./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:32:11,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:32:11,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:32:11,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:32:11,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:32:11,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:32:11,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:32:11,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:32:11,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:32:11,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:32:11,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:32:11,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:32:11,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:32:11,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:32:11,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:32:11,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:32:11,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:32:11,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:32:11,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:32:11,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:32:11,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:32:11,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:32:11,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:32:11,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:32:11,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:32:11,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:32:11,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:32:11,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:32:11,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:32:11,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:32:11,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:32:11,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:32:11,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:32:11,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:32:11,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:32:11,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:32:11,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:32:11,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:32:11,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:32:11,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:32:11,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:32:11,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 10:32:11,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:32:11,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:32:11,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:32:11,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:32:11,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:32:11,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:32:11,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:32:11,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:32:11,317 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:32:11,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:32:11,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:32:11,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:32:11,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:32:11,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:32:11,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:32:11,319 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:32:11,319 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:32:11,320 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:32:11,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:32:11,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:32:11,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:32:11,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:32:11,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:32:11,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:32:11,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:32:11,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:11,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:32:11,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:32:11,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:32:11,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:32:11,323 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_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2022-11-20 10:32:11,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:32:11,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:32:11,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:32:11,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:32:11,664 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:32:11,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-20 10:32:14,716 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:32:14,963 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:32:14,968 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-20 10:32:14,983 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/data/37c426643/71ef8925454047c98f9a99488fbeed5b/FLAGe8f20e3aa [2022-11-20 10:32:15,003 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/data/37c426643/71ef8925454047c98f9a99488fbeed5b [2022-11-20 10:32:15,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:32:15,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:32:15,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:15,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:32:15,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:32:15,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2786be89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15, skipping insertion in model container [2022-11-20 10:32:15,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:32:15,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:32:15,561 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-20 10:32:15,567 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-20 10:32:15,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-20 10:32:15,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:15,592 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:32:15,628 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-20 10:32:15,630 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-20 10:32:15,633 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-20 10:32:15,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:15,675 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:32:15,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15 WrapperNode [2022-11-20 10:32:15,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:15,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:15,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:32:15,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:32:15,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,766 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-11-20 10:32:15,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:15,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:32:15,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:32:15,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:32:15,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:32:15,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:32:15,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:32:15,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:32:15,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (1/1) ... [2022-11-20 10:32:15,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:15,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:15,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:32:15,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 10:32:15,888 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 10:32:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 10:32:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 10:32:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:32:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:32:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:32:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:32:15,896 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:32:16,172 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:32:16,174 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:32:16,584 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:32:16,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:32:16,592 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:32:16,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:16 BoogieIcfgContainer [2022-11-20 10:32:16,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:32:16,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:32:16,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:32:16,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:32:16,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:32:15" (1/3) ... [2022-11-20 10:32:16,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccdf934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:16, skipping insertion in model container [2022-11-20 10:32:16,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:15" (2/3) ... [2022-11-20 10:32:16,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccdf934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:16, skipping insertion in model container [2022-11-20 10:32:16,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:16" (3/3) ... [2022-11-20 10:32:16,604 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-11-20 10:32:16,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:32:16,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 10:32:16,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:32:16,777 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:32:16,810 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 10:32:16,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 174 transitions, 364 flow [2022-11-20 10:32:16,827 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 174 transitions, 364 flow [2022-11-20 10:32:16,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 174 transitions, 364 flow [2022-11-20 10:32:16,896 INFO L130 PetriNetUnfolder]: 11/172 cut-off events. [2022-11-20 10:32:16,896 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:32:16,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 11/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 359 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2022-11-20 10:32:16,907 INFO L119 LiptonReduction]: Number of co-enabled transitions 6010 [2022-11-20 10:32:40,721 INFO L134 LiptonReduction]: Checked pairs total: 13336 [2022-11-20 10:32:40,721 INFO L136 LiptonReduction]: Total number of compositions: 183 [2022-11-20 10:32:40,730 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 51 transitions, 118 flow [2022-11-20 10:32:40,802 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 730 states, 650 states have (on average 3.4553846153846153) internal successors, (2246), 729 states have internal predecessors, (2246), 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) [2022-11-20 10:32:40,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:32:40,827 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;@7cae9002, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:32:40,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 10:32:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 730 states, 650 states have (on average 3.4553846153846153) internal successors, (2246), 729 states have internal predecessors, (2246), 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) [2022-11-20 10:32:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 10:32:40,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:40,837 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 10:32:40,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:40,843 INFO L85 PathProgramCache]: Analyzing trace with hash 703, now seen corresponding path program 1 times [2022-11-20 10:32:40,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:40,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789437211] [2022-11-20 10:32:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:40,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:40,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:40,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789437211] [2022-11-20 10:32:40,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789437211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:40,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:40,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 10:32:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511475385] [2022-11-20 10:32:40,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:41,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:32:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:32:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:32:41,036 INFO L87 Difference]: Start difference. First operand has 730 states, 650 states have (on average 3.4553846153846153) internal successors, (2246), 729 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-20 10:32:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:41,189 INFO L93 Difference]: Finished difference Result 676 states and 1988 transitions. [2022-11-20 10:32:41,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:32:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-20 10:32:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:41,220 INFO L225 Difference]: With dead ends: 676 [2022-11-20 10:32:41,220 INFO L226 Difference]: Without dead ends: 676 [2022-11-20 10:32:41,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:32:41,226 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:41,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-11-20 10:32:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2022-11-20 10:32:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 612 states have (on average 3.2483660130718954) internal successors, (1988), 675 states have internal predecessors, (1988), 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) [2022-11-20 10:32:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1988 transitions. [2022-11-20 10:32:41,339 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1988 transitions. Word has length 1 [2022-11-20 10:32:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:41,339 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1988 transitions. [2022-11-20 10:32:41,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-20 10:32:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1988 transitions. [2022-11-20 10:32:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:32:41,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:41,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:32:41,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:32:41,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash 692281, now seen corresponding path program 1 times [2022-11-20 10:32:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:41,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781630754] [2022-11-20 10:32:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:41,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:41,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781630754] [2022-11-20 10:32:41,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781630754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:41,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:41,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:32:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19295385] [2022-11-20 10:32:41,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:41,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:41,579 INFO L87 Difference]: Start difference. First operand 676 states and 1988 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 10:32:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:41,698 INFO L93 Difference]: Finished difference Result 652 states and 1936 transitions. [2022-11-20 10:32:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:41,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-20 10:32:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:41,712 INFO L225 Difference]: With dead ends: 652 [2022-11-20 10:32:41,712 INFO L226 Difference]: Without dead ends: 652 [2022-11-20 10:32:41,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:41,716 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:41,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-20 10:32:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2022-11-20 10:32:41,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 596 states have (on average 3.248322147651007) internal successors, (1936), 651 states have internal predecessors, (1936), 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) [2022-11-20 10:32:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1936 transitions. [2022-11-20 10:32:41,746 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1936 transitions. Word has length 3 [2022-11-20 10:32:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:41,747 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1936 transitions. [2022-11-20 10:32:41,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 10:32:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1936 transitions. [2022-11-20 10:32:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:32:41,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:41,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:32:41,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:32:41,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash 692282, now seen corresponding path program 1 times [2022-11-20 10:32:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:41,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389768037] [2022-11-20 10:32:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389768037] [2022-11-20 10:32:41,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389768037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:41,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:41,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:32:41,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703301591] [2022-11-20 10:32:41,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:41,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:41,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:41,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:41,907 INFO L87 Difference]: Start difference. First operand 652 states and 1936 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 10:32:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:42,006 INFO L93 Difference]: Finished difference Result 628 states and 1884 transitions. [2022-11-20 10:32:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:42,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-20 10:32:42,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:42,015 INFO L225 Difference]: With dead ends: 628 [2022-11-20 10:32:42,015 INFO L226 Difference]: Without dead ends: 628 [2022-11-20 10:32:42,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:42,022 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:42,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-20 10:32:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-11-20 10:32:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 580 states have (on average 3.2482758620689656) internal successors, (1884), 627 states have internal predecessors, (1884), 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) [2022-11-20 10:32:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1884 transitions. [2022-11-20 10:32:42,056 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1884 transitions. Word has length 3 [2022-11-20 10:32:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:42,057 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1884 transitions. [2022-11-20 10:32:42,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-20 10:32:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1884 transitions. [2022-11-20 10:32:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:32:42,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:42,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:32:42,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:32:42,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash 665261865, now seen corresponding path program 1 times [2022-11-20 10:32:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:42,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76025145] [2022-11-20 10:32:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:42,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:42,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76025145] [2022-11-20 10:32:42,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76025145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:42,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:42,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:32:42,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288883498] [2022-11-20 10:32:42,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:42,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:42,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:42,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:42,323 INFO L87 Difference]: Start difference. First operand 628 states and 1884 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:42,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:42,416 INFO L93 Difference]: Finished difference Result 532 states and 1607 transitions. [2022-11-20 10:32:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:42,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:32:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:42,421 INFO L225 Difference]: With dead ends: 532 [2022-11-20 10:32:42,422 INFO L226 Difference]: Without dead ends: 532 [2022-11-20 10:32:42,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:42,424 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:42,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-20 10:32:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-11-20 10:32:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 505 states have (on average 3.1821782178217823) internal successors, (1607), 531 states have internal predecessors, (1607), 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) [2022-11-20 10:32:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1607 transitions. [2022-11-20 10:32:42,447 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1607 transitions. Word has length 5 [2022-11-20 10:32:42,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:42,449 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 1607 transitions. [2022-11-20 10:32:42,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1607 transitions. [2022-11-20 10:32:42,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:32:42,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:42,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:32:42,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:32:42,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash 665261866, now seen corresponding path program 1 times [2022-11-20 10:32:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:42,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736177673] [2022-11-20 10:32:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:42,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:42,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:42,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736177673] [2022-11-20 10:32:42,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736177673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:42,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:42,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:32:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087540612] [2022-11-20 10:32:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:42,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:42,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:42,804 INFO L87 Difference]: Start difference. First operand 532 states and 1607 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:42,962 INFO L93 Difference]: Finished difference Result 886 states and 2660 transitions. [2022-11-20 10:32:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:32:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:42,970 INFO L225 Difference]: With dead ends: 886 [2022-11-20 10:32:42,970 INFO L226 Difference]: Without dead ends: 886 [2022-11-20 10:32:42,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:42,972 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:42,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 8 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-11-20 10:32:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 856. [2022-11-20 10:32:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 829 states have (on average 3.170084439083233) internal successors, (2628), 855 states have internal predecessors, (2628), 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) [2022-11-20 10:32:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2628 transitions. [2022-11-20 10:32:43,011 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2628 transitions. Word has length 5 [2022-11-20 10:32:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:43,011 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 2628 transitions. [2022-11-20 10:32:43,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2628 transitions. [2022-11-20 10:32:43,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:32:43,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:43,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:32:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:32:43,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:43,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash 665296843, now seen corresponding path program 1 times [2022-11-20 10:32:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:43,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375394948] [2022-11-20 10:32:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:43,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375394948] [2022-11-20 10:32:43,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375394948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:43,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:43,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:32:43,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134116036] [2022-11-20 10:32:43,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:43,147 INFO L87 Difference]: Start difference. First operand 856 states and 2628 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:43,227 INFO L93 Difference]: Finished difference Result 662 states and 1966 transitions. [2022-11-20 10:32:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:43,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:32:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:43,233 INFO L225 Difference]: With dead ends: 662 [2022-11-20 10:32:43,233 INFO L226 Difference]: Without dead ends: 662 [2022-11-20 10:32:43,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:43,235 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:43,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 4 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-11-20 10:32:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-11-20 10:32:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 644 states have (on average 3.0527950310559007) internal successors, (1966), 661 states have internal predecessors, (1966), 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) [2022-11-20 10:32:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1966 transitions. [2022-11-20 10:32:43,260 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1966 transitions. Word has length 5 [2022-11-20 10:32:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:43,260 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1966 transitions. [2022-11-20 10:32:43,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1966 transitions. [2022-11-20 10:32:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:32:43,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:43,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:32:43,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:32:43,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash 665296844, now seen corresponding path program 1 times [2022-11-20 10:32:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:43,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338143241] [2022-11-20 10:32:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:43,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:43,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:43,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338143241] [2022-11-20 10:32:43,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338143241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:43,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:43,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:32:43,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639817753] [2022-11-20 10:32:43,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:43,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:43,360 INFO L87 Difference]: Start difference. First operand 662 states and 1966 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:43,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:43,433 INFO L93 Difference]: Finished difference Result 468 states and 1304 transitions. [2022-11-20 10:32:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:43,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:32:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:43,438 INFO L225 Difference]: With dead ends: 468 [2022-11-20 10:32:43,438 INFO L226 Difference]: Without dead ends: 468 [2022-11-20 10:32:43,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:43,439 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:43,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-20 10:32:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2022-11-20 10:32:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 459 states have (on average 2.840958605664488) internal successors, (1304), 467 states have internal predecessors, (1304), 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) [2022-11-20 10:32:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1304 transitions. [2022-11-20 10:32:43,458 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1304 transitions. Word has length 5 [2022-11-20 10:32:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:43,459 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 1304 transitions. [2022-11-20 10:32:43,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1304 transitions. [2022-11-20 10:32:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:32:43,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:43,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:32:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:32:43,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash -851717704, now seen corresponding path program 1 times [2022-11-20 10:32:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:43,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715564132] [2022-11-20 10:32:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:43,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:43,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:43,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715564132] [2022-11-20 10:32:43,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715564132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:43,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:43,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:32:43,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411315873] [2022-11-20 10:32:43,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:43,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:43,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:43,613 INFO L87 Difference]: Start difference. First operand 468 states and 1304 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:43,727 INFO L93 Difference]: Finished difference Result 406 states and 1096 transitions. [2022-11-20 10:32:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 10:32:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:43,730 INFO L225 Difference]: With dead ends: 406 [2022-11-20 10:32:43,730 INFO L226 Difference]: Without dead ends: 406 [2022-11-20 10:32:43,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:43,733 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:43,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-11-20 10:32:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 392. [2022-11-20 10:32:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 383 states have (on average 2.825065274151436) internal successors, (1082), 391 states have internal predecessors, (1082), 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) [2022-11-20 10:32:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1082 transitions. [2022-11-20 10:32:43,747 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1082 transitions. Word has length 6 [2022-11-20 10:32:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:43,748 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 1082 transitions. [2022-11-20 10:32:43,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1082 transitions. [2022-11-20 10:32:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:32:43,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:43,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:43,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:32:43,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:43,751 INFO L85 PathProgramCache]: Analyzing trace with hash -633456022, now seen corresponding path program 1 times [2022-11-20 10:32:43,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:43,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31486046] [2022-11-20 10:32:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:43,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049841658] [2022-11-20 10:32:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:43,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:43,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:43,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:32:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:43,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:32:43,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:43,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:43,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:43,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31486046] [2022-11-20 10:32:43,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:43,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049841658] [2022-11-20 10:32:43,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049841658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:43,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:43,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10452309] [2022-11-20 10:32:43,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:43,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:43,942 INFO L87 Difference]: Start difference. First operand 392 states and 1082 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:44,120 INFO L93 Difference]: Finished difference Result 440 states and 1208 transitions. [2022-11-20 10:32:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:32:44,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:44,123 INFO L225 Difference]: With dead ends: 440 [2022-11-20 10:32:44,124 INFO L226 Difference]: Without dead ends: 440 [2022-11-20 10:32:44,124 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 [2022-11-20 10:32:44,125 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:44,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 16 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:32:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-20 10:32:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 416. [2022-11-20 10:32:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 407 states have (on average 2.8132678132678133) internal successors, (1145), 415 states have internal predecessors, (1145), 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) [2022-11-20 10:32:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1145 transitions. [2022-11-20 10:32:44,140 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1145 transitions. Word has length 7 [2022-11-20 10:32:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:44,141 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 1145 transitions. [2022-11-20 10:32:44,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1145 transitions. [2022-11-20 10:32:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:32:44,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:44,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:44,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:44,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:44,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1415643751, now seen corresponding path program 1 times [2022-11-20 10:32:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:44,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895876754] [2022-11-20 10:32:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:44,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:44,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895876754] [2022-11-20 10:32:44,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895876754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:44,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:44,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:32:44,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157542149] [2022-11-20 10:32:44,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:44,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:44,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:44,421 INFO L87 Difference]: Start difference. First operand 416 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:44,521 INFO L93 Difference]: Finished difference Result 500 states and 1337 transitions. [2022-11-20 10:32:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:44,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 10:32:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:44,524 INFO L225 Difference]: With dead ends: 500 [2022-11-20 10:32:44,524 INFO L226 Difference]: Without dead ends: 492 [2022-11-20 10:32:44,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:44,525 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:44,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:44,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-20 10:32:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 452. [2022-11-20 10:32:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 441 states have (on average 2.81859410430839) internal successors, (1243), 451 states have internal predecessors, (1243), 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) [2022-11-20 10:32:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1243 transitions. [2022-11-20 10:32:44,541 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1243 transitions. Word has length 8 [2022-11-20 10:32:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:44,542 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1243 transitions. [2022-11-20 10:32:44,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1243 transitions. [2022-11-20 10:32:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:32:44,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:44,544 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:44,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:32:44,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:44,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:44,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1607997401, now seen corresponding path program 1 times [2022-11-20 10:32:44,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:44,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945544439] [2022-11-20 10:32:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:44,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:44,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:44,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597627069] [2022-11-20 10:32:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:44,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:44,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:44,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:44,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:32:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:32:44,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:44,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:32:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:44,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945544439] [2022-11-20 10:32:44,775 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597627069] [2022-11-20 10:32:44,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597627069] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:44,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:32:44,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-20 10:32:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114401709] [2022-11-20 10:32:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:44,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:32:44,778 INFO L87 Difference]: Start difference. First operand 452 states and 1243 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 10:32:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:44,879 INFO L93 Difference]: Finished difference Result 342 states and 882 transitions. [2022-11-20 10:32:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:44,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-11-20 10:32:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:44,881 INFO L225 Difference]: With dead ends: 342 [2022-11-20 10:32:44,881 INFO L226 Difference]: Without dead ends: 314 [2022-11-20 10:32:44,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:32:44,882 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:44,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-20 10:32:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 282. [2022-11-20 10:32:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 273 states have (on average 2.706959706959707) internal successors, (739), 281 states have internal predecessors, (739), 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) [2022-11-20 10:32:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 739 transitions. [2022-11-20 10:32:44,893 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 739 transitions. Word has length 12 [2022-11-20 10:32:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:44,894 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 739 transitions. [2022-11-20 10:32:44,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 10:32:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 739 transitions. [2022-11-20 10:32:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:32:44,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:44,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:44,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:32:45,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:32:45,105 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1328715630, now seen corresponding path program 1 times [2022-11-20 10:32:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:45,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425696561] [2022-11-20 10:32:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:45,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:45,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:45,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425696561] [2022-11-20 10:32:45,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425696561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:45,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:45,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:45,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814465504] [2022-11-20 10:32:45,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:45,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:45,152 INFO L87 Difference]: Start difference. First operand 282 states and 739 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:45,250 INFO L93 Difference]: Finished difference Result 354 states and 913 transitions. [2022-11-20 10:32:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:45,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:32:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:45,253 INFO L225 Difference]: With dead ends: 354 [2022-11-20 10:32:45,253 INFO L226 Difference]: Without dead ends: 354 [2022-11-20 10:32:45,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:45,254 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:45,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-20 10:32:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 282. [2022-11-20 10:32:45,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 273 states have (on average 2.67032967032967) internal successors, (729), 281 states have internal predecessors, (729), 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) [2022-11-20 10:32:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 729 transitions. [2022-11-20 10:32:45,266 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 729 transitions. Word has length 13 [2022-11-20 10:32:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:45,266 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 729 transitions. [2022-11-20 10:32:45,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 729 transitions. [2022-11-20 10:32:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:32:45,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:45,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:45,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:32:45,268 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash 877237455, now seen corresponding path program 1 times [2022-11-20 10:32:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001466801] [2022-11-20 10:32:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:45,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:45,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047245126] [2022-11-20 10:32:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:45,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:45,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:45,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:45,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:32:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:45,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:32:45,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:45,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 10:32:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:45,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001466801] [2022-11-20 10:32:45,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047245126] [2022-11-20 10:32:45,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047245126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:45,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:45,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248038144] [2022-11-20 10:32:45,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:45,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:45,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:45,494 INFO L87 Difference]: Start difference. First operand 282 states and 729 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:45,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:45,577 INFO L93 Difference]: Finished difference Result 204 states and 468 transitions. [2022-11-20 10:32:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:45,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 10:32:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:45,579 INFO L225 Difference]: With dead ends: 204 [2022-11-20 10:32:45,579 INFO L226 Difference]: Without dead ends: 192 [2022-11-20 10:32:45,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:45,579 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:45,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-20 10:32:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-20 10:32:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 2.379679144385027) internal successors, (445), 191 states have internal predecessors, (445), 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) [2022-11-20 10:32:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 445 transitions. [2022-11-20 10:32:45,587 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 445 transitions. Word has length 14 [2022-11-20 10:32:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:45,587 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 445 transitions. [2022-11-20 10:32:45,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 445 transitions. [2022-11-20 10:32:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:32:45,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:45,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:45,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:45,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:45,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2019169653, now seen corresponding path program 1 times [2022-11-20 10:32:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:45,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065079013] [2022-11-20 10:32:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:45,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:45,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:45,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696856402] [2022-11-20 10:32:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:45,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:45,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:45,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:45,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:32:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:45,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:32:45,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:46,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:46,026 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 15 treesize of output 19 [2022-11-20 10:32:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:46,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:46,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065079013] [2022-11-20 10:32:46,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696856402] [2022-11-20 10:32:46,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696856402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:46,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:46,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:32:46,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159810964] [2022-11-20 10:32:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:46,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:46,151 INFO L87 Difference]: Start difference. First operand 192 states and 445 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-11-20 10:32:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:46,263 INFO L93 Difference]: Finished difference Result 304 states and 707 transitions. [2022-11-20 10:32:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:46,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2022-11-20 10:32:46,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:46,265 INFO L225 Difference]: With dead ends: 304 [2022-11-20 10:32:46,265 INFO L226 Difference]: Without dead ends: 304 [2022-11-20 10:32:46,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:32:46,266 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:46,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:46,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-20 10:32:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 234. [2022-11-20 10:32:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 2.510917030567686) internal successors, (575), 233 states have internal predecessors, (575), 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) [2022-11-20 10:32:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 575 transitions. [2022-11-20 10:32:46,275 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 575 transitions. Word has length 15 [2022-11-20 10:32:46,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:46,275 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 575 transitions. [2022-11-20 10:32:46,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-11-20 10:32:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 575 transitions. [2022-11-20 10:32:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:32:46,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:46,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:46,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:46,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:32:46,483 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1327831629, now seen corresponding path program 1 times [2022-11-20 10:32:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354743260] [2022-11-20 10:32:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:46,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354743260] [2022-11-20 10:32:46,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354743260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:46,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801039523] [2022-11-20 10:32:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:46,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:46,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:46,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:46,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:32:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:46,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:32:46,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:46,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801039523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:46,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:32:46,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 10:32:46,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703203889] [2022-11-20 10:32:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:46,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:46,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:32:46,675 INFO L87 Difference]: Start difference. First operand 234 states and 575 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-20 10:32:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:46,778 INFO L93 Difference]: Finished difference Result 326 states and 779 transitions. [2022-11-20 10:32:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2022-11-20 10:32:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:46,781 INFO L225 Difference]: With dead ends: 326 [2022-11-20 10:32:46,781 INFO L226 Difference]: Without dead ends: 326 [2022-11-20 10:32:46,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:32:46,782 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:46,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-20 10:32:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 264. [2022-11-20 10:32:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 2.4787644787644787) internal successors, (642), 263 states have internal predecessors, (642), 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) [2022-11-20 10:32:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 642 transitions. [2022-11-20 10:32:46,791 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 642 transitions. Word has length 15 [2022-11-20 10:32:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:46,792 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 642 transitions. [2022-11-20 10:32:46,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-20 10:32:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 642 transitions. [2022-11-20 10:32:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:32:46,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:46,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:46,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:46,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:46,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1830250880, now seen corresponding path program 1 times [2022-11-20 10:32:47,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:47,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225938475] [2022-11-20 10:32:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:47,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:47,016 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:47,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193817723] [2022-11-20 10:32:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:47,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:47,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:47,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:47,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:32:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:47,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:32:47,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:47,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:47,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225938475] [2022-11-20 10:32:47,538 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:47,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193817723] [2022-11-20 10:32:47,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193817723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:47,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:47,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:32:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542775740] [2022-11-20 10:32:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:47,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:47,540 INFO L87 Difference]: Start difference. First operand 264 states and 642 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-11-20 10:32:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:47,692 INFO L93 Difference]: Finished difference Result 298 states and 674 transitions. [2022-11-20 10:32:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2022-11-20 10:32:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:47,694 INFO L225 Difference]: With dead ends: 298 [2022-11-20 10:32:47,694 INFO L226 Difference]: Without dead ends: 298 [2022-11-20 10:32:47,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:47,695 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:47,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-20 10:32:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 250. [2022-11-20 10:32:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 2.3959183673469386) internal successors, (587), 249 states have internal predecessors, (587), 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) [2022-11-20 10:32:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 587 transitions. [2022-11-20 10:32:47,706 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 587 transitions. Word has length 16 [2022-11-20 10:32:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:47,706 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 587 transitions. [2022-11-20 10:32:47,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-11-20 10:32:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 587 transitions. [2022-11-20 10:32:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:32:47,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:47,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:47,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:47,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 10:32:47,927 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash 903175339, now seen corresponding path program 1 times [2022-11-20 10:32:47,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:47,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749457530] [2022-11-20 10:32:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:47,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:47,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355404148] [2022-11-20 10:32:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:47,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:47,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:32:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:48,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 10:32:48,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:48,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:48,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:32:48,422 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:32:48,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:32:48,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:32:48,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-20 10:32:48,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 10:32:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:48,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:48,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:48,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749457530] [2022-11-20 10:32:48,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:48,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355404148] [2022-11-20 10:32:48,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355404148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:48,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:48,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:32:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448154896] [2022-11-20 10:32:48,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:32:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:32:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:32:48,884 INFO L87 Difference]: Start difference. First operand 250 states and 587 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-20 10:32:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:49,118 INFO L93 Difference]: Finished difference Result 322 states and 728 transitions. [2022-11-20 10:32:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:32:49,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2022-11-20 10:32:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:49,122 INFO L225 Difference]: With dead ends: 322 [2022-11-20 10:32:49,122 INFO L226 Difference]: Without dead ends: 322 [2022-11-20 10:32:49,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:49,123 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:49,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 24 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2022-11-20 10:32:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-20 10:32:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 262. [2022-11-20 10:32:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 2.377431906614786) internal successors, (611), 261 states have internal predecessors, (611), 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) [2022-11-20 10:32:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 611 transitions. [2022-11-20 10:32:49,136 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 611 transitions. Word has length 17 [2022-11-20 10:32:49,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:49,137 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 611 transitions. [2022-11-20 10:32:49,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-20 10:32:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 611 transitions. [2022-11-20 10:32:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:32:49,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:49,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:49,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:49,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:32:49,356 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:49,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:49,356 INFO L85 PathProgramCache]: Analyzing trace with hash -440966270, now seen corresponding path program 1 times [2022-11-20 10:32:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:49,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722662281] [2022-11-20 10:32:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:32:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:49,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722662281] [2022-11-20 10:32:49,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722662281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:49,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706067234] [2022-11-20 10:32:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:49,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:49,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:49,420 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:49,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:32:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:49,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:32:49,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:32:49,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:32:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:32:49,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706067234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:32:49,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:32:49,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 10:32:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117199604] [2022-11-20 10:32:49,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:32:49,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:32:49,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:32:49,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:32:49,624 INFO L87 Difference]: Start difference. First operand 262 states and 611 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-11-20 10:32:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:49,846 INFO L93 Difference]: Finished difference Result 536 states and 1201 transitions. [2022-11-20 10:32:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:32:49,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 17 [2022-11-20 10:32:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:49,850 INFO L225 Difference]: With dead ends: 536 [2022-11-20 10:32:49,850 INFO L226 Difference]: Without dead ends: 536 [2022-11-20 10:32:49,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:32:49,851 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 154 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:49,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 18 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:32:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-20 10:32:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 515. [2022-11-20 10:32:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 508 states have (on average 2.328740157480315) internal successors, (1183), 514 states have internal predecessors, (1183), 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) [2022-11-20 10:32:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1183 transitions. [2022-11-20 10:32:49,884 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1183 transitions. Word has length 17 [2022-11-20 10:32:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:49,885 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 1183 transitions. [2022-11-20 10:32:49,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-11-20 10:32:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1183 transitions. [2022-11-20 10:32:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:32:49,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:49,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:49,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:50,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 10:32:50,092 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2066335500, now seen corresponding path program 1 times [2022-11-20 10:32:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:50,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611634510] [2022-11-20 10:32:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:50,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:50,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:50,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908883425] [2022-11-20 10:32:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:50,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:50,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:50,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:32:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 10:32:50,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:50,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:50,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:32:50,442 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:32:50,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:32:50,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:32:50,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-20 10:32:50,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 10:32:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:50,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611634510] [2022-11-20 10:32:50,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908883425] [2022-11-20 10:32:50,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908883425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:50,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:50,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:32:50,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488600814] [2022-11-20 10:32:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:50,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:32:50,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:32:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:32:50,796 INFO L87 Difference]: Start difference. First operand 515 states and 1183 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-20 10:32:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:50,994 INFO L93 Difference]: Finished difference Result 571 states and 1294 transitions. [2022-11-20 10:32:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:32:50,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-20 10:32:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:50,997 INFO L225 Difference]: With dead ends: 571 [2022-11-20 10:32:50,998 INFO L226 Difference]: Without dead ends: 571 [2022-11-20 10:32:50,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:50,998 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:50,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 16 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-20 10:32:51,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-20 10:32:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 514. [2022-11-20 10:32:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 507 states have (on average 2.329388560157791) internal successors, (1181), 513 states have internal predecessors, (1181), 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) [2022-11-20 10:32:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1181 transitions. [2022-11-20 10:32:51,014 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1181 transitions. Word has length 18 [2022-11-20 10:32:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:51,015 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 1181 transitions. [2022-11-20 10:32:51,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-20 10:32:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1181 transitions. [2022-11-20 10:32:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:32:51,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:51,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:51,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:51,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:51,223 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1282220846, now seen corresponding path program 1 times [2022-11-20 10:32:51,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:51,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391105308] [2022-11-20 10:32:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:51,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:51,249 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:51,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117057397] [2022-11-20 10:32:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:51,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:51,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:51,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:51,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:32:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:51,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 10:32:51,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:51,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:51,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:51,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:51,545 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 15 treesize of output 19 [2022-11-20 10:32:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:51,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:32:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:52,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:52,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391105308] [2022-11-20 10:32:52,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:52,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117057397] [2022-11-20 10:32:52,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117057397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:32:52,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:32:52,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 10:32:52,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685616975] [2022-11-20 10:32:52,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:32:52,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:32:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:32:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:32:52,970 INFO L87 Difference]: Start difference. First operand 514 states and 1181 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2022-11-20 10:32:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:53,122 INFO L93 Difference]: Finished difference Result 602 states and 1348 transitions. [2022-11-20 10:32:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 22 [2022-11-20 10:32:53,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:53,125 INFO L225 Difference]: With dead ends: 602 [2022-11-20 10:32:53,125 INFO L226 Difference]: Without dead ends: 602 [2022-11-20 10:32:53,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:32:53,126 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:53,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 8 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-20 10:32:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 486. [2022-11-20 10:32:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 483 states have (on average 2.269151138716356) internal successors, (1096), 485 states have internal predecessors, (1096), 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) [2022-11-20 10:32:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1096 transitions. [2022-11-20 10:32:53,141 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1096 transitions. Word has length 22 [2022-11-20 10:32:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:53,141 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 1096 transitions. [2022-11-20 10:32:53,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2022-11-20 10:32:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1096 transitions. [2022-11-20 10:32:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 10:32:53,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:53,143 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:53,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:53,349 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1399439347, now seen corresponding path program 2 times [2022-11-20 10:32:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:53,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861989273] [2022-11-20 10:32:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 10:32:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:53,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861989273] [2022-11-20 10:32:53,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861989273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:53,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842919084] [2022-11-20 10:32:53,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:32:53,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:53,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:53,433 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:53,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:32:53,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:32:53,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:32:53,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:32:53,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:32:53,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842919084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:53,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:32:53,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-20 10:32:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666142816] [2022-11-20 10:32:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:32:53,787 INFO L87 Difference]: Start difference. First operand 486 states and 1096 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-11-20 10:32:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:53,812 INFO L93 Difference]: Finished difference Result 533 states and 1193 transitions. [2022-11-20 10:32:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 23 [2022-11-20 10:32:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:53,817 INFO L225 Difference]: With dead ends: 533 [2022-11-20 10:32:53,817 INFO L226 Difference]: Without dead ends: 422 [2022-11-20 10:32:53,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:32:53,818 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:53,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-20 10:32:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-20 10:32:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-20 10:32:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 419 states have (on average 2.2553699284009547) internal successors, (945), 421 states have internal predecessors, (945), 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) [2022-11-20 10:32:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 945 transitions. [2022-11-20 10:32:53,831 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 945 transitions. Word has length 23 [2022-11-20 10:32:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:53,832 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 945 transitions. [2022-11-20 10:32:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-11-20 10:32:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 945 transitions. [2022-11-20 10:32:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 10:32:53,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:53,835 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:53,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:54,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:54,041 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:54,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1106763194, now seen corresponding path program 1 times [2022-11-20 10:32:54,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:54,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999737976] [2022-11-20 10:32:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:54,060 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:54,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444782691] [2022-11-20 10:32:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:54,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:54,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:54,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:54,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:32:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:54,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:32:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:54,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:32:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:54,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:54,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999737976] [2022-11-20 10:32:54,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:32:54,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444782691] [2022-11-20 10:32:54,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444782691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:32:54,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:32:54,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 10:32:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116403703] [2022-11-20 10:32:54,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:32:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:32:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:32:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:54,403 INFO L87 Difference]: Start difference. First operand 422 states and 945 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 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) [2022-11-20 10:32:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:54,709 INFO L93 Difference]: Finished difference Result 658 states and 1453 transitions. [2022-11-20 10:32:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:32:54,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 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 24 [2022-11-20 10:32:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:54,713 INFO L225 Difference]: With dead ends: 658 [2022-11-20 10:32:54,713 INFO L226 Difference]: Without dead ends: 658 [2022-11-20 10:32:54,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:54,714 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 273 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:54,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 30 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:32:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-20 10:32:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 650. [2022-11-20 10:32:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 647 states have (on average 2.2395672333848533) internal successors, (1449), 649 states have internal predecessors, (1449), 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) [2022-11-20 10:32:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1449 transitions. [2022-11-20 10:32:54,734 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1449 transitions. Word has length 24 [2022-11-20 10:32:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:54,735 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1449 transitions. [2022-11-20 10:32:54,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 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) [2022-11-20 10:32:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1449 transitions. [2022-11-20 10:32:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 10:32:54,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:54,739 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:54,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:54,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:54,945 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:32:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:54,946 INFO L85 PathProgramCache]: Analyzing trace with hash -743217045, now seen corresponding path program 2 times [2022-11-20 10:32:54,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:54,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609066289] [2022-11-20 10:32:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:54,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:54,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:32:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11811054] [2022-11-20 10:32:54,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:32:54,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:54,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:54,967 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:54,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 10:32:55,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:32:55,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:32:55,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 10:32:55,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:55,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:55,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:32:55,203 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:32:55,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:32:55,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:32:55,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-20 10:32:55,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 10:32:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 10:32:55,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:05,915 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (<= 4294967296 aux_mod_v_~first~0_191_46) (= c_~value~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296)))))) (forall ((v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (< 2147483647 aux_mod_v_~first~0_191_46) (< aux_mod_v_~first~0_191_46 0) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296))) c_~value~0)))) is different from false [2022-11-20 10:33:10,381 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296)))) (<= 4294967296 aux_mod_v_~first~0_191_46))) (forall ((v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (< 2147483647 aux_mod_v_~first~0_191_46) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (< aux_mod_v_~first~0_191_46 0)))) is different from false [2022-11-20 10:33:10,873 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) (let ((.cse0 (<= .cse3 127)) (.cse1 (select |c_#memory_int| |c_~#buffer~0.base|))) (and (or .cse0 (let ((.cse2 (+ .cse3 (- 256)))) (and (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296)))) (< 2147483647 aux_mod_v_~first~0_191_46) (< aux_mod_v_~first~0_191_46 0))) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (<= 4294967296 aux_mod_v_~first~0_191_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|))) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (< 2147483647 aux_mod_v_~first~0_191_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (< aux_mod_v_~first~0_191_46 0))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (<= 4294967296 aux_mod_v_~first~0_191_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0)))))) (or (not .cse0) (and (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (< 2147483647 aux_mod_v_~first~0_191_46) (< aux_mod_v_~first~0_191_46 0) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296)))) (<= 4294967296 aux_mod_v_~first~0_191_46))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (< 2147483647 aux_mod_~next~0_24) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296)))) (<= 4294967296 aux_mod_v_~first~0_191_46))) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (< 2147483647 aux_mod_v_~first~0_191_46) (< aux_mod_v_~first~0_191_46 0) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296)))))) (<= 4294967296 aux_mod_~next~0_24)))))))) is different from false [2022-11-20 10:33:11,328 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_~#buffer~0.base|))) (and (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (< 2147483647 aux_mod_v_~first~0_191_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296))) 0) (< aux_mod_v_~first~0_191_46 0))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (< 2147483647 aux_mod_v_~first~0_191_46) (< aux_mod_v_~first~0_191_46 0) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_191_46 4294967296))) 0))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296))) 0) (<= 4294967296 aux_mod_v_~first~0_191_46))) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1146 (Array Int Int)) (aux_mod_v_~first~0_191_46 Int)) (or (<= aux_mod_v_~first~0_191_46 2147483647) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1146) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (- 4294967296) (mod aux_mod_v_~first~0_191_46 4294967296))) 0) (<= 4294967296 aux_mod_v_~first~0_191_46))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))))) is different from false [2022-11-20 10:33:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 23 not checked. [2022-11-20 10:33:11,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:11,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609066289] [2022-11-20 10:33:11,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:33:11,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11811054] [2022-11-20 10:33:11,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11811054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:11,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:33:11,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-11-20 10:33:11,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766588050] [2022-11-20 10:33:11,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:11,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:33:11,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:11,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:33:11,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=78, Unknown=9, NotChecked=84, Total=210 [2022-11-20 10:33:11,456 INFO L87 Difference]: Start difference. First operand 650 states and 1449 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2022-11-20 10:33:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:21,919 INFO L93 Difference]: Finished difference Result 696 states and 1516 transitions. [2022-11-20 10:33:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:33:21,920 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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 30 [2022-11-20 10:33:21,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:21,923 INFO L225 Difference]: With dead ends: 696 [2022-11-20 10:33:21,923 INFO L226 Difference]: Without dead ends: 696 [2022-11-20 10:33:21,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=67, Invalid=120, Unknown=11, NotChecked=108, Total=306 [2022-11-20 10:33:21,924 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 81 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:21,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 46 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 136 Invalid, 0 Unknown, 298 Unchecked, 0.2s Time] [2022-11-20 10:33:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-11-20 10:33:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 652. [2022-11-20 10:33:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 649 states have (on average 2.238828967642527) internal successors, (1453), 651 states have internal predecessors, (1453), 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) [2022-11-20 10:33:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1453 transitions. [2022-11-20 10:33:21,942 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1453 transitions. Word has length 30 [2022-11-20 10:33:21,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:21,942 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1453 transitions. [2022-11-20 10:33:21,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2022-11-20 10:33:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1453 transitions. [2022-11-20 10:33:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 10:33:21,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:21,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:21,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:22,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 10:33:22,151 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:33:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash -371198385, now seen corresponding path program 1 times [2022-11-20 10:33:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:22,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489521260] [2022-11-20 10:33:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:22,172 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:33:22,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564319711] [2022-11-20 10:33:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:22,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:22,174 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:22,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 10:33:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:33:22,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:23,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489521260] [2022-11-20 10:33:26,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:33:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564319711] [2022-11-20 10:33:26,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564319711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:26,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:33:26,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 10:33:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68496212] [2022-11-20 10:33:26,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:26,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:33:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:33:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:33:26,441 INFO L87 Difference]: Start difference. First operand 652 states and 1453 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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) [2022-11-20 10:33:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:30,800 INFO L93 Difference]: Finished difference Result 1300 states and 2809 transitions. [2022-11-20 10:33:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:33:30,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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 30 [2022-11-20 10:33:30,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:30,806 INFO L225 Difference]: With dead ends: 1300 [2022-11-20 10:33:30,806 INFO L226 Difference]: Without dead ends: 1300 [2022-11-20 10:33:30,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:33:30,807 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 187 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:30,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 46 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 10:33:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-11-20 10:33:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 934. [2022-11-20 10:33:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 931 states have (on average 2.3125671321160044) internal successors, (2153), 933 states have internal predecessors, (2153), 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) [2022-11-20 10:33:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 2153 transitions. [2022-11-20 10:33:30,855 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 2153 transitions. Word has length 30 [2022-11-20 10:33:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:30,856 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 2153 transitions. [2022-11-20 10:33:30,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 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) [2022-11-20 10:33:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 2153 transitions. [2022-11-20 10:33:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 10:33:30,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:30,858 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:30,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:31,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 10:33:31,067 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:33:31,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:31,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1564891852, now seen corresponding path program 1 times [2022-11-20 10:33:31,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:31,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026898013] [2022-11-20 10:33:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:31,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:31,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:33:31,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830221760] [2022-11-20 10:33:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:31,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:31,089 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:31,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 10:33:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 10:33:31,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:31,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:31,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:33:31,335 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:33:31,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:33:31,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:33:31,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-20 10:33:31,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 10:33:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 10:33:31,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:42,064 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (< aux_mod_v_~first~0_193_46 0) (= c_~value~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296)))) (< 2147483647 aux_mod_v_~first~0_193_46))) (forall ((aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (<= 4294967296 aux_mod_v_~first~0_193_46) (<= aux_mod_v_~first~0_193_46 2147483647) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296))) c_~value~0)))) is different from false [2022-11-20 10:33:46,547 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (< aux_mod_v_~first~0_193_46 0) (< 2147483647 aux_mod_v_~first~0_193_46) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296)))))) (forall ((aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (<= 4294967296 aux_mod_v_~first~0_193_46) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= aux_mod_v_~first~0_193_46 2147483647)))) is different from false [2022-11-20 10:33:46,960 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) (let ((.cse1 (select |c_#memory_int| |c_~#buffer~0.base|)) (.cse0 (<= .cse2 127))) (and (or (not .cse0) (and (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (< aux_mod_v_~first~0_193_46 0) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (< 2147483647 aux_mod_v_~first~0_193_46))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (< aux_mod_v_~first~0_193_46 0) (< 2147483647 aux_mod_v_~first~0_193_46) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296)))))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (<= 4294967296 aux_mod_v_~first~0_193_46) (<= aux_mod_v_~first~0_193_46 2147483647) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (<= 4294967296 aux_mod_v_~first~0_193_46) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296)))) (<= aux_mod_v_~first~0_193_46 2147483647))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))))) (or (let ((.cse3 (+ .cse2 (- 256)))) (and (forall ((aux_mod_v_~first~0_193_46 Int)) (or (< aux_mod_v_~first~0_193_46 0) (< 2147483647 aux_mod_v_~first~0_193_46) (forall ((|~#buffer~0.offset| Int) (aux_mod_~next~0_24 Int) (v_ArrVal_1365 (Array Int Int))) (or (<= aux_mod_~next~0_24 2147483647) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296)))) (<= 4294967296 aux_mod_~next~0_24))))) (forall ((aux_mod_v_~first~0_193_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_193_46) (forall ((|~#buffer~0.offset| Int) (aux_mod_~next~0_24 Int) (v_ArrVal_1365 (Array Int Int))) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (<= aux_mod_v_~first~0_193_46 2147483647))) (forall ((aux_mod_v_~first~0_193_46 Int)) (or (< aux_mod_v_~first~0_193_46 0) (forall ((|~#buffer~0.offset| Int) (aux_mod_~next~0_24 Int) (v_ArrVal_1365 (Array Int Int))) (or (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296)))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (< 2147483647 aux_mod_v_~first~0_193_46))) (forall ((aux_mod_v_~first~0_193_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (aux_mod_~next~0_24 Int) (v_ArrVal_1365 (Array Int Int))) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse1 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (<= 4294967296 aux_mod_v_~first~0_193_46) (<= aux_mod_v_~first~0_193_46 2147483647))))) .cse0)))) is different from false [2022-11-20 10:33:47,362 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_~#buffer~0.base|))) (and (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (< aux_mod_v_~first~0_193_46 0) (< 2147483647 aux_mod_v_~first~0_193_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296))) 0))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (< aux_mod_v_~first~0_193_46 0) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296))) 0) (< 2147483647 aux_mod_v_~first~0_193_46))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (<= 4294967296 aux_mod_v_~first~0_193_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296))) 0) (<= aux_mod_v_~first~0_193_46 2147483647))) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0) (forall ((|~#buffer~0.offset| Int) (aux_mod_v_~first~0_193_46 Int) (v_ArrVal_1365 (Array Int Int))) (or (<= 4294967296 aux_mod_v_~first~0_193_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1365) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_193_46 4294967296) (- 4294967296))) 0) (<= aux_mod_v_~first~0_193_46 2147483647))))))) is different from false [2022-11-20 10:33:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 23 not checked. [2022-11-20 10:33:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:47,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026898013] [2022-11-20 10:33:47,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:33:47,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830221760] [2022-11-20 10:33:47,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830221760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:47,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:33:47,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-11-20 10:33:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168224837] [2022-11-20 10:33:47,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:47,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:33:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:33:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=78, Unknown=9, NotChecked=84, Total=210 [2022-11-20 10:33:47,505 INFO L87 Difference]: Start difference. First operand 934 states and 2153 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-11-20 10:34:26,083 WARN L233 SmtUtils]: Spent 36.48s on a formula simplification. DAG size of input: 112 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:34:32,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:32,575 INFO L93 Difference]: Finished difference Result 1462 states and 3291 transitions. [2022-11-20 10:34:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:34:32,576 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 31 [2022-11-20 10:34:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:32,584 INFO L225 Difference]: With dead ends: 1462 [2022-11-20 10:34:32,584 INFO L226 Difference]: Without dead ends: 1462 [2022-11-20 10:34:32,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 59.1s TimeCoverageRelationStatistics Valid=88, Invalid=156, Unknown=12, NotChecked=124, Total=380 [2022-11-20 10:34:32,585 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 57 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:32,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 41 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 336 Unchecked, 0.2s Time] [2022-11-20 10:34:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-20 10:34:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1116. [2022-11-20 10:34:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1113 states have (on average 2.3450134770889486) internal successors, (2610), 1115 states have internal predecessors, (2610), 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) [2022-11-20 10:34:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 2610 transitions. [2022-11-20 10:34:32,620 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 2610 transitions. Word has length 31 [2022-11-20 10:34:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:32,621 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 2610 transitions. [2022-11-20 10:34:32,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-11-20 10:34:32,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 2610 transitions. [2022-11-20 10:34:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 10:34:32,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:32,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:32,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-20 10:34:32,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 10:34:32,831 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:34:32,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1377724860, now seen corresponding path program 1 times [2022-11-20 10:34:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:32,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640784863] [2022-11-20 10:34:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:32,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:34:32,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140344094] [2022-11-20 10:34:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:32,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:32,849 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:32,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 10:34:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:33,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 10:34:33,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:33,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:34:33,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:34:33,568 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:34:33,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:34:33,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:34:34,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 22 [2022-11-20 10:34:35,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2022-11-20 10:34:35,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-20 10:34:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:34:36,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:57,796 WARN L233 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 129 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:37:42,981 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse56 (mod c_~next~0 4294967296)) (.cse11 (mod (+ c_~first~0 1) 4294967296))) (let ((.cse3 (<= .cse11 2147483647)) (.cse15 (<= .cse56 2147483647))) (let ((.cse0 (+ .cse56 |c_~#buffer~0.offset|)) (.cse1 (not .cse15)) (.cse16 (not .cse3)) (.cse19 (+ |c_~#buffer~0.offset| .cse11))) (or (and (not (<= 4294967296 .cse0)) (or (not (<= 0 .cse0)) .cse1)) (= (mod c_~send~0 256) 0) (let ((.cse5 (+ |c_t1Thread1of1ForFork0_~i~0#1| 1))) (let ((.cse25 (mod .cse5 256))) (let ((.cse2 (<= .cse25 127))) (let ((.cse23 (not .cse2)) (.cse8 (+ |c_~#buffer~0.offset| .cse11 (- 4294967296))) (.cse6 (select |c_#memory_int| |c_~#buffer~0.base|)) (.cse13 (+ .cse56 |c_~#buffer~0.offset| (- 4294967296))) (.cse7 (+ (- 256) .cse25)) (.cse10 (mod (+ c_~next~0 1) 4294967296))) (and (or .cse2 (and (or .cse3 (and (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse4 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse9 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (not (<= .cse4 2147483647)) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse4) .cse7) .cse8)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse9) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse9 .cse11)))) .cse1) (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse12 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse14 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (not (<= .cse12 2147483647)) (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse12) .cse7) .cse8) .cse5) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse14) (not (< 0 .cse12)) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse14 .cse11)))) .cse15))) (or .cse16 (and (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse18 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse17 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (or (not (<= .cse17 2147483647)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse18) (not (< 0 .cse17)) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse18 .cse11) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse17) .cse7) .cse19))))) .cse15) (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse20 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (let ((.cse22 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse21 (+ |c_~#buffer~0.offset| .cse20))) (or (not (<= .cse20 2147483647)) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) .cse21 .cse7) .cse19)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse22) (not (< 0 .cse20)) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse22 .cse11) (not (<= 0 .cse21)))))) .cse1))))) (or .cse23 (and (or (and (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse24 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse26 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse24 (- 4294967296)) .cse25) .cse8)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse24 2147483647) (<= 4294967296 .cse26) (< (+ |c_~#buffer~0.offset| .cse24) 4294967296) (<= .cse26 .cse11)))) .cse1) (or .cse15 (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse28 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse27 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (or (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse27 2147483647) (<= 4294967296 .cse28) (<= .cse28 .cse11) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse27 (- 4294967296)) .cse25) .cse8))))))) .cse3) (or .cse16 (and (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse30 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (let ((.cse29 (+ |c_~#buffer~0.offset| .cse30)) (.cse31 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) .cse29 .cse25) .cse19) .cse5) (not (<= .cse30 2147483647)) (not (<= 4294967296 .cse29)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= 4294967296 .cse31) (not (< 0 .cse30)) (<= .cse31 .cse11))))) .cse1) (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse33 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (let ((.cse32 (+ |c_~#buffer~0.offset| .cse33)) (.cse34 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) .cse32 .cse25) .cse19) .cse5) (not (<= .cse33 2147483647)) (not (<= 4294967296 .cse32)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= 4294967296 .cse34) (not (< 0 .cse33)) (<= .cse34 .cse11))))) .cse15))) (or .cse16 (and (or .cse15 (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse35 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse36 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse35 (- 4294967296)) .cse25) .cse19)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse35 2147483647) (<= 4294967296 .cse36) (<= .cse36 .cse11))))) (or .cse1 (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse37 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse38 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse37 2147483647) (<= 4294967296 .cse38) (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse37 (- 4294967296)) .cse25) .cse19) .cse5) (< (+ |c_~#buffer~0.offset| .cse37) 4294967296) (<= .cse38 .cse11))))))))) (or .cse23 (and (or .cse3 (and (or .cse1 (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse40 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse39 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (or (not (<= .cse39 2147483647)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse40) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse40 .cse11) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse39) .cse25) .cse8)))))) (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse42 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse41 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (or (not (<= .cse41 2147483647)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse42) (not (< 0 .cse41)) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse42 .cse11) (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse41) .cse25) .cse8) .cse5)))) .cse15))) (or .cse16 (and (or .cse15 (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse43 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse44 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse43) .cse25) .cse19) .cse5) (not (<= .cse43 2147483647)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse44) (not (< 0 .cse43)) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse44 .cse11))))) (or .cse1 (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse46 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (let ((.cse47 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse45 (+ |c_~#buffer~0.offset| .cse46))) (or (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) .cse45 .cse25) .cse19) .cse5) (not (<= .cse46 2147483647)) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (<= 4294967296 .cse47) (not (< 0 .cse46)) (<= aux_mod_aux_mod_~buffer_size~0_31_42 (mod (mod .cse10 aux_mod_aux_mod_~buffer_size~0_31_42) 4294967296)) (<= .cse47 .cse11) (not (<= 0 .cse45))))))))))) (or .cse2 (and (or (and (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse48 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse49 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse48 2147483647) (<= 4294967296 .cse49) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse48 (- 4294967296)) .cse7) .cse8)) (<= .cse49 .cse11)))) .cse15) (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse51 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse50 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (or (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse50 2147483647) (<= 4294967296 .cse51) (< (+ |c_~#buffer~0.offset| .cse50) 4294967296) (<= .cse51 .cse11) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse50 (- 4294967296)) .cse7) .cse8))))) .cse1)) .cse3) (or (and (or (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse53 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42)) (.cse52 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296))) (or (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse52 2147483647) (<= 4294967296 .cse53) (< (+ |c_~#buffer~0.offset| .cse52) 4294967296) (<= .cse53 .cse11) (= .cse5 (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse0 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse52 (- 4294967296)) .cse7) .cse19))))) .cse1) (or .cse15 (forall ((aux_mod_aux_mod_~buffer_size~0_31_42 Int) (aux_div_aux_mod_~buffer_size~0_31_42 Int) (v_ArrVal_1469 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse54 (mod (mod .cse10 (mod aux_mod_aux_mod_~buffer_size~0_31_42 4294967296)) 4294967296)) (.cse55 (+ (* aux_div_aux_mod_~buffer_size~0_31_42 4294967296) aux_mod_aux_mod_~buffer_size~0_31_42))) (or (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse6 .cse13 v_ArrVal_1469)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1470) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| .cse54 (- 4294967296)) .cse7) .cse19) .cse5) (<= 4294967296 aux_mod_aux_mod_~buffer_size~0_31_42) (< aux_mod_aux_mod_~buffer_size~0_31_42 0) (<= .cse54 2147483647) (<= 4294967296 .cse55) (<= .cse55 .cse11)))))) .cse16)))))))) (and (not (<= 4294967296 .cse19)) (or .cse16 (not (<= 0 .cse19)))))))) is different from true [2022-11-20 10:40:28,105 WARN L233 SmtUtils]: Spent 1.78m on a formula simplification. DAG size of input: 138 DAG size of output: 106 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:40:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-20 10:40:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:36,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640784863] [2022-11-20 10:40:36,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:36,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140344094] [2022-11-20 10:40:36,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140344094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:36,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:36,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-20 10:40:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499778331] [2022-11-20 10:40:36,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:36,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:40:36,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:40:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=505, Unknown=10, NotChecked=46, Total=650 [2022-11-20 10:40:36,578 INFO L87 Difference]: Start difference. First operand 1116 states and 2610 transitions. Second operand has 26 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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) [2022-11-20 10:40:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:40,592 INFO L93 Difference]: Finished difference Result 1181 states and 2762 transitions. [2022-11-20 10:40:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:40:40,593 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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 31 [2022-11-20 10:40:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:40,598 INFO L225 Difference]: With dead ends: 1181 [2022-11-20 10:40:40,598 INFO L226 Difference]: Without dead ends: 1181 [2022-11-20 10:40:40,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 241.2s TimeCoverageRelationStatistics Valid=156, Invalid=830, Unknown=10, NotChecked=60, Total=1056 [2022-11-20 10:40:40,600 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:40,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 92 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 295 Unchecked, 0.1s Time] [2022-11-20 10:40:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-20 10:40:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1159. [2022-11-20 10:40:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1156 states have (on average 2.3451557093425603) internal successors, (2711), 1158 states have internal predecessors, (2711), 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) [2022-11-20 10:40:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2711 transitions. [2022-11-20 10:40:40,636 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2711 transitions. Word has length 31 [2022-11-20 10:40:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:40,636 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 2711 transitions. [2022-11-20 10:40:40,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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) [2022-11-20 10:40:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2711 transitions. [2022-11-20 10:40:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 10:40:40,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:40,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:40,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-20 10:40:40,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 10:40:40,848 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:40:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1778330062, now seen corresponding path program 2 times [2022-11-20 10:40:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966132678] [2022-11-20 10:40:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:40,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:40,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:40,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348634605] [2022-11-20 10:40:40,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:40:40,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:40,877 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:40,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 10:40:41,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:40:41,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:41,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 10:40:41,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:41,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:41,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:41,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:41,999 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 15 treesize of output 19 [2022-11-20 10:40:44,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 65 [2022-11-20 10:40:44,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 123 [2022-11-20 10:40:44,549 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 84 treesize of output 15 [2022-11-20 10:40:44,790 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2022-11-20 10:40:46,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:46,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 9 [2022-11-20 10:40:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:40:46,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:47,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-20 10:40:47,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:40:47,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-11-20 10:40:47,531 INFO L321 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2022-11-20 10:40:47,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 129 [2022-11-20 10:40:47,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:40:47,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 82 [2022-11-20 10:43:40,738 WARN L233 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 99 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:44:00,708 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:44:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:02,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:02,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966132678] [2022-11-20 10:44:02,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:44:02,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348634605] [2022-11-20 10:44:02,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348634605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:02,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:44:02,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2022-11-20 10:44:02,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293052249] [2022-11-20 10:44:02,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:44:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:02,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:44:02,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=649, Unknown=3, NotChecked=0, Total=756 [2022-11-20 10:44:02,613 INFO L87 Difference]: Start difference. First operand 1159 states and 2711 transitions. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 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) [2022-11-20 10:44:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:50,974 INFO L93 Difference]: Finished difference Result 1967 states and 4444 transitions. [2022-11-20 10:44:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 10:44:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 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 31 [2022-11-20 10:44:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:50,984 INFO L225 Difference]: With dead ends: 1967 [2022-11-20 10:44:50,985 INFO L226 Difference]: Without dead ends: 1967 [2022-11-20 10:44:50,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 207.8s TimeCoverageRelationStatistics Valid=438, Invalid=3219, Unknown=3, NotChecked=0, Total=3660 [2022-11-20 10:44:50,987 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 322 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 886 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:50,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 109 Invalid, 2456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1537 Invalid, 0 Unknown, 886 Unchecked, 9.0s Time] [2022-11-20 10:44:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-11-20 10:44:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1274. [2022-11-20 10:44:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1271 states have (on average 2.3367427222659325) internal successors, (2970), 1273 states have internal predecessors, (2970), 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) [2022-11-20 10:44:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2970 transitions. [2022-11-20 10:44:51,031 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2970 transitions. Word has length 31 [2022-11-20 10:44:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:51,032 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 2970 transitions. [2022-11-20 10:44:51,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 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) [2022-11-20 10:44:51,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2970 transitions. [2022-11-20 10:44:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 10:44:51,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:51,034 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:51,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:51,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:51,243 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:44:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash -169704658, now seen corresponding path program 2 times [2022-11-20 10:44:51,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:51,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892005776] [2022-11-20 10:44:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:51,262 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:44:51,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053938238] [2022-11-20 10:44:51,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:44:51,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:51,264 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:51,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 10:44:51,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:44:51,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:44:51,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 10:44:51,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:51,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:44:51,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:44:51,525 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:44:51,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:44:51,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:44:51,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-20 10:44:51,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 10:44:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 10:44:51,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:12,740 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1697 (Array Int Int)) (aux_mod_v_~first~0_198_46 Int)) (or (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296) (- 4294967296)))) (<= 4294967296 aux_mod_v_~first~0_198_46) (<= aux_mod_v_~first~0_198_46 2147483647))) (forall ((v_ArrVal_1697 (Array Int Int)) (aux_mod_v_~first~0_198_46 Int)) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (< aux_mod_v_~first~0_198_46 0) (< 2147483647 aux_mod_v_~first~0_198_46)))) is different from false [2022-11-20 10:45:13,220 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) (let ((.cse3 (<= .cse2 127)) (.cse0 (select |c_#memory_int| |c_~#buffer~0.base|))) (and (or (let ((.cse1 (+ .cse2 (- 256)))) (and (forall ((aux_mod_v_~first~0_198_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_198_46) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296) (- 4294967296)))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (<= aux_mod_v_~first~0_198_46 2147483647))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (< aux_mod_v_~first~0_198_46 0) (< 2147483647 aux_mod_v_~first~0_198_46))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296)))))) (< aux_mod_v_~first~0_198_46 0) (< 2147483647 aux_mod_v_~first~0_198_46))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (<= 4294967296 aux_mod_v_~first~0_198_46) (<= aux_mod_v_~first~0_198_46 2147483647))))) .cse3) (or (not .cse3) (and (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296) (- 4294967296)))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (<= 4294967296 aux_mod_v_~first~0_198_46) (<= aux_mod_v_~first~0_198_46 2147483647))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296) (- 4294967296)))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (<= 4294967296 aux_mod_v_~first~0_198_46) (<= aux_mod_v_~first~0_198_46 2147483647))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (< aux_mod_v_~first~0_198_46 0) (< 2147483647 aux_mod_v_~first~0_198_46))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse2)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296)))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (< aux_mod_v_~first~0_198_46 0) (< 2147483647 aux_mod_v_~first~0_198_46)))))))) is different from false [2022-11-20 10:45:13,588 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_~#buffer~0.base|))) (and (forall ((aux_mod_v_~first~0_198_46 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296))) 0) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (< aux_mod_v_~first~0_198_46 0) (< 2147483647 aux_mod_v_~first~0_198_46))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (< aux_mod_v_~first~0_198_46 0) (< 2147483647 aux_mod_v_~first~0_198_46) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296))) 0) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_198_46) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296) (- 4294967296))) 0) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (<= aux_mod_v_~first~0_198_46 2147483647))) (forall ((aux_mod_v_~first~0_198_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_198_46) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1697 (Array Int Int)) (aux_mod_~next~0_24 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1697) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_198_46 4294967296) (- 4294967296))) 0) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (<= aux_mod_v_~first~0_198_46 2147483647))))) is different from false [2022-11-20 10:45:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 7 not checked. [2022-11-20 10:45:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892005776] [2022-11-20 10:45:13,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:45:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053938238] [2022-11-20 10:45:13,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053938238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:13,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:45:13,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-11-20 10:45:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311544539] [2022-11-20 10:45:13,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:13,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:45:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:13,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:45:13,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=95, Unknown=11, NotChecked=66, Total=210 [2022-11-20 10:45:13,692 INFO L87 Difference]: Start difference. First operand 1274 states and 2970 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-11-20 10:45:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:22,153 INFO L93 Difference]: Finished difference Result 1668 states and 3852 transitions. [2022-11-20 10:45:22,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:45:22,154 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 31 [2022-11-20 10:45:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:22,162 INFO L225 Difference]: With dead ends: 1668 [2022-11-20 10:45:22,162 INFO L226 Difference]: Without dead ends: 1668 [2022-11-20 10:45:22,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=84, Invalid=185, Unknown=15, NotChecked=96, Total=380 [2022-11-20 10:45:22,163 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 75 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 472 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:22,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 46 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 472 Unchecked, 0.3s Time] [2022-11-20 10:45:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-20 10:45:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1302. [2022-11-20 10:45:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1299 states have (on average 2.344110854503464) internal successors, (3045), 1301 states have internal predecessors, (3045), 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) [2022-11-20 10:45:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 3045 transitions. [2022-11-20 10:45:22,203 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 3045 transitions. Word has length 31 [2022-11-20 10:45:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:22,204 INFO L495 AbstractCegarLoop]: Abstraction has 1302 states and 3045 transitions. [2022-11-20 10:45:22,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-11-20 10:45:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 3045 transitions. [2022-11-20 10:45:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 10:45:22,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:22,207 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:22,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:22,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 10:45:22,415 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:45:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:22,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2045027464, now seen corresponding path program 3 times [2022-11-20 10:45:22,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:22,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613085843] [2022-11-20 10:45:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:22,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:22,434 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:45:22,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428087981] [2022-11-20 10:45:22,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:45:22,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:22,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:22,436 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:22,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 10:45:23,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:45:23,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:23,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 10:45:23,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:23,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:45:23,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:45:23,135 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:45:23,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:45:23,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:45:23,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-20 10:45:23,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 10:45:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 10:45:23,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:40,289 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (< aux_mod_v_~first~0_199_46 0) (< 2147483647 aux_mod_v_~first~0_199_46) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|))) (forall ((v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |c_~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= 4294967296 aux_mod_v_~first~0_199_46) (<= aux_mod_v_~first~0_199_46 2147483647)))) is different from false [2022-11-20 10:45:40,718 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) (let ((.cse2 (<= .cse1 127)) (.cse0 (select |c_#memory_int| |c_~#buffer~0.base|))) (and (or (and (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= 4294967296 aux_mod_v_~first~0_199_46) (<= aux_mod_v_~first~0_199_46 2147483647))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (< aux_mod_v_~first~0_199_46 0) (< 2147483647 aux_mod_v_~first~0_199_46) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296)))))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (< aux_mod_v_~first~0_199_46 0) (< 2147483647 aux_mod_v_~first~0_199_46) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296)))))) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse1)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= 4294967296 aux_mod_v_~first~0_199_46) (<= aux_mod_v_~first~0_199_46 2147483647))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24)))) (not .cse2)) (or .cse2 (let ((.cse3 (+ .cse1 (- 256)))) (and (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (< aux_mod_v_~first~0_199_46 0) (< 2147483647 aux_mod_v_~first~0_199_46))) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (<= aux_mod_~next~0_24 2147483647) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_199_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296) (- 4294967296))) |c_t1Thread1of1ForFork0_~i~0#1|) (<= aux_mod_v_~first~0_199_46 2147483647))) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (< 2147483647 aux_mod_~next~0_24) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_199_46) (<= aux_mod_v_~first~0_199_46 2147483647) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296) (- 4294967296)))))) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (< aux_mod_v_~first~0_199_46 0) (< 2147483647 aux_mod_v_~first~0_199_46) (= |c_t1Thread1of1ForFork0_~i~0#1| (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) .cse3)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296)))))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))))))))) is different from false [2022-11-20 10:45:41,095 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_~#buffer~0.base|))) (and (forall ((aux_mod_~next~0_24 Int)) (or (< 2147483647 aux_mod_~next~0_24) (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_199_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296) (- 4294967296))) 0) (<= aux_mod_v_~first~0_199_46 2147483647))) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (< aux_mod_v_~first~0_199_46 0) (< 2147483647 aux_mod_v_~first~0_199_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296))) 0))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (< aux_mod_v_~first~0_199_46 0) (< 2147483647 aux_mod_v_~first~0_199_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296))) 0))) (< 2147483647 aux_mod_~next~0_24) (< aux_mod_~next~0_24 0))) (forall ((aux_mod_~next~0_24 Int)) (or (forall ((|~#buffer~0.offset| Int) (v_ArrVal_1820 (Array Int Int)) (aux_mod_v_~first~0_199_46 Int)) (or (<= 4294967296 aux_mod_v_~first~0_199_46) (= (select (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store .cse0 (+ |~#buffer~0.offset| (mod aux_mod_~next~0_24 4294967296) (- 4294967296)) 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1820) |c_~#buffer~0.base|) (+ |~#buffer~0.offset| (mod aux_mod_v_~first~0_199_46 4294967296) (- 4294967296))) 0) (<= aux_mod_v_~first~0_199_46 2147483647))) (<= aux_mod_~next~0_24 2147483647) (<= 4294967296 aux_mod_~next~0_24))))) is different from false [2022-11-20 10:45:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 7 not checked. [2022-11-20 10:45:41,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613085843] [2022-11-20 10:45:41,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:45:41,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428087981] [2022-11-20 10:45:41,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428087981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:41,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:45:41,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2022-11-20 10:45:41,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428594687] [2022-11-20 10:45:41,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:41,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:45:41,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:41,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:45:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=63, Unknown=10, NotChecked=54, Total=156 [2022-11-20 10:45:41,194 INFO L87 Difference]: Start difference. First operand 1302 states and 3045 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-11-20 10:45:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:45,588 INFO L93 Difference]: Finished difference Result 1645 states and 3782 transitions. [2022-11-20 10:45:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:45:45,589 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 31 [2022-11-20 10:45:45,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:45,596 INFO L225 Difference]: With dead ends: 1645 [2022-11-20 10:45:45,596 INFO L226 Difference]: Without dead ends: 1645 [2022-11-20 10:45:45,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=12, NotChecked=72, Total=240 [2022-11-20 10:45:45,597 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 97 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 352 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:45,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 30 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 352 Unchecked, 0.2s Time] [2022-11-20 10:45:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-11-20 10:45:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1114. [2022-11-20 10:45:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1111 states have (on average 2.3114311431143113) internal successors, (2568), 1113 states have internal predecessors, (2568), 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) [2022-11-20 10:45:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 2568 transitions. [2022-11-20 10:45:45,634 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 2568 transitions. Word has length 31 [2022-11-20 10:45:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:45,634 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 2568 transitions. [2022-11-20 10:45:45,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-11-20 10:45:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 2568 transitions. [2022-11-20 10:45:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 10:45:45,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:45,637 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:45,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:45,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 10:45:45,845 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:45:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1891367526, now seen corresponding path program 1 times [2022-11-20 10:45:45,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:45,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796283350] [2022-11-20 10:45:45,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:45,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:45,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:45:45,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662408105] [2022-11-20 10:45:45,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:45,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:45,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:45,876 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:45,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 10:45:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:46,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:45:46,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 10:45:46,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 10:45:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:46,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796283350] [2022-11-20 10:45:46,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:45:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662408105] [2022-11-20 10:45:46,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662408105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:46,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:45:46,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 10:45:46,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369384339] [2022-11-20 10:45:46,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:46,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:45:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:45:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:45:46,153 INFO L87 Difference]: Start difference. First operand 1114 states and 2568 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-20 10:45:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:46,402 INFO L93 Difference]: Finished difference Result 2896 states and 6018 transitions. [2022-11-20 10:45:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:45:46,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 34 [2022-11-20 10:45:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:46,412 INFO L225 Difference]: With dead ends: 2896 [2022-11-20 10:45:46,412 INFO L226 Difference]: Without dead ends: 2896 [2022-11-20 10:45:46,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:45:46,414 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 103 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:46,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 24 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:45:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2022-11-20 10:45:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2888. [2022-11-20 10:45:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2885 states have (on average 2.083535528596187) internal successors, (6011), 2887 states have internal predecessors, (6011), 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) [2022-11-20 10:45:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 6011 transitions. [2022-11-20 10:45:46,501 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 6011 transitions. Word has length 34 [2022-11-20 10:45:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:46,502 INFO L495 AbstractCegarLoop]: Abstraction has 2888 states and 6011 transitions. [2022-11-20 10:45:46,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-20 10:45:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 6011 transitions. [2022-11-20 10:45:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 10:45:46,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:46,508 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:46,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:46,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:46,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:45:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash -579370107, now seen corresponding path program 2 times [2022-11-20 10:45:46,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:46,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552046642] [2022-11-20 10:45:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:46,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:46,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:45:46,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311279590] [2022-11-20 10:45:46,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:46,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:46,742 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:46,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 10:45:46,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:45:46,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:46,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:45:46,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-20 10:45:47,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:47,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:47,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552046642] [2022-11-20 10:45:47,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:45:47,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311279590] [2022-11-20 10:45:47,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311279590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:47,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:45:47,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 10:45:47,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577297919] [2022-11-20 10:45:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:47,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:45:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:45:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:45:47,318 INFO L87 Difference]: Start difference. First operand 2888 states and 6011 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2022-11-20 10:45:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:47,371 INFO L93 Difference]: Finished difference Result 2945 states and 6122 transitions. [2022-11-20 10:45:47,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:45:47,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 40 [2022-11-20 10:45:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:47,380 INFO L225 Difference]: With dead ends: 2945 [2022-11-20 10:45:47,381 INFO L226 Difference]: Without dead ends: 2898 [2022-11-20 10:45:47,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:45:47,382 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:47,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-20 10:45:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2022-11-20 10:45:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2830. [2022-11-20 10:45:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2827 states have (on average 2.073222497347011) internal successors, (5861), 2829 states have internal predecessors, (5861), 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) [2022-11-20 10:45:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 5861 transitions. [2022-11-20 10:45:47,448 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 5861 transitions. Word has length 40 [2022-11-20 10:45:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:47,448 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 5861 transitions. [2022-11-20 10:45:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2022-11-20 10:45:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 5861 transitions. [2022-11-20 10:45:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 10:45:47,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:47,455 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:47,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:47,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:47,662 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:45:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash -401139502, now seen corresponding path program 1 times [2022-11-20 10:45:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:47,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839467953] [2022-11-20 10:45:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:47,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:47,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:45:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882994633] [2022-11-20 10:45:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:47,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:47,694 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:47,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 10:45:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:48,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:45:48,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 10:45:48,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 10:45:48,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:48,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839467953] [2022-11-20 10:45:48,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:45:48,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882994633] [2022-11-20 10:45:48,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882994633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:48,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:45:48,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 10:45:48,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405289662] [2022-11-20 10:45:48,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:48,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:45:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:45:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:45:48,159 INFO L87 Difference]: Start difference. First operand 2830 states and 5861 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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) [2022-11-20 10:45:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:48,555 INFO L93 Difference]: Finished difference Result 5492 states and 11021 transitions. [2022-11-20 10:45:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:45:48,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 45 [2022-11-20 10:45:48,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:48,574 INFO L225 Difference]: With dead ends: 5492 [2022-11-20 10:45:48,574 INFO L226 Difference]: Without dead ends: 5492 [2022-11-20 10:45:48,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:45:48,575 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 255 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:48,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 34 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:45:48,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2022-11-20 10:45:48,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5392. [2022-11-20 10:45:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5389 states have (on average 2.0128038597142326) internal successors, (10847), 5391 states have internal predecessors, (10847), 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) [2022-11-20 10:45:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 10847 transitions. [2022-11-20 10:45:48,733 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 10847 transitions. Word has length 45 [2022-11-20 10:45:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:48,734 INFO L495 AbstractCegarLoop]: Abstraction has 5392 states and 10847 transitions. [2022-11-20 10:45:48,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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) [2022-11-20 10:45:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 10847 transitions. [2022-11-20 10:45:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 10:45:48,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:48,745 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:48,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:48,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-20 10:45:48,952 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-20 10:45:48,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash -51785998, now seen corresponding path program 1 times [2022-11-20 10:45:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:48,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512743106] [2022-11-20 10:45:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:48,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:48,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:45:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546645623] [2022-11-20 10:45:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:48,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:48,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:48,977 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:48,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edccae2-58e3-420c-b87a-0024b27ce02c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 10:45:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:49,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-20 10:45:49,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:49,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:45:49,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:45:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:45:49,910 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 15 treesize of output 19 [2022-11-20 10:45:49,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:45:49,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-11-20 10:45:49,941 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 10:45:49,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:45:50,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:45:50,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-20 10:45:51,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-20 10:45:51,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2022-11-20 10:45:51,927 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 10:45:52,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-20 10:45:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:52,325 INFO L328 TraceCheckSpWp]: Computing backward predicates...