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 20:06:36,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:36,114 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:36,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:36,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:06:36,325 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:06:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1781107145, now seen corresponding path program 1 times [2022-11-18 20:06:36,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:36,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997151698] [2022-11-18 20:06:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:36,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:36,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:36,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960427822] [2022-11-18 20:06:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:36,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:36,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:36,403 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:36,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:06:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:06:37,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2022-11-18 20:06:37,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:37,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:37,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997151698] [2022-11-18 20:06:37,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:37,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960427822] [2022-11-18 20:06:37,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960427822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:37,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:37,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:37,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142568656] [2022-11-18 20:06:37,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:37,501 INFO L87 Difference]: Start difference. First operand 538 states and 622 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:06:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:37,654 INFO L93 Difference]: Finished difference Result 541 states and 629 transitions. [2022-11-18 20:06:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 152 [2022-11-18 20:06:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:37,657 INFO L225 Difference]: With dead ends: 541 [2022-11-18 20:06:37,657 INFO L226 Difference]: Without dead ends: 541 [2022-11-18 20:06:37,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:37,658 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 39 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:37,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 400 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:06:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-18 20:06:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 537. [2022-11-18 20:06:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 418 states have (on average 1.3038277511961722) internal successors, (545), 494 states have internal predecessors, (545), 33 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (43), 33 states have call predecessors, (43), 33 states have call successors, (43) [2022-11-18 20:06:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 621 transitions. [2022-11-18 20:06:37,672 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 621 transitions. Word has length 152 [2022-11-18 20:06:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:37,673 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 621 transitions. [2022-11-18 20:06:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:06:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 621 transitions. [2022-11-18 20:06:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 20:06:37,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:37,675 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:37,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:37,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:06:37,886 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:06:37,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:37,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1781107144, now seen corresponding path program 1 times [2022-11-18 20:06:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:37,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905917520] [2022-11-18 20:06:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:37,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:37,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637991467] [2022-11-18 20:06:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:37,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:37,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:37,959 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:37,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:06:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:39,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:06:39,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2022-11-18 20:06:39,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:39,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905917520] [2022-11-18 20:06:39,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:39,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637991467] [2022-11-18 20:06:39,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637991467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:39,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:39,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:39,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990429289] [2022-11-18 20:06:39,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:39,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:39,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:39,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:39,165 INFO L87 Difference]: Start difference. First operand 537 states and 621 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:06:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:39,345 INFO L93 Difference]: Finished difference Result 540 states and 628 transitions. [2022-11-18 20:06:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:39,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 152 [2022-11-18 20:06:39,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:39,347 INFO L225 Difference]: With dead ends: 540 [2022-11-18 20:06:39,347 INFO L226 Difference]: Without dead ends: 540 [2022-11-18 20:06:39,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:39,348 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 68 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:39,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 372 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-18 20:06:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2022-11-18 20:06:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 418 states have (on average 1.3014354066985645) internal successors, (544), 493 states have internal predecessors, (544), 33 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (43), 33 states have call predecessors, (43), 33 states have call successors, (43) [2022-11-18 20:06:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 620 transitions. [2022-11-18 20:06:39,364 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 620 transitions. Word has length 152 [2022-11-18 20:06:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:39,365 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 620 transitions. [2022-11-18 20:06:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:06:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 620 transitions. [2022-11-18 20:06:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 20:06:39,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:39,367 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:39,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:06:39,579 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:06:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1020273311, now seen corresponding path program 1 times [2022-11-18 20:06:39,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:39,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764043932] [2022-11-18 20:06:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:39,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:39,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:39,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742155492] [2022-11-18 20:06:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:39,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:39,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:39,668 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:39,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:06:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:06:40,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:41,362 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:06:41,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:06:41,452 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15748 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_15748)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 20:06:41,604 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 20:06:41,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 20:06:41,680 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15749 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_15749))) is different from true [2022-11-18 20:06:41,716 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15749 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_15749))) is different from true [2022-11-18 20:06:41,722 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15749 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_15749))) is different from true [2022-11-18 20:06:41,727 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15749 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_15749))) is different from true [2022-11-18 20:06:41,771 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 20:06:41,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-18 20:06:41,942 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15750 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_15750))) is different from true [2022-11-18 20:06:41,979 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15750 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_15750))) is different from true [2022-11-18 20:06:41,985 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15750 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_15750))) is different from true [2022-11-18 20:06:41,991 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15750 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_15750))) is different from true [2022-11-18 20:06:42,052 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-18 20:06:42,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 52 [2022-11-18 20:06:42,495 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15751 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_15751))) is different from true [2022-11-18 20:06:42,861 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-18 20:06:42,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 62 [2022-11-18 20:06:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 5 proven. 478 refuted. 0 times theorem prover too weak. 400 trivial. 1382 not checked. [2022-11-18 20:06:45,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:45,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:45,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764043932] [2022-11-18 20:06:45,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:45,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742155492] [2022-11-18 20:06:45,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742155492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:45,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:45,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-18 20:06:45,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515398114] [2022-11-18 20:06:45,839 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:45,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:06:45,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:06:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=446, Unknown=11, NotChecked=510, Total=1056 [2022-11-18 20:06:45,841 INFO L87 Difference]: Start difference. First operand 536 states and 620 transitions. Second operand has 30 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 25 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:06:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:47,078 INFO L93 Difference]: Finished difference Result 848 states and 1033 transitions. [2022-11-18 20:06:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:06:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 25 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 156 [2022-11-18 20:06:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:47,084 INFO L225 Difference]: With dead ends: 848 [2022-11-18 20:06:47,084 INFO L226 Difference]: Without dead ends: 848 [2022-11-18 20:06:47,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=124, Invalid=717, Unknown=11, NotChecked=630, Total=1482 [2022-11-18 20:06:47,085 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 291 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4814 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:47,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 2443 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 818 Invalid, 0 Unknown, 4814 Unchecked, 0.9s Time] [2022-11-18 20:06:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-18 20:06:47,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 705. [2022-11-18 20:06:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 562 states have (on average 1.2882562277580072) internal successors, (724), 637 states have internal predecessors, (724), 58 states have call successors, (58), 9 states have call predecessors, (58), 11 states have return successors, (77), 58 states have call predecessors, (77), 58 states have call successors, (77) [2022-11-18 20:06:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 859 transitions. [2022-11-18 20:06:47,120 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 859 transitions. Word has length 156 [2022-11-18 20:06:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:47,123 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 859 transitions. [2022-11-18 20:06:47,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 25 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:06:47,124 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 859 transitions. [2022-11-18 20:06:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 20:06:47,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:47,125 INFO L195 NwaCegarLoop]: trace histogram [60, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:47,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:47,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:06:47,337 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:06:47,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1020273312, now seen corresponding path program 1 times [2022-11-18 20:06:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:47,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379188482] [2022-11-18 20:06:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:47,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:47,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:47,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567916138] [2022-11-18 20:06:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:47,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:47,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:47,412 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:47,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:06:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:49,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 188 conjunts are in the unsatisfiable core [2022-11-18 20:06:49,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:49,493 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 [2022-11-18 20:06:49,506 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 [2022-11-18 20:06:57,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:57,568 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 22 treesize of output 24 [2022-11-18 20:06:57,593 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:06:57,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:06:58,967 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_16586 Int)) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_16586)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 20:06:59,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:59,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:06:59,159 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 20:06:59,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:07:02,184 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:07:02,184 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 22 treesize of output 28 [2022-11-18 20:07:21,506 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:07:21,506 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 46 treesize of output 52 [2022-11-18 20:07:43,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:44,049 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 20:07:44,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 73 [2022-11-18 20:07:44,368 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:07:44,368 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 11 treesize of output 11 [2022-11-18 20:08:17,984 WARN L233 SmtUtils]: Spent 22.37s on a formula simplification. DAG size of input: 84 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:08:48,893 WARN L233 SmtUtils]: Spent 18.65s on a formula simplification. DAG size of input: 77 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:09:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 95 proven. 1444 refuted. 0 times theorem prover too weak. 178 trivial. 548 not checked. [2022-11-18 20:09:08,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:19,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:19,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379188482] [2022-11-18 20:09:19,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:09:19,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567916138] [2022-11-18 20:09:19,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567916138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:19,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:09:19,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2022-11-18 20:09:19,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163089598] [2022-11-18 20:09:19,501 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:19,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 20:09:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:19,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 20:09:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4027, Unknown=61, NotChecked=128, Total=4422 [2022-11-18 20:09:19,503 INFO L87 Difference]: Start difference. First operand 705 states and 859 transitions. Second operand has 63 states, 60 states have (on average 1.8833333333333333) internal successors, (113), 57 states have internal predecessors, (113), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:10:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:01,078 INFO L93 Difference]: Finished difference Result 914 states and 1126 transitions. [2022-11-18 20:10:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:10:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 60 states have (on average 1.8833333333333333) internal successors, (113), 57 states have internal predecessors, (113), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 156 [2022-11-18 20:10:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:01,083 INFO L225 Difference]: With dead ends: 914 [2022-11-18 20:10:01,083 INFO L226 Difference]: Without dead ends: 914 [2022-11-18 20:10:01,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 158.4s TimeCoverageRelationStatistics Valid=361, Invalid=6718, Unknown=65, NotChecked=166, Total=7310 [2022-11-18 20:10:01,086 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 252 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 12751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12386 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:01,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 3521 Invalid, 12751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 353 Invalid, 0 Unknown, 12386 Unchecked, 0.8s Time] [2022-11-18 20:10:01,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-11-18 20:10:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 788. [2022-11-18 20:10:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 635 states have (on average 1.2692913385826772) internal successors, (806), 709 states have internal predecessors, (806), 67 states have call successors, (67), 10 states have call predecessors, (67), 12 states have return successors, (89), 68 states have call predecessors, (89), 67 states have call successors, (89) [2022-11-18 20:10:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 962 transitions. [2022-11-18 20:10:01,109 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 962 transitions. Word has length 156 [2022-11-18 20:10:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:01,109 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 962 transitions. [2022-11-18 20:10:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 60 states have (on average 1.8833333333333333) internal successors, (113), 57 states have internal predecessors, (113), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:10:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 962 transitions. [2022-11-18 20:10:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-18 20:10:01,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:01,111 INFO L195 NwaCegarLoop]: trace histogram [61, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:01,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:01,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:01,332 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2022-11-18 20:10:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:01,332 INFO L85 PathProgramCache]: Analyzing trace with hash 939594989, now seen corresponding path program 2 times [2022-11-18 20:10:01,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:01,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722697540] [2022-11-18 20:10:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:01,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:01,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:10:01,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454011177] [2022-11-18 20:10:01,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:10:01,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:01,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:01,400 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:01,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e89bc25-ef05-4f3e-a8e2-be968401bd01/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:10:04,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:10:04,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:04,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 242 conjunts are in the unsatisfiable core [2022-11-18 20:10:04,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:04,680 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 [2022-11-18 20:10:04,703 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 [2022-11-18 20:10:12,265 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:10:12,266 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 22 treesize of output 28 [2022-11-18 20:10:14,653 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:10:14,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:10:17,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:17,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:10:18,118 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 20:10:18,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 20:10:35,961 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:10:35,963 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 22 treesize of output 28 [2022-11-18 20:10:36,630 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-18 20:10:36,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-18 20:10:41,670 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_17440 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_17440))) (or (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0) (exists ((v_ArrVal_17441 Int)) (and (= |c_#length| (store |c_old(#length)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_17441)) (<= v_ArrVal_17441 0)))) (exists ((v_ArrVal_17441 Int) (|zalloc_or_die_calloc_model_~size#1| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (= |c_#length| (store |c_old(#length)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_17441)) (<= v_ArrVal_17441 (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296))))) (<= 0 |c_zalloc_or_die_calloc_model_~ptr~0#1.offset|) (= (select |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base|) 0) (= |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_calloc_model_~ptr~0#1.base|)) is different from true [2022-11-18 20:10:44,166 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 20:10:44,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 54 [2022-11-18 20:10:45,567 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 20:10:45,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-11-18 20:11:17,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:17,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:17,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:17,107 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-18 20:11:17,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 60 [2022-11-18 20:11:17,430 INFO L321 Elim1Store]: treesize reduction 36, result has 36.8 percent of original size [2022-11-18 20:11:17,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 31 treesize of output 39 [2022-11-18 20:11:25,124 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)