./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 e04fb08f 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 11:18:48,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:18:48,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:18:48,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:18:48,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:18:48,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:18:48,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:18:48,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:18:48,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:18:48,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:18:48,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:18:48,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:18:48,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:18:48,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:18:48,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:18:48,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:18:48,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:18:48,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:18:48,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:18:48,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:18:48,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:18:48,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:18:48,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:18:48,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:18:48,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:18:48,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:18:48,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:18:48,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:18:48,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:18:48,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:18:48,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:18:48,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:18:48,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:18:48,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:18:48,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:18:48,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:18:48,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:18:48,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:18:48,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:18:48,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:18:48,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:18:48,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:18:48,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:18:48,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:18:48,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:18:48,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:18:48,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:18:48,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:18:48,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:18:48,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:18:48,873 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:18:48,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:18:48,873 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:18:48,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:18:48,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:18:48,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:18:48,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:18:48,874 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:18:48,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:18:48,875 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:18:48,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:18:48,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:18:48,875 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:18:48,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:18:48,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:18:48,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:18:48,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:18:48,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:18:48,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:18:48,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:18:48,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:18:48,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:18:48,877 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2022-11-16 11:18:49,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:18:49,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:18:49,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:18:49,229 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:18:49,230 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:18:49,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-16 11:18:49,328 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/data/fac9dc9d3/46e7cd76c80145e0bdda79259fb11160/FLAGf5088b889 [2022-11-16 11:18:49,919 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:18:49,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-16 11:18:49,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/data/fac9dc9d3/46e7cd76c80145e0bdda79259fb11160/FLAGf5088b889 [2022-11-16 11:18:50,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/data/fac9dc9d3/46e7cd76c80145e0bdda79259fb11160 [2022-11-16 11:18:50,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:18:50,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:18:50,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:18:50,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:18:50,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:18:50,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:50,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5928db1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50, skipping insertion in model container [2022-11-16 11:18:50,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:50,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:18:50,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:18:50,765 WARN L229 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-16 11:18:50,779 WARN L229 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-16 11:18:50,789 WARN L229 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-16 11:18:50,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:18:50,819 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:18:50,903 WARN L229 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-16 11:18:50,905 WARN L229 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-16 11:18:50,910 WARN L229 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_2ee9af67-91de-4117-bf5d-19d57fd994c3/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-16 11:18:50,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:18:50,975 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:18:50,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50 WrapperNode [2022-11-16 11:18:50,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:18:50,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:18:50,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:18:50,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:18:50,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,069 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-11-16 11:18:51,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:18:51,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:18:51,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:18:51,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:18:51,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:18:51,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:18:51,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:18:51,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:18:51,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (1/1) ... [2022-11-16 11:18:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:18:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:18:51,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:18:51,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:18:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:18:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 11:18:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 11:18:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 11:18:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 11:18:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:18:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:18:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:18:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:18:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:18:51,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:18:51,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:18:51,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:18:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:18:51,218 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:18:51,401 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:18:51,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:18:51,948 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:18:51,957 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:18:51,962 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:18:51,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:18:51 BoogieIcfgContainer [2022-11-16 11:18:51,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:18:51,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:18:51,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:18:51,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:18:51,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:18:50" (1/3) ... [2022-11-16 11:18:51,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424dde8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:18:51, skipping insertion in model container [2022-11-16 11:18:51,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:18:50" (2/3) ... [2022-11-16 11:18:51,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424dde8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:18:51, skipping insertion in model container [2022-11-16 11:18:51,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:18:51" (3/3) ... [2022-11-16 11:18:51,983 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-11-16 11:18:52,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:18:52,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 11:18:52,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:18:52,112 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:18:52,150 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:18:52,167 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 174 transitions, 364 flow [2022-11-16 11:18:52,170 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 174 transitions, 364 flow [2022-11-16 11:18:52,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 174 transitions, 364 flow [2022-11-16 11:18:52,307 INFO L130 PetriNetUnfolder]: 11/172 cut-off events. [2022-11-16 11:18:52,307 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:18:52,318 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. [2022-11-16 11:18:52,325 INFO L119 LiptonReduction]: Number of co-enabled transitions 6010 [2022-11-16 11:19:16,563 INFO L134 LiptonReduction]: Checked pairs total: 13262 [2022-11-16 11:19:16,563 INFO L136 LiptonReduction]: Total number of compositions: 184 [2022-11-16 11:19:16,576 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 51 transitions, 118 flow [2022-11-16 11:19:16,669 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) [2022-11-16 11:19:16,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:19:16,722 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;@77f53447, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:19:16,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 11:19:16,730 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) [2022-11-16 11:19:16,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 11:19:16,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:16,739 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 11:19:16,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash 704, now seen corresponding path program 1 times [2022-11-16 11:19:16,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:16,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629758574] [2022-11-16 11:19:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:16,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:16,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629758574] [2022-11-16 11:19:16,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629758574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:16,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:16,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 11:19:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239322841] [2022-11-16 11:19:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:19:16,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:19:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:19:16,943 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) [2022-11-16 11:19:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:17,112 INFO L93 Difference]: Finished difference Result 676 states and 1988 transitions. [2022-11-16 11:19:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:19:17,117 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 [2022-11-16 11:19:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:17,150 INFO L225 Difference]: With dead ends: 676 [2022-11-16 11:19:17,150 INFO L226 Difference]: Without dead ends: 676 [2022-11-16 11:19:17,151 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 [2022-11-16 11:19:17,157 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 [2022-11-16 11:19:17,164 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] [2022-11-16 11:19:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-11-16 11:19:17,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2022-11-16 11:19:17,281 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) [2022-11-16 11:19:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1988 transitions. [2022-11-16 11:19:17,290 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1988 transitions. Word has length 1 [2022-11-16 11:19:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:17,291 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1988 transitions. [2022-11-16 11:19:17,291 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) [2022-11-16 11:19:17,293 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1988 transitions. [2022-11-16 11:19:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:19:17,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:17,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:19:17,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:19:17,296 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)] === [2022-11-16 11:19:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash 693239, now seen corresponding path program 1 times [2022-11-16 11:19:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:17,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137792170] [2022-11-16 11:19:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:17,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:17,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:17,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137792170] [2022-11-16 11:19:17,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137792170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:17,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:17,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:19:17,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441985508] [2022-11-16 11:19:17,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:17,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:17,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:17,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:17,571 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) [2022-11-16 11:19:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:17,681 INFO L93 Difference]: Finished difference Result 652 states and 1936 transitions. [2022-11-16 11:19:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:17,682 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 [2022-11-16 11:19:17,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:17,688 INFO L225 Difference]: With dead ends: 652 [2022-11-16 11:19:17,688 INFO L226 Difference]: Without dead ends: 652 [2022-11-16 11:19:17,689 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 [2022-11-16 11:19:17,690 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 [2022-11-16 11:19:17,691 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] [2022-11-16 11:19:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-16 11:19:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2022-11-16 11:19:17,716 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) [2022-11-16 11:19:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1936 transitions. [2022-11-16 11:19:17,721 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1936 transitions. Word has length 3 [2022-11-16 11:19:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:17,722 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1936 transitions. [2022-11-16 11:19:17,722 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) [2022-11-16 11:19:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1936 transitions. [2022-11-16 11:19:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:19:17,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:17,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:19:17,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:19:17,724 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)] === [2022-11-16 11:19:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash 693240, now seen corresponding path program 1 times [2022-11-16 11:19:17,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:17,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165242964] [2022-11-16 11:19:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:17,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:17,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:17,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165242964] [2022-11-16 11:19:17,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165242964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:17,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:17,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:19:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494593526] [2022-11-16 11:19:17,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:17,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:17,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:17,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:17,863 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) [2022-11-16 11:19:17,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:17,945 INFO L93 Difference]: Finished difference Result 628 states and 1884 transitions. [2022-11-16 11:19:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:17,945 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 [2022-11-16 11:19:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:17,950 INFO L225 Difference]: With dead ends: 628 [2022-11-16 11:19:17,950 INFO L226 Difference]: Without dead ends: 628 [2022-11-16 11:19:17,951 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 [2022-11-16 11:19:17,952 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 [2022-11-16 11:19:17,952 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] [2022-11-16 11:19:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-16 11:19:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-11-16 11:19:17,989 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) [2022-11-16 11:19:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1884 transitions. [2022-11-16 11:19:17,994 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1884 transitions. Word has length 3 [2022-11-16 11:19:17,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:17,994 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1884 transitions. [2022-11-16 11:19:17,994 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) [2022-11-16 11:19:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1884 transitions. [2022-11-16 11:19:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:19:17,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:17,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:19:17,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:19:17,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 666184449, now seen corresponding path program 1 times [2022-11-16 11:19:18,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:18,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917338972] [2022-11-16 11:19:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:18,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:18,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917338972] [2022-11-16 11:19:18,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917338972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:18,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:18,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:19:18,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966221881] [2022-11-16 11:19:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:18,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:18,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:18,246 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) [2022-11-16 11:19:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:18,330 INFO L93 Difference]: Finished difference Result 532 states and 1607 transitions. [2022-11-16 11:19:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:18,334 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 [2022-11-16 11:19:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:18,339 INFO L225 Difference]: With dead ends: 532 [2022-11-16 11:19:18,340 INFO L226 Difference]: Without dead ends: 532 [2022-11-16 11:19:18,340 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 [2022-11-16 11:19:18,344 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 [2022-11-16 11:19:18,349 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] [2022-11-16 11:19:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-16 11:19:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-11-16 11:19:18,372 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) [2022-11-16 11:19:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1607 transitions. [2022-11-16 11:19:18,376 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1607 transitions. Word has length 5 [2022-11-16 11:19:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:18,378 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 1607 transitions. [2022-11-16 11:19:18,378 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) [2022-11-16 11:19:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1607 transitions. [2022-11-16 11:19:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:19:18,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:18,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:19:18,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:19:18,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash 666184450, now seen corresponding path program 1 times [2022-11-16 11:19:18,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:18,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955068867] [2022-11-16 11:19:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:18,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:18,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955068867] [2022-11-16 11:19:18,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955068867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:18,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:18,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:19:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239986981] [2022-11-16 11:19:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:18,778 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) [2022-11-16 11:19:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:18,955 INFO L93 Difference]: Finished difference Result 734 states and 2194 transitions. [2022-11-16 11:19:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:18,956 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 [2022-11-16 11:19:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:18,962 INFO L225 Difference]: With dead ends: 734 [2022-11-16 11:19:18,962 INFO L226 Difference]: Without dead ends: 734 [2022-11-16 11:19:18,963 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 [2022-11-16 11:19:18,964 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:18,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:19:18,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-11-16 11:19:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 712. [2022-11-16 11:19:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 685 states have (on average 3.164963503649635) internal successors, (2168), 711 states have internal predecessors, (2168), 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) [2022-11-16 11:19:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2168 transitions. [2022-11-16 11:19:18,994 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2168 transitions. Word has length 5 [2022-11-16 11:19:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:18,995 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 2168 transitions. [2022-11-16 11:19:18,995 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) [2022-11-16 11:19:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2168 transitions. [2022-11-16 11:19:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:19:18,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:18,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:19:18,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:19:18,996 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)] === [2022-11-16 11:19:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash 666217480, now seen corresponding path program 1 times [2022-11-16 11:19:18,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:18,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422028244] [2022-11-16 11:19:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:18,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:19,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:19,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422028244] [2022-11-16 11:19:19,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422028244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:19,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:19,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:19:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807049853] [2022-11-16 11:19:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:19,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:19:19,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:19,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:19:19,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:19:19,098 INFO L87 Difference]: Start difference. First operand 712 states and 2168 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) [2022-11-16 11:19:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:19,193 INFO L93 Difference]: Finished difference Result 552 states and 1625 transitions. [2022-11-16 11:19:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:19,195 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 [2022-11-16 11:19:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:19,200 INFO L225 Difference]: With dead ends: 552 [2022-11-16 11:19:19,200 INFO L226 Difference]: Without dead ends: 552 [2022-11-16 11:19:19,201 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 [2022-11-16 11:19:19,202 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 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 [2022-11-16 11:19:19,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:19:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-16 11:19:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-11-16 11:19:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 534 states have (on average 3.0430711610486894) internal successors, (1625), 551 states have internal predecessors, (1625), 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) [2022-11-16 11:19:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1625 transitions. [2022-11-16 11:19:19,228 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1625 transitions. Word has length 5 [2022-11-16 11:19:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:19,229 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 1625 transitions. [2022-11-16 11:19:19,230 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) [2022-11-16 11:19:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1625 transitions. [2022-11-16 11:19:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:19:19,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:19,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:19:19,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:19:19,231 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)] === [2022-11-16 11:19:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash 666217481, now seen corresponding path program 1 times [2022-11-16 11:19:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:19,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238350066] [2022-11-16 11:19:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:19,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238350066] [2022-11-16 11:19:19,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238350066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:19,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:19,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:19:19,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140007691] [2022-11-16 11:19:19,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:19,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:19:19,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:19:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:19:19,443 INFO L87 Difference]: Start difference. First operand 552 states and 1625 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) [2022-11-16 11:19:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:19,563 INFO L93 Difference]: Finished difference Result 392 states and 1082 transitions. [2022-11-16 11:19:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:19,564 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 [2022-11-16 11:19:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:19,568 INFO L225 Difference]: With dead ends: 392 [2022-11-16 11:19:19,568 INFO L226 Difference]: Without dead ends: 392 [2022-11-16 11:19:19,569 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 [2022-11-16 11:19:19,570 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 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 [2022-11-16 11:19:19,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:19:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-16 11:19:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-11-16 11:19:19,587 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) [2022-11-16 11:19:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1082 transitions. [2022-11-16 11:19:19,591 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1082 transitions. Word has length 5 [2022-11-16 11:19:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:19,591 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 1082 transitions. [2022-11-16 11:19:19,592 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) [2022-11-16 11:19:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1082 transitions. [2022-11-16 11:19:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:19:19,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:19,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:19:19,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash 253147604, now seen corresponding path program 1 times [2022-11-16 11:19:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:19,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895832209] [2022-11-16 11:19:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:19,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:19,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938164652] [2022-11-16 11:19:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:19,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:19,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:19,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:19,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:19:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:19,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:19:19,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:19,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:19,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895832209] [2022-11-16 11:19:19,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:19,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938164652] [2022-11-16 11:19:19,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938164652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:19,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:19,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556577585] [2022-11-16 11:19:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:19:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:19:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:19:19,844 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) [2022-11-16 11:19:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:20,041 INFO L93 Difference]: Finished difference Result 440 states and 1208 transitions. [2022-11-16 11:19:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:19:20,042 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 [2022-11-16 11:19:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:20,045 INFO L225 Difference]: With dead ends: 440 [2022-11-16 11:19:20,045 INFO L226 Difference]: Without dead ends: 440 [2022-11-16 11:19:20,046 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 [2022-11-16 11:19:20,047 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 [2022-11-16 11:19:20,048 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] [2022-11-16 11:19:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-16 11:19:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 416. [2022-11-16 11:19:20,060 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) [2022-11-16 11:19:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1145 transitions. [2022-11-16 11:19:20,062 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1145 transitions. Word has length 7 [2022-11-16 11:19:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:20,063 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 1145 transitions. [2022-11-16 11:19:20,063 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) [2022-11-16 11:19:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1145 transitions. [2022-11-16 11:19:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:19:20,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:20,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:20,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:20,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 241279314, now seen corresponding path program 1 times [2022-11-16 11:19:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:20,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718384451] [2022-11-16 11:19:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:20,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:20,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718384451] [2022-11-16 11:19:20,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718384451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:20,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:20,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:19:20,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854183220] [2022-11-16 11:19:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:20,390 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) [2022-11-16 11:19:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:20,524 INFO L93 Difference]: Finished difference Result 500 states and 1337 transitions. [2022-11-16 11:19:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:20,525 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 [2022-11-16 11:19:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:20,528 INFO L225 Difference]: With dead ends: 500 [2022-11-16 11:19:20,528 INFO L226 Difference]: Without dead ends: 492 [2022-11-16 11:19:20,529 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 [2022-11-16 11:19:20,530 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 [2022-11-16 11:19:20,530 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] [2022-11-16 11:19:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-16 11:19:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 452. [2022-11-16 11:19:20,546 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) [2022-11-16 11:19:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1243 transitions. [2022-11-16 11:19:20,550 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1243 transitions. Word has length 8 [2022-11-16 11:19:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:20,550 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1243 transitions. [2022-11-16 11:19:20,550 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) [2022-11-16 11:19:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1243 transitions. [2022-11-16 11:19:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:19:20,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:20,552 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:20,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:19:20,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:20,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:20,554 INFO L85 PathProgramCache]: Analyzing trace with hash 542985266, now seen corresponding path program 1 times [2022-11-16 11:19:20,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:20,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578460474] [2022-11-16 11:19:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:20,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:20,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:20,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589548934] [2022-11-16 11:19:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:20,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:20,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:20,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:20,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:19:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:20,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:19:20,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:20,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:19:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:20,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578460474] [2022-11-16 11:19:20,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:20,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589548934] [2022-11-16 11:19:20,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589548934] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:20,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:20,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-16 11:19:20,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450316780] [2022-11-16 11:19:20,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:20,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:20,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:20,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:19:20,801 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) [2022-11-16 11:19:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:20,939 INFO L93 Difference]: Finished difference Result 342 states and 882 transitions. [2022-11-16 11:19:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:20,939 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 [2022-11-16 11:19:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:20,942 INFO L225 Difference]: With dead ends: 342 [2022-11-16 11:19:20,942 INFO L226 Difference]: Without dead ends: 314 [2022-11-16 11:19:20,942 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 [2022-11-16 11:19:20,943 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 [2022-11-16 11:19:20,944 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] [2022-11-16 11:19:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-16 11:19:20,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 282. [2022-11-16 11:19:20,954 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) [2022-11-16 11:19:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 739 transitions. [2022-11-16 11:19:20,983 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 739 transitions. Word has length 12 [2022-11-16 11:19:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:20,984 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 739 transitions. [2022-11-16 11:19:20,984 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) [2022-11-16 11:19:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 739 transitions. [2022-11-16 11:19:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:19:20,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:20,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:21,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:19:21,197 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:21,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1694332303, now seen corresponding path program 1 times [2022-11-16 11:19:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:21,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783589341] [2022-11-16 11:19:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:21,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783589341] [2022-11-16 11:19:21,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783589341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:21,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:21,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:21,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623278489] [2022-11-16 11:19:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:21,258 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) [2022-11-16 11:19:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:21,385 INFO L93 Difference]: Finished difference Result 354 states and 913 transitions. [2022-11-16 11:19:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:21,386 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 [2022-11-16 11:19:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:21,388 INFO L225 Difference]: With dead ends: 354 [2022-11-16 11:19:21,388 INFO L226 Difference]: Without dead ends: 354 [2022-11-16 11:19:21,389 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 [2022-11-16 11:19:21,389 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 [2022-11-16 11:19:21,390 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] [2022-11-16 11:19:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-16 11:19:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 282. [2022-11-16 11:19:21,406 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) [2022-11-16 11:19:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 729 transitions. [2022-11-16 11:19:21,408 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 729 transitions. Word has length 13 [2022-11-16 11:19:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:21,409 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 729 transitions. [2022-11-16 11:19:21,409 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) [2022-11-16 11:19:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 729 transitions. [2022-11-16 11:19:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:19:21,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:21,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:19:21,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2091364488, now seen corresponding path program 1 times [2022-11-16 11:19:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:21,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057800276] [2022-11-16 11:19:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:21,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:21,435 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:21,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387697158] [2022-11-16 11:19:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:21,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:21,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:21,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:21,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:19:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:21,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:19:21,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:21,647 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 [2022-11-16 11:19:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:21,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:21,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:21,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057800276] [2022-11-16 11:19:21,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:21,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387697158] [2022-11-16 11:19:21,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387697158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:21,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:21,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:21,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244290483] [2022-11-16 11:19:21,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:21,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:21,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:21,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:21,683 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) [2022-11-16 11:19:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:21,783 INFO L93 Difference]: Finished difference Result 204 states and 468 transitions. [2022-11-16 11:19:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:21,783 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 [2022-11-16 11:19:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:21,785 INFO L225 Difference]: With dead ends: 204 [2022-11-16 11:19:21,785 INFO L226 Difference]: Without dead ends: 192 [2022-11-16 11:19:21,785 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 [2022-11-16 11:19:21,786 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 [2022-11-16 11:19:21,786 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] [2022-11-16 11:19:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-16 11:19:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-16 11:19:21,795 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) [2022-11-16 11:19:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 445 transitions. [2022-11-16 11:19:21,797 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 445 transitions. Word has length 14 [2022-11-16 11:19:21,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:21,797 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 445 transitions. [2022-11-16 11:19:21,797 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) [2022-11-16 11:19:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 445 transitions. [2022-11-16 11:19:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:19:21,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:21,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:21,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:19:22,006 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1380407600, now seen corresponding path program 1 times [2022-11-16 11:19:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:22,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80545244] [2022-11-16 11:19:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:22,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:22,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80545244] [2022-11-16 11:19:22,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80545244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:22,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196923956] [2022-11-16 11:19:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:22,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:22,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:22,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:19:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:19:22,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:19:22,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:22,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196923956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:22,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:22,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 11:19:22,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156183165] [2022-11-16 11:19:22,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:22,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:22,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:22,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:22,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:19:22,219 INFO L87 Difference]: Start difference. First operand 192 states and 445 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) [2022-11-16 11:19:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:22,328 INFO L93 Difference]: Finished difference Result 282 states and 639 transitions. [2022-11-16 11:19:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:22,329 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 [2022-11-16 11:19:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:22,330 INFO L225 Difference]: With dead ends: 282 [2022-11-16 11:19:22,331 INFO L226 Difference]: Without dead ends: 282 [2022-11-16 11:19:22,331 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 [2022-11-16 11:19:22,331 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 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 [2022-11-16 11:19:22,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 10 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:19:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-16 11:19:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 222. [2022-11-16 11:19:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 2.359447004608295) internal successors, (512), 221 states have internal predecessors, (512), 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) [2022-11-16 11:19:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 512 transitions. [2022-11-16 11:19:22,341 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 512 transitions. Word has length 15 [2022-11-16 11:19:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:22,341 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 512 transitions. [2022-11-16 11:19:22,341 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) [2022-11-16 11:19:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 512 transitions. [2022-11-16 11:19:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:19:22,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:22,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:22,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:22,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:22,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:22,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1284888380, now seen corresponding path program 1 times [2022-11-16 11:19:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:22,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005413545] [2022-11-16 11:19:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:22,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748359477] [2022-11-16 11:19:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:22,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:22,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:22,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:22,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:19:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:19:22,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:22,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005413545] [2022-11-16 11:19:22,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748359477] [2022-11-16 11:19:22,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748359477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:22,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:22,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:19:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660549120] [2022-11-16 11:19:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:23,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:19:23,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:23,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:19:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:19:23,003 INFO L87 Difference]: Start difference. First operand 222 states and 512 transitions. Second operand has 4 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) [2022-11-16 11:19:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:23,198 INFO L93 Difference]: Finished difference Result 362 states and 832 transitions. [2022-11-16 11:19:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:19:23,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2022-11-16 11:19:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:23,201 INFO L225 Difference]: With dead ends: 362 [2022-11-16 11:19:23,201 INFO L226 Difference]: Without dead ends: 362 [2022-11-16 11:19:23,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:19:23,202 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 49 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:23,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:19:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-16 11:19:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 264. [2022-11-16 11:19:23,213 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) [2022-11-16 11:19:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 642 transitions. [2022-11-16 11:19:23,215 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 642 transitions. Word has length 15 [2022-11-16 11:19:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:23,215 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 642 transitions. [2022-11-16 11:19:23,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-11-16 11:19:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 642 transitions. [2022-11-16 11:19:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:19:23,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:23,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:23,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:23,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:19:23,431 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1176834765, now seen corresponding path program 1 times [2022-11-16 11:19:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:23,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170880805] [2022-11-16 11:19:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:23,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:23,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799053756] [2022-11-16 11:19:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:23,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:23,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:23,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:23,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:19:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:23,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:19:23,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:24,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:24,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170880805] [2022-11-16 11:19:24,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:24,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799053756] [2022-11-16 11:19:24,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799053756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:24,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:24,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724726065] [2022-11-16 11:19:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:24,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:19:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:19:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:19:24,041 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) [2022-11-16 11:19:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:24,185 INFO L93 Difference]: Finished difference Result 298 states and 674 transitions. [2022-11-16 11:19:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:19:24,186 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 [2022-11-16 11:19:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:24,188 INFO L225 Difference]: With dead ends: 298 [2022-11-16 11:19:24,188 INFO L226 Difference]: Without dead ends: 298 [2022-11-16 11:19:24,188 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 [2022-11-16 11:19:24,189 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 [2022-11-16 11:19:24,189 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] [2022-11-16 11:19:24,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-16 11:19:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 250. [2022-11-16 11:19:24,198 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) [2022-11-16 11:19:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 587 transitions. [2022-11-16 11:19:24,199 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 587 transitions. Word has length 16 [2022-11-16 11:19:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:24,200 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 587 transitions. [2022-11-16 11:19:24,200 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) [2022-11-16 11:19:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 587 transitions. [2022-11-16 11:19:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:19:24,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:24,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:24,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:24,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:24,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:24,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:24,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2006456831, now seen corresponding path program 1 times [2022-11-16 11:19:24,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:24,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557026465] [2022-11-16 11:19:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:24,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:19:24,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557026465] [2022-11-16 11:19:24,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557026465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:24,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491941346] [2022-11-16 11:19:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:24,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:24,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:19:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:24,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:19:24,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:19:24,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:19:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:19:24,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491941346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:19:24,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:19:24,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-16 11:19:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3174001] [2022-11-16 11:19:24,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:19:24,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:19:24,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:19:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:19:24,653 INFO L87 Difference]: Start difference. First operand 250 states and 587 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) [2022-11-16 11:19:24,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:24,922 INFO L93 Difference]: Finished difference Result 516 states and 1166 transitions. [2022-11-16 11:19:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:19:24,923 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 [2022-11-16 11:19:24,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:24,926 INFO L225 Difference]: With dead ends: 516 [2022-11-16 11:19:24,926 INFO L226 Difference]: Without dead ends: 516 [2022-11-16 11:19:24,926 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 [2022-11-16 11:19:24,926 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 128 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:24,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 18 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:19:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-16 11:19:24,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 494. [2022-11-16 11:19:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 487 states have (on average 2.35523613963039) internal successors, (1147), 493 states have internal predecessors, (1147), 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) [2022-11-16 11:19:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1147 transitions. [2022-11-16 11:19:24,943 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1147 transitions. Word has length 17 [2022-11-16 11:19:24,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:24,944 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 1147 transitions. [2022-11-16 11:19:24,945 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) [2022-11-16 11:19:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1147 transitions. [2022-11-16 11:19:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:19:24,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:24,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:24,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:25,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:19:25,152 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2122110329, now seen corresponding path program 1 times [2022-11-16 11:19:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:25,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693466691] [2022-11-16 11:19:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:25,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:25,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:25,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602064372] [2022-11-16 11:19:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:25,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:25,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:25,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:25,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:19:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:19:25,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:25,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:25,587 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 [2022-11-16 11:19:25,612 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-16 11:19:25,613 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 [2022-11-16 11:19:25,723 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 [2022-11-16 11:19:25,893 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 [2022-11-16 11:19:25,956 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 [2022-11-16 11:19:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:26,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:26,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:26,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693466691] [2022-11-16 11:19:26,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:26,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602064372] [2022-11-16 11:19:26,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602064372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:26,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:26,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:19:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061296437] [2022-11-16 11:19:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:26,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:19:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:19:26,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:19:26,022 INFO L87 Difference]: Start difference. First operand 494 states and 1147 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) [2022-11-16 11:19:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:26,218 INFO L93 Difference]: Finished difference Result 572 states and 1297 transitions. [2022-11-16 11:19:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:19:26,219 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 [2022-11-16 11:19:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:26,222 INFO L225 Difference]: With dead ends: 572 [2022-11-16 11:19:26,222 INFO L226 Difference]: Without dead ends: 572 [2022-11-16 11:19:26,223 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 [2022-11-16 11:19:26,223 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, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:26,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 16 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-16 11:19:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-16 11:19:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 515. [2022-11-16 11:19:26,237 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) [2022-11-16 11:19:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1183 transitions. [2022-11-16 11:19:26,239 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1183 transitions. Word has length 17 [2022-11-16 11:19:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:26,240 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 1183 transitions. [2022-11-16 11:19:26,240 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) [2022-11-16 11:19:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1183 transitions. [2022-11-16 11:19:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:19:26,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:26,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:26,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:26,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:19:26,448 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1360910881, now seen corresponding path program 1 times [2022-11-16 11:19:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:26,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125409184] [2022-11-16 11:19:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:26,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:26,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:26,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029584575] [2022-11-16 11:19:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:26,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:26,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:26,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:26,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:19:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:26,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:19:26,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:26,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:26,821 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 [2022-11-16 11:19:26,839 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-16 11:19:26,839 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 [2022-11-16 11:19:26,913 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 [2022-11-16 11:19:27,067 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 [2022-11-16 11:19:27,130 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 [2022-11-16 11:19:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:27,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:27,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:27,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125409184] [2022-11-16 11:19:27,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:27,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029584575] [2022-11-16 11:19:27,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029584575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:27,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:27,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:19:27,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022447546] [2022-11-16 11:19:27,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:27,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:19:27,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:27,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:19:27,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:19:27,197 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) [2022-11-16 11:19:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:27,386 INFO L93 Difference]: Finished difference Result 566 states and 1285 transitions. [2022-11-16 11:19:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:19:27,387 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 [2022-11-16 11:19:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:27,390 INFO L225 Difference]: With dead ends: 566 [2022-11-16 11:19:27,390 INFO L226 Difference]: Without dead ends: 566 [2022-11-16 11:19:27,390 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 [2022-11-16 11:19:27,391 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:27,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 20 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2022-11-16 11:19:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-16 11:19:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 514. [2022-11-16 11:19:27,405 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) [2022-11-16 11:19:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1181 transitions. [2022-11-16 11:19:27,408 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1181 transitions. Word has length 18 [2022-11-16 11:19:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:27,408 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 1181 transitions. [2022-11-16 11:19:27,409 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) [2022-11-16 11:19:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1181 transitions. [2022-11-16 11:19:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:19:27,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:27,410 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] [2022-11-16 11:19:27,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:27,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:19:27,618 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2118177071, now seen corresponding path program 1 times [2022-11-16 11:19:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:27,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902713830] [2022-11-16 11:19:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:27,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:19:27,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617703563] [2022-11-16 11:19:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:27,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:27,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:27,638 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:27,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:19:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:27,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:19:27,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:27,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:27,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:27,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:27,957 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 [2022-11-16 11:19:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:28,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:19:42,805 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 58 DAG size of output: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:19:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:59,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902713830] [2022-11-16 11:19:59,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:19:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617703563] [2022-11-16 11:19:59,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617703563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:19:59,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:19:59,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 11:19:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35041233] [2022-11-16 11:19:59,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:19:59,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:19:59,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:19:59,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:19:59,236 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) [2022-11-16 11:19:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:59,439 INFO L93 Difference]: Finished difference Result 602 states and 1348 transitions. [2022-11-16 11:19:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:19:59,440 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 [2022-11-16 11:19:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:59,443 INFO L225 Difference]: With dead ends: 602 [2022-11-16 11:19:59,443 INFO L226 Difference]: Without dead ends: 602 [2022-11-16 11:19:59,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:59,444 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 140 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:59,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 8 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:19:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-16 11:19:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 486. [2022-11-16 11:19:59,459 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) [2022-11-16 11:19:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1096 transitions. [2022-11-16 11:19:59,461 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1096 transitions. Word has length 22 [2022-11-16 11:19:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:59,461 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 1096 transitions. [2022-11-16 11:19:59,462 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) [2022-11-16 11:19:59,462 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1096 transitions. [2022-11-16 11:19:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:19:59,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:59,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:59,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:59,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:59,675 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:19:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash -564630652, now seen corresponding path program 2 times [2022-11-16 11:19:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:59,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215007379] [2022-11-16 11:19:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:59,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:19:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:59,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215007379] [2022-11-16 11:19:59,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215007379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:59,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699719386] [2022-11-16 11:19:59,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:19:59,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:59,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:59,796 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:59,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:19:59,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:19:59,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:19:59,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:19:59,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 11:20:00,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:00,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699719386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:00,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:00,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-16 11:20:00,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442857271] [2022-11-16 11:20:00,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:00,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:20:00,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:20:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:20:00,199 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) [2022-11-16 11:20:00,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:20:00,229 INFO L93 Difference]: Finished difference Result 533 states and 1193 transitions. [2022-11-16 11:20:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:20:00,230 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 [2022-11-16 11:20:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:20:00,234 INFO L225 Difference]: With dead ends: 533 [2022-11-16 11:20:00,234 INFO L226 Difference]: Without dead ends: 422 [2022-11-16 11:20:00,234 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 [2022-11-16 11:20:00,235 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 [2022-11-16 11:20:00,236 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] [2022-11-16 11:20:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-16 11:20:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-16 11:20:00,252 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) [2022-11-16 11:20:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 945 transitions. [2022-11-16 11:20:00,254 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 945 transitions. Word has length 23 [2022-11-16 11:20:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:20:00,254 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 945 transitions. [2022-11-16 11:20:00,254 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) [2022-11-16 11:20:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 945 transitions. [2022-11-16 11:20:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 11:20:00,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:20:00,258 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:00,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:20:00,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:00,464 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)] === [2022-11-16 11:20:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1881001075, now seen corresponding path program 1 times [2022-11-16 11:20:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:00,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773099210] [2022-11-16 11:20:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:00,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:00,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:20:00,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914072154] [2022-11-16 11:20:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:00,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:00,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:00,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:20:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:00,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:20:00,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:20:00,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:20:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:20:00,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:00,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773099210] [2022-11-16 11:20:00,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:20:00,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914072154] [2022-11-16 11:20:00,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914072154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:20:00,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:20:00,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 11:20:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304007111] [2022-11-16 11:20:00,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:20:00,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:20:00,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:20:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:20:00,856 INFO L87 Difference]: Start difference. First operand 422 states and 945 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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) [2022-11-16 11:20:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:20:01,187 INFO L93 Difference]: Finished difference Result 658 states and 1453 transitions. [2022-11-16 11:20:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:20:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 28 [2022-11-16 11:20:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:20:01,191 INFO L225 Difference]: With dead ends: 658 [2022-11-16 11:20:01,191 INFO L226 Difference]: Without dead ends: 658 [2022-11-16 11:20:01,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:20:01,192 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 207 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:20:01,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 30 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:20:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-16 11:20:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 650. [2022-11-16 11:20:01,209 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) [2022-11-16 11:20:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1449 transitions. [2022-11-16 11:20:01,211 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1449 transitions. Word has length 28 [2022-11-16 11:20:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:20:01,213 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1449 transitions. [2022-11-16 11:20:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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) [2022-11-16 11:20:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1449 transitions. [2022-11-16 11:20:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 11:20:01,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:20:01,217 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] [2022-11-16 11:20:01,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:20:01,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:01,423 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:20:01,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:01,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1274547774, now seen corresponding path program 1 times [2022-11-16 11:20:01,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:01,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706114786] [2022-11-16 11:20:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:01,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:01,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:20:01,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645160027] [2022-11-16 11:20:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:01,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:01,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:01,444 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:01,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:20:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:01,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:20:01,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:02,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:20:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:09,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:09,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706114786] [2022-11-16 11:20:09,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:20:09,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645160027] [2022-11-16 11:20:09,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645160027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:20:09,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:20:09,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-16 11:20:09,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234996519] [2022-11-16 11:20:09,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:20:09,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:20:09,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:09,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:20:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:20:09,508 INFO L87 Difference]: Start difference. First operand 650 states and 1449 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) [2022-11-16 11:20:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:20:13,924 INFO L93 Difference]: Finished difference Result 1292 states and 2795 transitions. [2022-11-16 11:20:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:20:13,924 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 [2022-11-16 11:20:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:20:13,929 INFO L225 Difference]: With dead ends: 1292 [2022-11-16 11:20:13,930 INFO L226 Difference]: Without dead ends: 1292 [2022-11-16 11:20:13,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:20:13,931 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 219 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:20:13,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 54 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:20:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-11-16 11:20:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 932. [2022-11-16 11:20:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 929 states have (on average 2.3132400430570508) internal successors, (2149), 931 states have internal predecessors, (2149), 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) [2022-11-16 11:20:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2149 transitions. [2022-11-16 11:20:13,963 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2149 transitions. Word has length 30 [2022-11-16 11:20:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:20:13,963 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 2149 transitions. [2022-11-16 11:20:13,963 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) [2022-11-16 11:20:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2149 transitions. [2022-11-16 11:20:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 11:20:13,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:20:13,965 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] [2022-11-16 11:20:13,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 11:20:14,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:14,173 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:20:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash 856246312, now seen corresponding path program 1 times [2022-11-16 11:20:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:14,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681465985] [2022-11-16 11:20:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:14,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:20:14,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071201741] [2022-11-16 11:20:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:14,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:14,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:14,218 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:14,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:20:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:15,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 11:20:15,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:15,537 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 62 treesize of output 57 [2022-11-16 11:20:15,542 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 55 treesize of output 107 [2022-11-16 11:20:15,556 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 72 treesize of output 13 [2022-11-16 11:20:15,831 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 21 treesize of output 9 [2022-11-16 11:20:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:15,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:20:16,410 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 [2022-11-16 11:20:16,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:20:16,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-16 11:20:16,593 INFO L321 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2022-11-16 11:20:16,594 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 [2022-11-16 11:20:16,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:20:16,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 87 [2022-11-16 11:20:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:27,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:27,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681465985] [2022-11-16 11:20:27,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:20:27,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071201741] [2022-11-16 11:20:27,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071201741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:20:27,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:20:27,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-16 11:20:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974911092] [2022-11-16 11:20:27,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:20:27,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:20:27,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:20:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:20:27,073 INFO L87 Difference]: Start difference. First operand 932 states and 2149 transitions. Second operand has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 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) [2022-11-16 11:20:37,256 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 107 DAG size of output: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:20:43,361 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 81 DAG size of output: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:21:02,523 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 102 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:21:13,447 WARN L233 SmtUtils]: Spent 9.85s on a formula simplification. DAG size of input: 147 DAG size of output: 137 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:21:16,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 11:21:25,445 WARN L233 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 96 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:21:36,528 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 141 DAG size of output: 135 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:21:38,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 11:22:31,582 WARN L233 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 101 DAG size of output: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:22:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:36,407 INFO L93 Difference]: Finished difference Result 1959 states and 4348 transitions. [2022-11-16 11:22:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 11:22:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 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 [2022-11-16 11:22:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:36,416 INFO L225 Difference]: With dead ends: 1959 [2022-11-16 11:22:36,416 INFO L226 Difference]: Without dead ends: 1959 [2022-11-16 11:22:36,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 108.1s TimeCoverageRelationStatistics Valid=591, Invalid=3965, Unknown=0, NotChecked=0, Total=4556 [2022-11-16 11:22:36,418 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 417 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:36,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 116 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2119 Invalid, 1 Unknown, 0 Unchecked, 27.0s Time] [2022-11-16 11:22:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2022-11-16 11:22:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1266. [2022-11-16 11:22:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1263 states have (on average 2.344418052256532) internal successors, (2961), 1265 states have internal predecessors, (2961), 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) [2022-11-16 11:22:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2961 transitions. [2022-11-16 11:22:36,467 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2961 transitions. Word has length 31 [2022-11-16 11:22:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:36,468 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 2961 transitions. [2022-11-16 11:22:36,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 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) [2022-11-16 11:22:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2961 transitions. [2022-11-16 11:22:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 11:22:36,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:36,470 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] [2022-11-16 11:22:36,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:36,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:22:36,678 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:22:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash -770689930, now seen corresponding path program 2 times [2022-11-16 11:22:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:36,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004436840] [2022-11-16 11:22:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:36,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:36,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:22:36,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983947622] [2022-11-16 11:22:36,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:36,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:36,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:36,704 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:36,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:22:36,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:22:36,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:36,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:22:36,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-16 11:22:37,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:37,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:37,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004436840] [2022-11-16 11:22:37,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:22:37,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983947622] [2022-11-16 11:22:37,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983947622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:37,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:37,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:22:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358259090] [2022-11-16 11:22:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:37,249 INFO L87 Difference]: Start difference. First operand 1266 states and 2961 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) [2022-11-16 11:22:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:37,276 INFO L93 Difference]: Finished difference Result 1303 states and 3025 transitions. [2022-11-16 11:22:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:37,277 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 34 [2022-11-16 11:22:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:37,283 INFO L225 Difference]: With dead ends: 1303 [2022-11-16 11:22:37,283 INFO L226 Difference]: Without dead ends: 1256 [2022-11-16 11:22:37,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:22:37,284 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 [2022-11-16 11:22:37,284 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] [2022-11-16 11:22:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-11-16 11:22:37,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1210. [2022-11-16 11:22:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1207 states have (on average 2.3214581607290805) internal successors, (2802), 1209 states have internal predecessors, (2802), 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) [2022-11-16 11:22:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 2802 transitions. [2022-11-16 11:22:37,316 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 2802 transitions. Word has length 34 [2022-11-16 11:22:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:37,316 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 2802 transitions. [2022-11-16 11:22:37,316 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) [2022-11-16 11:22:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 2802 transitions. [2022-11-16 11:22:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 11:22:37,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:37,319 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, 1, 1, 1, 1, 1] [2022-11-16 11:22:37,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:22:37,525 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:22:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1909831656, now seen corresponding path program 1 times [2022-11-16 11:22:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:37,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852241912] [2022-11-16 11:22:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:37,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:22:37,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621701252] [2022-11-16 11:22:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:37,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:37,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:37,550 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:37,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:22:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:37,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:22:37,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-16 11:22:37,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-16 11:22:37,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:37,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852241912] [2022-11-16 11:22:37,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:22:37,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621701252] [2022-11-16 11:22:37,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621701252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:37,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:37,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 11:22:37,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122464548] [2022-11-16 11:22:37,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:37,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:22:37,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:22:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:22:37,847 INFO L87 Difference]: Start difference. First operand 1210 states and 2802 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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) [2022-11-16 11:22:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:38,071 INFO L93 Difference]: Finished difference Result 3216 states and 6743 transitions. [2022-11-16 11:22:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:22:38,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 39 [2022-11-16 11:22:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:38,091 INFO L225 Difference]: With dead ends: 3216 [2022-11-16 11:22:38,096 INFO L226 Difference]: Without dead ends: 3216 [2022-11-16 11:22:38,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:22:38,097 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 168 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:38,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 20 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:22:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2022-11-16 11:22:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3140. [2022-11-16 11:22:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3137 states have (on average 2.1007331845712462) internal successors, (6590), 3139 states have internal predecessors, (6590), 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) [2022-11-16 11:22:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 6590 transitions. [2022-11-16 11:22:38,203 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 6590 transitions. Word has length 39 [2022-11-16 11:22:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:38,204 INFO L495 AbstractCegarLoop]: Abstraction has 3140 states and 6590 transitions. [2022-11-16 11:22:38,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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) [2022-11-16 11:22:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 6590 transitions. [2022-11-16 11:22:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:22:38,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:38,210 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] [2022-11-16 11:22:38,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:38,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:22:38,416 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:22:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -485387403, now seen corresponding path program 1 times [2022-11-16 11:22:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:38,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940752274] [2022-11-16 11:22:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:38,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:22:38,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799711003] [2022-11-16 11:22:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:38,445 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:38,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:22:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:38,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:22:38,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-16 11:22:38,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-16 11:22:38,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:38,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940752274] [2022-11-16 11:22:38,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:22:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799711003] [2022-11-16 11:22:38,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799711003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:38,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:38,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 11:22:38,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153629512] [2022-11-16 11:22:38,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:38,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:22:38,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:38,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:22:38,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:22:38,834 INFO L87 Difference]: Start difference. First operand 3140 states and 6590 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) [2022-11-16 11:22:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:39,147 INFO L93 Difference]: Finished difference Result 6258 states and 12701 transitions. [2022-11-16 11:22:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:22:39,147 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 [2022-11-16 11:22:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:39,171 INFO L225 Difference]: With dead ends: 6258 [2022-11-16 11:22:39,171 INFO L226 Difference]: Without dead ends: 6258 [2022-11-16 11:22:39,171 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 [2022-11-16 11:22:39,172 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 273 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:39,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 34 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:22:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2022-11-16 11:22:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 6158. [2022-11-16 11:22:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 6155 states have (on average 2.0352558895207147) internal successors, (12527), 6157 states have internal predecessors, (12527), 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) [2022-11-16 11:22:39,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 12527 transitions. [2022-11-16 11:22:39,399 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 12527 transitions. Word has length 45 [2022-11-16 11:22:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:39,400 INFO L495 AbstractCegarLoop]: Abstraction has 6158 states and 12527 transitions. [2022-11-16 11:22:39,400 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) [2022-11-16 11:22:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 12527 transitions. [2022-11-16 11:22:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 11:22:39,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:39,413 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] [2022-11-16 11:22:39,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 11:22:39,620 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 11:22:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1401025142, now seen corresponding path program 1 times [2022-11-16 11:22:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098576762] [2022-11-16 11:22:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:39,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:22:39,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307649079] [2022-11-16 11:22:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:39,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:39,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:39,644 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:39,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee9af67-91de-4117-bf5d-19d57fd994c3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:22:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:40,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-16 11:22:40,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:40,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,298 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 [2022-11-16 11:22:40,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,308 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 [2022-11-16 11:22:40,354 INFO L321 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2022-11-16 11:22:40,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 30 treesize of output 44 [2022-11-16 11:22:40,579 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 [2022-11-16 11:22:41,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 15 [2022-11-16 11:22:41,585 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 [2022-11-16 11:22:42,239 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 [2022-11-16 11:22:42,272 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 [2022-11-16 11:22:42,572 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 [2022-11-16 11:22:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:42,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:11,323 WARN L233 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 290 DAG size of output: 219 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:23:46,173 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 223 DAG size of output: 211 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:14,442 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse41 (mod (+ 2 c_~first~0) 4294967296)) (.cse5 (mod (mod (mod (+ c_~next~0 1) 4294967296) (mod c_~buffer_size~0 4294967296)) 4294967296))) (let ((.cse2 (<= .cse5 2147483647)) (.cse1 (mod c_~next~0 4294967296)) (.cse9 (<= .cse41 2147483647))) (let ((.cse7 (not .cse9)) (.cse6 (+ |c_~#buffer~0.offset| .cse41)) (.cse0 (+ .cse1 |c_~#buffer~0.offset|)) (.cse23 (not .cse2)) (.cse3 (+ |c_~#buffer~0.offset| .cse5))) (or (and (not (<= 4294967296 .cse0)) (or (not (<= 0 .cse0)) (not (<= .cse1 2147483647)))) (not (< 0 .cse1)) (let ((.cse4 (select |c_#length| |c_~#buffer~0.base|))) (and (or .cse2 (not (<= .cse3 (+ .cse4 4294967295)))) (not (<= (+ |c_~#buffer~0.offset| .cse5 1) .cse4)))) (and (not (<= 4294967296 .cse6)) (or (not (<= 0 .cse6)) .cse7)) (let ((.cse40 (mod (+ c_~first~0 1) 4294967296)) (.cse14 (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|))) (let ((.cse12 (mod .cse14 256)) (.cse27 (<= .cse40 2147483647))) (let ((.cse8 (not .cse27)) (.cse16 (+ |c_~#buffer~0.offset| .cse40)) (.cse11 (+ |c_~#buffer~0.offset| .cse5 (- 4294967296))) (.cse13 (+ |c_~#buffer~0.offset| (- 4294967296) .cse41)) (.cse15 (+ |c_t1Thread1of1ForFork0_~i~0#1| 1)) (.cse25 (+ |c_~#buffer~0.offset| .cse40 (- 4294967296))) (.cse18 (+ .cse1 |c_~#buffer~0.offset| (- 4294967296))) (.cse28 (<= .cse12 127))) (and (or (and (or .cse8 (and (or (and (or .cse9 (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse10 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= (select (store .cse10 .cse11 .cse12) .cse13) .cse14) (not (= .cse15 (select .cse10 .cse16)))))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse17 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= .cse14 (select (store .cse17 .cse11 .cse12) .cse13)) (not (= (select .cse17 .cse16) .cse15))))))) (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse19 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= (select (store .cse19 .cse11 .cse12) .cse6) .cse14) (not (= .cse15 (select .cse19 .cse16)))))) .cse7)) .cse2) (or (and (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse20 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= (select (store .cse20 .cse3 .cse12) .cse6) .cse14) (not (= .cse15 (select .cse20 .cse16)))))) .cse7) (or .cse9 (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse21 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= .cse14 (select (store .cse21 .cse3 .cse12) .cse13)) (not (= .cse15 (select .cse21 .cse16)))))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse22 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= .cse14 (select (store .cse22 .cse3 .cse12) .cse13)) (not (= (select .cse22 .cse16) .cse15)))))))) .cse23))) (or (and (or .cse9 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse24 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= .cse14 (select (store .cse24 .cse11 .cse12) .cse13)) (not (= .cse15 (select .cse24 .cse25))))))) (or .cse7 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse26 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= .cse14 (select (store .cse26 .cse11 .cse12) .cse6)) (not (= .cse15 (select .cse26 .cse25)))))))) .cse27)) (not .cse28)) (or (let ((.cse30 (+ (- 256) .cse12))) (and (or (and (or (and (or .cse7 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse29 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= .cse14 (select (store .cse29 .cse3 .cse30) .cse6)) (not (= .cse15 (select .cse29 .cse25))))))) (or .cse9 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse31 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= (select (store .cse31 .cse3 .cse30) .cse13) .cse14) (not (= .cse15 (select .cse31 .cse25)))))))) .cse27) (or (and (or .cse9 (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse32 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= (select (store .cse32 .cse3 .cse30) .cse13) .cse14) (not (= (select .cse32 .cse16) .cse15))))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse33 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (not (= .cse15 (select .cse33 .cse16))) (= .cse14 (select (store .cse33 .cse3 .cse30) .cse13))))))) (or .cse7 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse34 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (not (= .cse15 (select .cse34 .cse16))) (= .cse14 (select (store .cse34 .cse3 .cse30) .cse6))))))) .cse8)) .cse23) (or (and (or .cse7 (and (or .cse8 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse35 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= .cse14 (select (store .cse35 .cse11 .cse30) .cse6)) (not (= .cse15 (select .cse35 .cse16))))))) (or .cse27 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse36 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= (select (store .cse36 .cse11 .cse30) .cse6) .cse14) (not (= .cse15 (select .cse36 .cse25))))))))) (or .cse9 (and (or .cse8 (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse37 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (not (= .cse15 (select .cse37 .cse16))) (= (select (store .cse37 .cse11 .cse30) .cse13) .cse14)))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse38 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= .cse14 (select (store .cse38 .cse11 .cse30) .cse13)) (not (= (select .cse38 .cse16) .cse15))))))) (or .cse27 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse39 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse18 v_ArrVal_1703))) (or (= .cse14 (select (store .cse39 .cse11 .cse30) .cse13)) (not (= .cse15 (select .cse39 .cse25)))))))))) .cse2))) .cse28))))) (not (<= (mod c_~send~0 256) 0)) (and (not (<= 4294967296 .cse3)) (or .cse23 (not (<= 0 .cse3)))) (not (< 0 .cse5)))))) is different from false [2022-11-16 11:24:33,593 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse41 (mod (+ 2 c_~first~0) 4294967296)) (.cse5 (mod (mod (mod (+ c_~next~0 1) 4294967296) (mod c_~buffer_size~0 4294967296)) 4294967296))) (let ((.cse2 (<= .cse5 2147483647)) (.cse1 (mod c_~next~0 4294967296)) (.cse16 (<= .cse41 2147483647))) (let ((.cse6 (+ |c_~#buffer~0.offset| .cse41)) (.cse7 (not .cse16)) (.cse3 (+ |c_~#buffer~0.offset| .cse5)) (.cse0 (+ .cse1 |c_~#buffer~0.offset|)) (.cse8 (not .cse2))) (or (and (not (<= 4294967296 .cse0)) (or (not (<= 0 .cse0)) (not (<= .cse1 2147483647)))) (not (< 0 .cse1)) (let ((.cse4 (select |c_#length| |c_~#buffer~0.base|))) (and (or .cse2 (not (<= .cse3 (+ .cse4 4294967295)))) (not (<= (+ |c_~#buffer~0.offset| .cse5 1) .cse4)))) (and (not (<= 4294967296 .cse6)) (or (not (<= 0 .cse6)) .cse7)) (and (not (<= 4294967296 .cse3)) (or .cse8 (not (<= 0 .cse3)))) (let ((.cse40 (mod (+ c_~first~0 1) 4294967296)) (.cse12 (+ |c_t1Thread1of1ForFork0_~i~0#1| 3))) (let ((.cse30 (mod .cse12 256)) (.cse9 (<= .cse40 2147483647))) (let ((.cse14 (+ |c_~#buffer~0.offset| .cse40 (- 4294967296))) (.cse19 (not .cse9)) (.cse25 (+ |c_~#buffer~0.offset| .cse5 (- 4294967296))) (.cse15 (+ .cse1 |c_~#buffer~0.offset| (- 4294967296))) (.cse18 (+ |c_~#buffer~0.offset| (- 4294967296) .cse41)) (.cse13 (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|)) (.cse21 (+ |c_~#buffer~0.offset| .cse40)) (.cse31 (<= .cse30 127))) (and (or (let ((.cse11 (+ .cse30 (- 256)))) (and (or (and (or .cse9 (and (or .cse7 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse10 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse10 .cse3 .cse11) .cse6) .cse12) (not (= .cse13 (select .cse10 .cse14))))))) (or .cse16 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse17 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse17 .cse3 .cse11) .cse18) .cse12) (not (= .cse13 (select .cse17 .cse14))))))))) (or .cse19 (and (or .cse16 (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse20 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse20 .cse3 .cse11) .cse18) .cse12) (not (= (select .cse20 .cse21) .cse13))))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse22 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= (select (store .cse22 .cse3 .cse11) .cse18) .cse12) (not (= .cse13 (select .cse22 .cse21)))))))) (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse23 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= (select (store .cse23 .cse3 .cse11) .cse6) .cse12) (not (= .cse13 (select .cse23 .cse21)))))) .cse7)))) .cse8) (or (and (or (and (or .cse9 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse24 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (not (= .cse13 (select .cse24 .cse14))) (= (select (store .cse24 .cse25 .cse11) .cse6) .cse12))))) (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse26 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= .cse12 (select (store .cse26 .cse25 .cse11) .cse6)) (not (= .cse13 (select .cse26 .cse21)))))) .cse19)) .cse7) (or .cse16 (and (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse27 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse27 .cse25 .cse11) .cse18) .cse12) (not (= .cse13 (select .cse27 .cse14)))))) .cse9) (or (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse28 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse28 .cse25 .cse11) .cse18) .cse12) (not (= (select .cse28 .cse21) .cse13))))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse29 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (not (= .cse13 (select .cse29 .cse21))) (= (select (store .cse29 .cse25 .cse11) .cse18) .cse12))))) .cse19)))) .cse2))) .cse31) (or (and (or .cse9 (and (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse32 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse32 .cse25 .cse30) .cse6) .cse12) (not (= .cse13 (select .cse32 .cse14)))))) .cse7) (or .cse16 (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse33 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse33 .cse25 .cse30) .cse18) .cse12) (not (= .cse13 (select .cse33 .cse14))))))))) (or .cse19 (and (or .cse2 (and (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse34 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (not (= .cse13 (select .cse34 .cse21))) (= (select (store .cse34 .cse25 .cse30) .cse6) .cse12)))) .cse7) (or .cse16 (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse35 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (not (= (select .cse35 .cse21) .cse13)) (= (select (store .cse35 .cse25 .cse30) .cse18) .cse12)))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse36 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= (select (store .cse36 .cse25 .cse30) .cse18) .cse12) (not (= .cse13 (select .cse36 .cse21)))))))))) (or (and (or (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse37 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (not (= .cse13 (select .cse37 .cse21))) (= .cse12 (select (store .cse37 .cse3 .cse30) .cse6))))) .cse7) (or (and (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse38 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse15 v_ArrVal_1703))) (or (= (select (store .cse38 .cse3 .cse30) .cse18) .cse12) (not (= (select .cse38 .cse21) .cse13))))) (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1703 Int)) (let ((.cse39 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1701) |c_~#buffer~0.base|) .cse0 v_ArrVal_1703))) (or (= (select (store .cse39 .cse3 .cse30) .cse18) .cse12) (not (= .cse13 (select .cse39 .cse21))))))) .cse16)) .cse8)))) (not .cse31)))))) (not (< 0 .cse5)))))) is different from false [2022-11-16 11:25:33,257 WARN L233 SmtUtils]: Spent 41.71s on a formula simplification. DAG size of input: 218 DAG size of output: 208 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:30:09,558 WARN L233 SmtUtils]: Spent 2.66m on a formula simplification that was a NOOP. DAG size: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:33:05,502 WARN L233 SmtUtils]: Spent 35.82s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:33:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-16 11:33:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:30,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098576762] [2022-11-16 11:33:30,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:30,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307649079] [2022-11-16 11:33:30,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307649079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:30,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:30,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 43 [2022-11-16 11:33:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571678011] [2022-11-16 11:33:30,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 11:33:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:30,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 11:33:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1539, Unknown=14, NotChecked=166, Total=1980 [2022-11-16 11:33:30,954 INFO L87 Difference]: Start difference. First operand 6158 states and 12527 transitions. Second operand has 45 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 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)