/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 13:08:56,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 13:08:56,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 13:08:57,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 13:08:57,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 13:08:57,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 13:08:57,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 13:08:57,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 13:08:57,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 13:08:57,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 13:08:57,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 13:08:57,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 13:08:57,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 13:08:57,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 13:08:57,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 13:08:57,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 13:08:57,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 13:08:57,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 13:08:57,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 13:08:57,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 13:08:57,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 13:08:57,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 13:08:57,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 13:08:57,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 13:08:57,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 13:08:57,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 13:08:57,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 13:08:57,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 13:08:57,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 13:08:57,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 13:08:57,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 13:08:57,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 13:08:57,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 13:08:57,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 13:08:57,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 13:08:57,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 13:08:57,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 13:08:57,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 13:08:57,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 13:08:57,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 13:08:57,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 13:08:57,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 13:08:57,184 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 13:08:57,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 13:08:57,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 13:08:57,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 13:08:57,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 13:08:57,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 13:08:57,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 13:08:57,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 13:08:57,190 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 13:08:57,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 13:08:57,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 13:08:57,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 13:08:57,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 13:08:57,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 13:08:57,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 13:08:57,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 13:08:57,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 13:08:57,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 13:08:57,194 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 13:08:57,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 13:08:57,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 13:08:57,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 13:08:57,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 13:08:57,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 13:08:57,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 13:08:57,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 13:08:57,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:08:57,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 13:08:57,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 13:08:57,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 13:08:57,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 13:08:57,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 13:08:57,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 13:08:57,197 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 13:08:57,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 13:08:57,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 13:08:57,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 13:08:57,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 13:08:57,643 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 13:08:57,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-10-16 13:08:57,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/230cd37ae/b9ce943a667d460abe962c5ee0595471/FLAG231df55c9 [2022-10-16 13:08:58,864 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 13:08:58,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-10-16 13:08:58,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/230cd37ae/b9ce943a667d460abe962c5ee0595471/FLAG231df55c9 [2022-10-16 13:08:59,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/230cd37ae/b9ce943a667d460abe962c5ee0595471 [2022-10-16 13:08:59,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 13:08:59,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 13:08:59,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 13:08:59,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 13:08:59,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 13:08:59,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:08:59" (1/1) ... [2022-10-16 13:08:59,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df13190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:08:59, skipping insertion in model container [2022-10-16 13:08:59,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:08:59" (1/1) ... [2022-10-16 13:08:59,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 13:08:59,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 13:09:00,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i[158694,158707] [2022-10-16 13:09:00,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:09:01,025 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 13:09:01,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i[158694,158707] [2022-10-16 13:09:01,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:09:01,609 INFO L208 MainTranslator]: Completed translation [2022-10-16 13:09:01,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01 WrapperNode [2022-10-16 13:09:01,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 13:09:01,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 13:09:01,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 13:09:01,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 13:09:01,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:01,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:01,865 INFO L138 Inliner]: procedures = 181, calls = 601, calls flagged for inlining = 90, calls inlined = 85, statements flattened = 2036 [2022-10-16 13:09:01,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 13:09:01,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 13:09:01,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 13:09:01,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 13:09:01,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:01,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:01,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:01,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:02,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:02,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:02,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:02,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:02,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 13:09:02,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 13:09:02,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 13:09:02,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 13:09:02,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (1/1) ... [2022-10-16 13:09:02,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:09:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:02,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 13:09:02,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 13:09:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2022-10-16 13:09:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2022-10-16 13:09:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 13:09:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-10-16 13:09:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 13:09:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 13:09:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-16 13:09:02,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-16 13:09:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 13:09:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-10-16 13:09:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-10-16 13:09:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-16 13:09:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-16 13:09:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-16 13:09:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-16 13:09:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 13:09:02,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 13:09:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-16 13:09:02,243 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-16 13:09:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2022-10-16 13:09:02,243 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2022-10-16 13:09:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-16 13:09:02,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-16 13:09:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-16 13:09:02,244 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-16 13:09:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2022-10-16 13:09:02,244 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2022-10-16 13:09:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 13:09:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2022-10-16 13:09:02,244 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2022-10-16 13:09:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-16 13:09:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-16 13:09:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-16 13:09:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-16 13:09:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-10-16 13:09:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-10-16 13:09:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 13:09:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 13:09:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-16 13:09:02,246 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-16 13:09:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 13:09:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-10-16 13:09:02,246 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-10-16 13:09:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-10-16 13:09:02,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-10-16 13:09:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 13:09:02,247 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2022-10-16 13:09:02,247 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2022-10-16 13:09:02,247 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2022-10-16 13:09:02,247 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2022-10-16 13:09:02,247 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-10-16 13:09:02,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-10-16 13:09:02,249 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2022-10-16 13:09:02,249 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2022-10-16 13:09:02,249 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2022-10-16 13:09:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2022-10-16 13:09:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 13:09:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 13:09:02,250 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-10-16 13:09:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-10-16 13:09:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2022-10-16 13:09:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2022-10-16 13:09:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-10-16 13:09:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-10-16 13:09:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 13:09:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-16 13:09:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-16 13:09:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2022-10-16 13:09:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2022-10-16 13:09:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-10-16 13:09:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-10-16 13:09:02,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 13:09:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-10-16 13:09:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-10-16 13:09:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 13:09:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-10-16 13:09:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-10-16 13:09:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2022-10-16 13:09:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2022-10-16 13:09:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-16 13:09:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-16 13:09:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-16 13:09:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-16 13:09:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-16 13:09:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-16 13:09:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-16 13:09:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-16 13:09:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-16 13:09:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-16 13:09:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-16 13:09:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-16 13:09:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 13:09:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-10-16 13:09:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-10-16 13:09:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-10-16 13:09:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-10-16 13:09:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 13:09:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-16 13:09:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-16 13:09:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 13:09:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 13:09:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-10-16 13:09:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-10-16 13:09:02,784 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 13:09:02,788 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 13:09:03,232 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-16 13:09:04,699 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 13:09:04,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 13:09:04,717 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 13:09:04,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:09:04 BoogieIcfgContainer [2022-10-16 13:09:04,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 13:09:04,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 13:09:04,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 13:09:04,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 13:09:04,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:08:59" (1/3) ... [2022-10-16 13:09:04,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f0d554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:09:04, skipping insertion in model container [2022-10-16 13:09:04,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:09:01" (2/3) ... [2022-10-16 13:09:04,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f0d554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:09:04, skipping insertion in model container [2022-10-16 13:09:04,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:09:04" (3/3) ... [2022-10-16 13:09:04,733 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2022-10-16 13:09:04,758 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 13:09:04,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-10-16 13:09:04,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 13:09:04,856 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7312c21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 13:09:04,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-10-16 13:09:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 577 states have (on average 1.4263431542461005) internal successors, (823), 642 states have internal predecessors, (823), 152 states have call successors, (152), 43 states have call predecessors, (152), 42 states have return successors, (147), 145 states have call predecessors, (147), 147 states have call successors, (147) [2022-10-16 13:09:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 13:09:04,883 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:04,884 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:04,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1129710662, now seen corresponding path program 1 times [2022-10-16 13:09:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:04,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113514724] [2022-10-16 13:09:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:04,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:09:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:09:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 13:09:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 13:09:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 13:09:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 13:09:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:05,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113514724] [2022-10-16 13:09:05,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113514724] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:05,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:05,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:09:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325301200] [2022-10-16 13:09:05,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:05,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:09:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:09:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:09:05,738 INFO L87 Difference]: Start difference. First operand has 822 states, 577 states have (on average 1.4263431542461005) internal successors, (823), 642 states have internal predecessors, (823), 152 states have call successors, (152), 43 states have call predecessors, (152), 42 states have return successors, (147), 145 states have call predecessors, (147), 147 states have call successors, (147) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:09:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:08,073 INFO L93 Difference]: Finished difference Result 2573 states and 3684 transitions. [2022-10-16 13:09:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:09:08,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2022-10-16 13:09:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:08,110 INFO L225 Difference]: With dead ends: 2573 [2022-10-16 13:09:08,110 INFO L226 Difference]: Without dead ends: 1729 [2022-10-16 13:09:08,125 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 [2022-10-16 13:09:08,129 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 1470 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:08,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2530 Invalid, 1249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [445 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 13:09:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2022-10-16 13:09:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1499. [2022-10-16 13:09:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1092 states have (on average 1.4084249084249085) internal successors, (1538), 1157 states have internal predecessors, (1538), 277 states have call successors, (277), 82 states have call predecessors, (277), 82 states have return successors, (277), 273 states have call predecessors, (277), 277 states have call successors, (277) [2022-10-16 13:09:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2092 transitions. [2022-10-16 13:09:08,358 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2092 transitions. Word has length 44 [2022-10-16 13:09:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:08,359 INFO L495 AbstractCegarLoop]: Abstraction has 1499 states and 2092 transitions. [2022-10-16 13:09:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:09:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2092 transitions. [2022-10-16 13:09:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 13:09:08,368 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:08,368 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:08,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 13:09:08,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 826786842, now seen corresponding path program 1 times [2022-10-16 13:09:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:08,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197630602] [2022-10-16 13:09:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:09:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:08,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:09:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 13:09:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 13:09:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 13:09:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 13:09:08,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:08,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197630602] [2022-10-16 13:09:08,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197630602] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:08,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:08,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:09:08,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088990192] [2022-10-16 13:09:08,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:08,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:09:08,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:09:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:09:08,636 INFO L87 Difference]: Start difference. First operand 1499 states and 2092 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:09:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:10,425 INFO L93 Difference]: Finished difference Result 4340 states and 6109 transitions. [2022-10-16 13:09:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:09:10,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-10-16 13:09:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:10,452 INFO L225 Difference]: With dead ends: 4340 [2022-10-16 13:09:10,452 INFO L226 Difference]: Without dead ends: 2855 [2022-10-16 13:09:10,458 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 [2022-10-16 13:09:10,466 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 1130 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:10,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 2463 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 13:09:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2022-10-16 13:09:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2467. [2022-10-16 13:09:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 1806 states have (on average 1.398671096345515) internal successors, (2526), 1884 states have internal predecessors, (2526), 458 states have call successors, (458), 155 states have call predecessors, (458), 155 states have return successors, (458), 451 states have call predecessors, (458), 458 states have call successors, (458) [2022-10-16 13:09:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3442 transitions. [2022-10-16 13:09:10,694 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3442 transitions. Word has length 46 [2022-10-16 13:09:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:10,698 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 3442 transitions. [2022-10-16 13:09:10,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:09:10,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3442 transitions. [2022-10-16 13:09:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-16 13:09:10,710 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:10,710 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:10,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 13:09:10,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1336852910, now seen corresponding path program 1 times [2022-10-16 13:09:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:10,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859482181] [2022-10-16 13:09:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:09:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:09:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 13:09:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 13:09:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 13:09:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:09:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 13:09:10,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:10,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859482181] [2022-10-16 13:09:10,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859482181] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:10,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:10,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:09:10,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295239292] [2022-10-16 13:09:10,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:09:10,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:09:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:09:10,962 INFO L87 Difference]: Start difference. First operand 2467 states and 3442 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:09:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:12,952 INFO L93 Difference]: Finished difference Result 7229 states and 10155 transitions. [2022-10-16 13:09:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:09:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2022-10-16 13:09:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:12,991 INFO L225 Difference]: With dead ends: 7229 [2022-10-16 13:09:12,991 INFO L226 Difference]: Without dead ends: 4776 [2022-10-16 13:09:13,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:09:13,005 INFO L413 NwaCegarLoop]: 1184 mSDtfsCounter, 1223 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:13,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 2461 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 13:09:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2022-10-16 13:09:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4159. [2022-10-16 13:09:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4159 states, 3072 states have (on average 1.3896484375) internal successors, (4269), 3177 states have internal predecessors, (4269), 753 states have call successors, (753), 286 states have call predecessors, (753), 286 states have return successors, (753), 735 states have call predecessors, (753), 753 states have call successors, (753) [2022-10-16 13:09:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 5775 transitions. [2022-10-16 13:09:13,345 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 5775 transitions. Word has length 52 [2022-10-16 13:09:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:13,346 INFO L495 AbstractCegarLoop]: Abstraction has 4159 states and 5775 transitions. [2022-10-16 13:09:13,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:09:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 5775 transitions. [2022-10-16 13:09:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 13:09:13,347 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:13,347 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:13,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 13:09:13,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2015740200, now seen corresponding path program 1 times [2022-10-16 13:09:13,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:13,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970741087] [2022-10-16 13:09:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:13,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:09:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:09:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 13:09:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 13:09:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 13:09:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 13:09:13,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:13,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970741087] [2022-10-16 13:09:13,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970741087] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:13,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:13,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:09:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763075723] [2022-10-16 13:09:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:13,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:09:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:13,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:09:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:09:13,517 INFO L87 Difference]: Start difference. First operand 4159 states and 5775 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:09:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:15,604 INFO L93 Difference]: Finished difference Result 11903 states and 16711 transitions. [2022-10-16 13:09:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:09:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-10-16 13:09:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:15,670 INFO L225 Difference]: With dead ends: 11903 [2022-10-16 13:09:15,671 INFO L226 Difference]: Without dead ends: 7758 [2022-10-16 13:09:15,692 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 [2022-10-16 13:09:15,699 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 1137 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:15,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 3331 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 13:09:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2022-10-16 13:09:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 6830. [2022-10-16 13:09:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 5130 states have (on average 1.39317738791423) internal successors, (7147), 5263 states have internal predecessors, (7147), 1174 states have call successors, (1174), 478 states have call predecessors, (1174), 478 states have return successors, (1174), 1148 states have call predecessors, (1174), 1174 states have call successors, (1174) [2022-10-16 13:09:16,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 9495 transitions. [2022-10-16 13:09:16,204 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 9495 transitions. Word has length 49 [2022-10-16 13:09:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:16,205 INFO L495 AbstractCegarLoop]: Abstraction has 6830 states and 9495 transitions. [2022-10-16 13:09:16,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:09:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 9495 transitions. [2022-10-16 13:09:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-16 13:09:16,213 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:16,214 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:16,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 13:09:16,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 966834530, now seen corresponding path program 1 times [2022-10-16 13:09:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:16,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740409122] [2022-10-16 13:09:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:16,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:16,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020166664] [2022-10-16 13:09:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:16,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:16,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:16,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:16,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 13:09:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:16,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:16,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-16 13:09:16,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:16,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:16,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740409122] [2022-10-16 13:09:16,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:16,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020166664] [2022-10-16 13:09:16,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020166664] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:16,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:16,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:16,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345930375] [2022-10-16 13:09:16,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:16,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:16,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:16,748 INFO L87 Difference]: Start difference. First operand 6830 states and 9495 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:17,227 INFO L93 Difference]: Finished difference Result 13635 states and 18960 transitions. [2022-10-16 13:09:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:17,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-10-16 13:09:17,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:17,277 INFO L225 Difference]: With dead ends: 13635 [2022-10-16 13:09:17,277 INFO L226 Difference]: Without dead ends: 6830 [2022-10-16 13:09:17,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:17,312 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 1053 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:17,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1075 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6830 states. [2022-10-16 13:09:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6830 to 6830. [2022-10-16 13:09:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 5130 states have (on average 1.3916179337231969) internal successors, (7139), 5263 states have internal predecessors, (7139), 1174 states have call successors, (1174), 478 states have call predecessors, (1174), 478 states have return successors, (1174), 1148 states have call predecessors, (1174), 1174 states have call successors, (1174) [2022-10-16 13:09:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 9487 transitions. [2022-10-16 13:09:17,898 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 9487 transitions. Word has length 91 [2022-10-16 13:09:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:17,899 INFO L495 AbstractCegarLoop]: Abstraction has 6830 states and 9487 transitions. [2022-10-16 13:09:17,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 9487 transitions. [2022-10-16 13:09:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-16 13:09:17,901 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:17,902 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:17,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:18,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:18,117 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 485754272, now seen corresponding path program 1 times [2022-10-16 13:09:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:18,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970938696] [2022-10-16 13:09:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:18,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:18,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352698169] [2022-10-16 13:09:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:18,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:18,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 13:09:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:18,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-16 13:09:18,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:18,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:18,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970938696] [2022-10-16 13:09:18,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:18,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352698169] [2022-10-16 13:09:18,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352698169] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:18,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:18,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:18,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60466023] [2022-10-16 13:09:18,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:18,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:18,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:18,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:18,556 INFO L87 Difference]: Start difference. First operand 6830 states and 9487 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:18,849 INFO L93 Difference]: Finished difference Result 6951 states and 9667 transitions. [2022-10-16 13:09:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:18,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2022-10-16 13:09:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:18,900 INFO L225 Difference]: With dead ends: 6951 [2022-10-16 13:09:18,900 INFO L226 Difference]: Without dead ends: 6950 [2022-10-16 13:09:18,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:18,906 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 13 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:18,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2156 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:18,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2022-10-16 13:09:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 6942. [2022-10-16 13:09:19,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6942 states, 5214 states have (on average 1.3883774453394706) internal successors, (7239), 5351 states have internal predecessors, (7239), 1202 states have call successors, (1202), 478 states have call predecessors, (1202), 478 states have return successors, (1202), 1172 states have call predecessors, (1202), 1202 states have call successors, (1202) [2022-10-16 13:09:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 9643 transitions. [2022-10-16 13:09:19,450 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 9643 transitions. Word has length 91 [2022-10-16 13:09:19,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:19,451 INFO L495 AbstractCegarLoop]: Abstraction has 6942 states and 9643 transitions. [2022-10-16 13:09:19,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 9643 transitions. [2022-10-16 13:09:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-16 13:09:19,453 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:19,454 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:19,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:19,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 13:09:19,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2121485491, now seen corresponding path program 1 times [2022-10-16 13:09:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:19,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964700570] [2022-10-16 13:09:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:19,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:19,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597425239] [2022-10-16 13:09:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:19,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:19,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:19,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 13:09:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:20,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:20,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-16 13:09:20,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:20,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:20,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964700570] [2022-10-16 13:09:20,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:20,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597425239] [2022-10-16 13:09:20,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597425239] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:20,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:20,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:20,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933793243] [2022-10-16 13:09:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:20,096 INFO L87 Difference]: Start difference. First operand 6942 states and 9643 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:20,461 INFO L93 Difference]: Finished difference Result 6942 states and 9643 transitions. [2022-10-16 13:09:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 92 [2022-10-16 13:09:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:20,520 INFO L225 Difference]: With dead ends: 6942 [2022-10-16 13:09:20,520 INFO L226 Difference]: Without dead ends: 6941 [2022-10-16 13:09:20,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:20,526 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 12 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:20,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2135 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2022-10-16 13:09:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 6941. [2022-10-16 13:09:21,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6941 states, 5214 states have (on average 1.386843114691216) internal successors, (7231), 5350 states have internal predecessors, (7231), 1202 states have call successors, (1202), 478 states have call predecessors, (1202), 478 states have return successors, (1202), 1172 states have call predecessors, (1202), 1202 states have call successors, (1202) [2022-10-16 13:09:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 9635 transitions. [2022-10-16 13:09:21,049 INFO L78 Accepts]: Start accepts. Automaton has 6941 states and 9635 transitions. Word has length 92 [2022-10-16 13:09:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:21,051 INFO L495 AbstractCegarLoop]: Abstraction has 6941 states and 9635 transitions. [2022-10-16 13:09:21,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6941 states and 9635 transitions. [2022-10-16 13:09:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-16 13:09:21,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:21,057 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:21,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:21,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:21,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:21,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:21,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1489572736, now seen corresponding path program 1 times [2022-10-16 13:09:21,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:21,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429761541] [2022-10-16 13:09:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:21,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:21,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37034731] [2022-10-16 13:09:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:21,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:21,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:21,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 13:09:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:21,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:21,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-10-16 13:09:21,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:21,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:21,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429761541] [2022-10-16 13:09:21,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:21,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37034731] [2022-10-16 13:09:21,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37034731] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:21,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:21,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:21,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404793789] [2022-10-16 13:09:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:21,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:21,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:21,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:21,772 INFO L87 Difference]: Start difference. First operand 6941 states and 9635 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:22,542 INFO L93 Difference]: Finished difference Result 13571 states and 18878 transitions. [2022-10-16 13:09:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:22,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2022-10-16 13:09:22,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:22,604 INFO L225 Difference]: With dead ends: 13571 [2022-10-16 13:09:22,605 INFO L226 Difference]: Without dead ends: 13565 [2022-10-16 13:09:22,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:22,613 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 1016 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:22,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 2315 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:09:22,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13565 states. [2022-10-16 13:09:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13565 to 13507. [2022-10-16 13:09:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13507 states, 10177 states have (on average 1.3852805345386656) internal successors, (14098), 10395 states have internal predecessors, (14098), 2342 states have call successors, (2342), 941 states have call predecessors, (2342), 941 states have return successors, (2342), 2290 states have call predecessors, (2342), 2342 states have call successors, (2342) [2022-10-16 13:09:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 18782 transitions. [2022-10-16 13:09:23,468 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 18782 transitions. Word has length 93 [2022-10-16 13:09:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:23,468 INFO L495 AbstractCegarLoop]: Abstraction has 13507 states and 18782 transitions. [2022-10-16 13:09:23,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 18782 transitions. [2022-10-16 13:09:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-16 13:09:23,471 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:23,471 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:23,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:23,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1067886412, now seen corresponding path program 1 times [2022-10-16 13:09:23,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:23,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808446691] [2022-10-16 13:09:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:23,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:23,725 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:23,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115570583] [2022-10-16 13:09:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:23,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:23,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:23,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 13:09:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:24,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:24,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-10-16 13:09:24,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:24,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:24,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808446691] [2022-10-16 13:09:24,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:24,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115570583] [2022-10-16 13:09:24,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115570583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:24,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:24,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80157883] [2022-10-16 13:09:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:24,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:24,126 INFO L87 Difference]: Start difference. First operand 13507 states and 18782 transitions. Second operand has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:25,323 INFO L93 Difference]: Finished difference Result 26703 states and 37172 transitions. [2022-10-16 13:09:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:25,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-10-16 13:09:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:25,453 INFO L225 Difference]: With dead ends: 26703 [2022-10-16 13:09:25,453 INFO L226 Difference]: Without dead ends: 26697 [2022-10-16 13:09:25,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:25,472 INFO L413 NwaCegarLoop]: 1248 mSDtfsCounter, 1015 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:25,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2259 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:09:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26697 states. [2022-10-16 13:09:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26697 to 26663. [2022-10-16 13:09:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26663 states, 20127 states have (on average 1.3840115268047897) internal successors, (27856), 20509 states have internal predecessors, (27856), 4622 states have call successors, (4622), 1867 states have call predecessors, (4622), 1867 states have return successors, (4622), 4526 states have call predecessors, (4622), 4622 states have call successors, (4622) [2022-10-16 13:09:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26663 states to 26663 states and 37100 transitions. [2022-10-16 13:09:27,545 INFO L78 Accepts]: Start accepts. Automaton has 26663 states and 37100 transitions. Word has length 94 [2022-10-16 13:09:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:27,546 INFO L495 AbstractCegarLoop]: Abstraction has 26663 states and 37100 transitions. [2022-10-16 13:09:27,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 26663 states and 37100 transitions. [2022-10-16 13:09:27,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 13:09:27,549 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:27,549 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:27,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-16 13:09:27,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:27,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1131810612, now seen corresponding path program 1 times [2022-10-16 13:09:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749983715] [2022-10-16 13:09:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:27,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:27,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:27,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371515437] [2022-10-16 13:09:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:27,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:27,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:27,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:27,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 13:09:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:28,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:09:28,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-10-16 13:09:28,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:28,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749983715] [2022-10-16 13:09:28,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371515437] [2022-10-16 13:09:28,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371515437] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:28,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:28,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:09:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866703106] [2022-10-16 13:09:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:28,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:09:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:09:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:09:28,179 INFO L87 Difference]: Start difference. First operand 26663 states and 37100 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:29,825 INFO L93 Difference]: Finished difference Result 53397 states and 74298 transitions. [2022-10-16 13:09:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:09:29,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-10-16 13:09:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:29,943 INFO L225 Difference]: With dead ends: 53397 [2022-10-16 13:09:29,944 INFO L226 Difference]: Without dead ends: 26663 [2022-10-16 13:09:30,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:09:30,043 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 3 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:30,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3232 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26663 states. [2022-10-16 13:09:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26663 to 26663. [2022-10-16 13:09:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26663 states, 20127 states have (on average 1.3824216226958812) internal successors, (27824), 20509 states have internal predecessors, (27824), 4622 states have call successors, (4622), 1867 states have call predecessors, (4622), 1867 states have return successors, (4622), 4526 states have call predecessors, (4622), 4622 states have call successors, (4622) [2022-10-16 13:09:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26663 states to 26663 states and 37068 transitions. [2022-10-16 13:09:31,544 INFO L78 Accepts]: Start accepts. Automaton has 26663 states and 37068 transitions. Word has length 96 [2022-10-16 13:09:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:31,545 INFO L495 AbstractCegarLoop]: Abstraction has 26663 states and 37068 transitions. [2022-10-16 13:09:31,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 26663 states and 37068 transitions. [2022-10-16 13:09:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-16 13:09:31,550 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:31,550 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:31,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:31,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:31,764 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:31,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:31,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1463232278, now seen corresponding path program 1 times [2022-10-16 13:09:31,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:31,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984036076] [2022-10-16 13:09:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:31,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:31,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:31,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840694686] [2022-10-16 13:09:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:31,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:31,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:31,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:31,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 13:09:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:32,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:09:32,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-16 13:09:32,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:09:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-16 13:09:32,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:32,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984036076] [2022-10-16 13:09:32,417 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:32,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840694686] [2022-10-16 13:09:32,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840694686] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:09:32,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 13:09:32,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-10-16 13:09:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075861217] [2022-10-16 13:09:32,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 13:09:32,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:09:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:09:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:09:32,425 INFO L87 Difference]: Start difference. First operand 26663 states and 37068 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:33,877 INFO L93 Difference]: Finished difference Result 27024 states and 37584 transitions. [2022-10-16 13:09:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:09:33,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 97 [2022-10-16 13:09:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:34,133 INFO L225 Difference]: With dead ends: 27024 [2022-10-16 13:09:34,133 INFO L226 Difference]: Without dead ends: 27023 [2022-10-16 13:09:34,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:09:34,144 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 53 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:34,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 4339 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:09:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27023 states. [2022-10-16 13:09:35,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27023 to 27023. [2022-10-16 13:09:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27023 states, 20403 states have (on average 1.379601039062883) internal successors, (28148), 20797 states have internal predecessors, (28148), 4706 states have call successors, (4706), 1867 states have call predecessors, (4706), 1867 states have return successors, (4706), 4598 states have call predecessors, (4706), 4706 states have call successors, (4706) [2022-10-16 13:09:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27023 states to 27023 states and 37560 transitions. [2022-10-16 13:09:35,542 INFO L78 Accepts]: Start accepts. Automaton has 27023 states and 37560 transitions. Word has length 97 [2022-10-16 13:09:35,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:35,543 INFO L495 AbstractCegarLoop]: Abstraction has 27023 states and 37560 transitions. [2022-10-16 13:09:35,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 27023 states and 37560 transitions. [2022-10-16 13:09:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 13:09:35,547 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:35,547 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:35,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:35,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:35,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:35,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1103255612, now seen corresponding path program 1 times [2022-10-16 13:09:35,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:35,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135921360] [2022-10-16 13:09:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:35,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:35,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738445440] [2022-10-16 13:09:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:35,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:35,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:35,841 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:35,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 13:09:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:36,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:36,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-10-16 13:09:36,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:36,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135921360] [2022-10-16 13:09:36,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:36,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738445440] [2022-10-16 13:09:36,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738445440] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:36,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:36,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925775554] [2022-10-16 13:09:36,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:36,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:36,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:36,300 INFO L87 Difference]: Start difference. First operand 27023 states and 37560 transitions. Second operand has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:37,949 INFO L93 Difference]: Finished difference Result 27758 states and 38896 transitions. [2022-10-16 13:09:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:37,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 103 [2022-10-16 13:09:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:38,086 INFO L225 Difference]: With dead ends: 27758 [2022-10-16 13:09:38,086 INFO L226 Difference]: Without dead ends: 27757 [2022-10-16 13:09:38,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:38,098 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 27 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:38,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2138 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27757 states. [2022-10-16 13:09:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27757 to 27135. [2022-10-16 13:09:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27135 states, 20515 states have (on average 1.3802583475505728) internal successors, (28316), 20909 states have internal predecessors, (28316), 4706 states have call successors, (4706), 1867 states have call predecessors, (4706), 1867 states have return successors, (4706), 4598 states have call predecessors, (4706), 4706 states have call successors, (4706) [2022-10-16 13:09:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27135 states to 27135 states and 37728 transitions. [2022-10-16 13:09:39,799 INFO L78 Accepts]: Start accepts. Automaton has 27135 states and 37728 transitions. Word has length 103 [2022-10-16 13:09:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:39,799 INFO L495 AbstractCegarLoop]: Abstraction has 27135 states and 37728 transitions. [2022-10-16 13:09:39,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 27135 states and 37728 transitions. [2022-10-16 13:09:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-16 13:09:39,805 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:39,805 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:39,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-16 13:09:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 13:09:40,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash 158740276, now seen corresponding path program 1 times [2022-10-16 13:09:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:40,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329495753] [2022-10-16 13:09:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:40,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:40,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:40,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020690994] [2022-10-16 13:09:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:40,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:40,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:40,077 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:40,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 13:09:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:40,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:40,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-10-16 13:09:40,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329495753] [2022-10-16 13:09:40,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020690994] [2022-10-16 13:09:40,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020690994] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:40,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:40,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794291658] [2022-10-16 13:09:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:40,423 INFO L87 Difference]: Start difference. First operand 27135 states and 37728 transitions. Second operand has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:41,581 INFO L93 Difference]: Finished difference Result 27866 states and 38952 transitions. [2022-10-16 13:09:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:41,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2022-10-16 13:09:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:41,687 INFO L225 Difference]: With dead ends: 27866 [2022-10-16 13:09:41,687 INFO L226 Difference]: Without dead ends: 27865 [2022-10-16 13:09:41,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:41,700 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 10 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:41,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2133 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27865 states. [2022-10-16 13:09:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27865 to 27415. [2022-10-16 13:09:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27415 states, 20795 states have (on average 1.3805241644626112) internal successors, (28708), 21189 states have internal predecessors, (28708), 4706 states have call successors, (4706), 1867 states have call predecessors, (4706), 1867 states have return successors, (4706), 4598 states have call predecessors, (4706), 4706 states have call successors, (4706) [2022-10-16 13:09:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27415 states to 27415 states and 38120 transitions. [2022-10-16 13:09:43,390 INFO L78 Accepts]: Start accepts. Automaton has 27415 states and 38120 transitions. Word has length 104 [2022-10-16 13:09:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:43,391 INFO L495 AbstractCegarLoop]: Abstraction has 27415 states and 38120 transitions. [2022-10-16 13:09:43,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 27415 states and 38120 transitions. [2022-10-16 13:09:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-16 13:09:43,395 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:43,395 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:43,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:43,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 13:09:43,609 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_set_removeErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:43,610 INFO L85 PathProgramCache]: Analyzing trace with hash 158814657, now seen corresponding path program 1 times [2022-10-16 13:09:43,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:43,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102729338] [2022-10-16 13:09:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:43,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:43,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:43,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856391799] [2022-10-16 13:09:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:43,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:43,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:43,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:43,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 13:09:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:43,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:43,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-10-16 13:09:43,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:43,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:43,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102729338] [2022-10-16 13:09:43,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:43,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856391799] [2022-10-16 13:09:43,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856391799] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:43,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:43,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:09:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150633653] [2022-10-16 13:09:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:43,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:43,999 INFO L87 Difference]: Start difference. First operand 27415 states and 38120 transitions. Second operand has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:45,237 INFO L93 Difference]: Finished difference Result 28038 states and 39232 transitions. [2022-10-16 13:09:45,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:45,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2022-10-16 13:09:45,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:45,361 INFO L225 Difference]: With dead ends: 28038 [2022-10-16 13:09:45,361 INFO L226 Difference]: Without dead ends: 28037 [2022-10-16 13:09:45,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:45,377 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 25 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:45,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2139 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:45,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28037 states. [2022-10-16 13:09:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28037 to 27471. [2022-10-16 13:09:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27471 states, 20851 states have (on average 1.3795021821495372) internal successors, (28764), 21245 states have internal predecessors, (28764), 4706 states have call successors, (4706), 1867 states have call predecessors, (4706), 1867 states have return successors, (4706), 4598 states have call predecessors, (4706), 4706 states have call successors, (4706) [2022-10-16 13:09:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27471 states to 27471 states and 38176 transitions. [2022-10-16 13:09:46,832 INFO L78 Accepts]: Start accepts. Automaton has 27471 states and 38176 transitions. Word has length 104 [2022-10-16 13:09:46,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:46,832 INFO L495 AbstractCegarLoop]: Abstraction has 27471 states and 38176 transitions. [2022-10-16 13:09:46,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:09:46,833 INFO L276 IsEmpty]: Start isEmpty. Operand 27471 states and 38176 transitions. [2022-10-16 13:09:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 13:09:46,837 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:46,837 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:46,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:47,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 13:09:47,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1617736190, now seen corresponding path program 1 times [2022-10-16 13:09:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:47,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959523607] [2022-10-16 13:09:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:47,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:47,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:47,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48937213] [2022-10-16 13:09:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:47,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:47,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:47,107 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:47,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 13:09:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:47,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:47,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-10-16 13:09:47,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:47,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:47,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959523607] [2022-10-16 13:09:47,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:47,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48937213] [2022-10-16 13:09:47,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48937213] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:47,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:47,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:09:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954927358] [2022-10-16 13:09:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:47,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:47,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:47,453 INFO L87 Difference]: Start difference. First operand 27471 states and 38176 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:09:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:48,880 INFO L93 Difference]: Finished difference Result 54949 states and 76386 transitions. [2022-10-16 13:09:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2022-10-16 13:09:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:48,994 INFO L225 Difference]: With dead ends: 54949 [2022-10-16 13:09:48,995 INFO L226 Difference]: Without dead ends: 27503 [2022-10-16 13:09:49,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:49,200 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 0 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:49,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:09:49,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27503 states. [2022-10-16 13:09:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27503 to 27503. [2022-10-16 13:09:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27503 states, 20883 states have (on average 1.3789206531628597) internal successors, (28796), 21277 states have internal predecessors, (28796), 4706 states have call successors, (4706), 1867 states have call predecessors, (4706), 1867 states have return successors, (4706), 4598 states have call predecessors, (4706), 4706 states have call successors, (4706) [2022-10-16 13:09:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27503 states to 27503 states and 38208 transitions. [2022-10-16 13:09:50,538 INFO L78 Accepts]: Start accepts. Automaton has 27503 states and 38208 transitions. Word has length 103 [2022-10-16 13:09:50,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:50,539 INFO L495 AbstractCegarLoop]: Abstraction has 27503 states and 38208 transitions. [2022-10-16 13:09:50,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:09:50,539 INFO L276 IsEmpty]: Start isEmpty. Operand 27503 states and 38208 transitions. [2022-10-16 13:09:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 13:09:50,543 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:50,543 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:50,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-10-16 13:09:50,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 13:09:50,758 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1656162752, now seen corresponding path program 1 times [2022-10-16 13:09:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:50,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808294619] [2022-10-16 13:09:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:50,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:50,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:50,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482067941] [2022-10-16 13:09:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:50,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:50,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:50,813 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:50,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 13:09:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:51,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:09:51,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-16 13:09:51,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:51,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:51,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808294619] [2022-10-16 13:09:51,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482067941] [2022-10-16 13:09:51,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482067941] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:51,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:51,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:09:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899562806] [2022-10-16 13:09:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:51,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:09:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:09:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:51,175 INFO L87 Difference]: Start difference. First operand 27503 states and 38208 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-16 13:09:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:52,579 INFO L93 Difference]: Finished difference Result 58596 states and 81000 transitions. [2022-10-16 13:09:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:09:52,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-10-16 13:09:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:52,683 INFO L225 Difference]: With dead ends: 58596 [2022-10-16 13:09:52,683 INFO L226 Difference]: Without dead ends: 31118 [2022-10-16 13:09:52,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:09:52,754 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 891 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:52,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 2239 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:09:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31118 states. [2022-10-16 13:09:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31118 to 30731. [2022-10-16 13:09:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30731 states, 23339 states have (on average 1.369895882428553) internal successors, (31972), 23741 states have internal predecessors, (31972), 5118 states have call successors, (5118), 2227 states have call predecessors, (5118), 2227 states have return successors, (5118), 5014 states have call predecessors, (5118), 5118 states have call successors, (5118) [2022-10-16 13:09:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30731 states to 30731 states and 42208 transitions. [2022-10-16 13:09:54,189 INFO L78 Accepts]: Start accepts. Automaton has 30731 states and 42208 transitions. Word has length 103 [2022-10-16 13:09:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:09:54,189 INFO L495 AbstractCegarLoop]: Abstraction has 30731 states and 42208 transitions. [2022-10-16 13:09:54,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-10-16 13:09:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 30731 states and 42208 transitions. [2022-10-16 13:09:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-16 13:09:54,193 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:09:54,194 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:09:54,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 13:09:54,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 13:09:54,408 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:09:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:09:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash 625979845, now seen corresponding path program 1 times [2022-10-16 13:09:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:09:54,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524703689] [2022-10-16 13:09:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:54,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:09:54,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:09:54,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198924914] [2022-10-16 13:09:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:09:54,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:09:54,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:09:54,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:09:54,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 13:09:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:09:54,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 13:09:54,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:09:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 13:09:54,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:09:54,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:09:54,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524703689] [2022-10-16 13:09:54,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:09:54,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198924914] [2022-10-16 13:09:54,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198924914] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:09:54,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:09:54,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:09:54,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438218494] [2022-10-16 13:09:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:09:54,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:09:54,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:09:54,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:09:54,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:09:54,942 INFO L87 Difference]: Start difference. First operand 30731 states and 42208 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:09:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:09:57,948 INFO L93 Difference]: Finished difference Result 91495 states and 126972 transitions. [2022-10-16 13:09:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:09:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2022-10-16 13:09:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:09:58,265 INFO L225 Difference]: With dead ends: 91495 [2022-10-16 13:09:58,266 INFO L226 Difference]: Without dead ends: 60789 [2022-10-16 13:09:58,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:09:58,378 INFO L413 NwaCegarLoop]: 1223 mSDtfsCounter, 1011 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:09:58,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 3028 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:09:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60789 states. [2022-10-16 13:10:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60789 to 60471. [2022-10-16 13:10:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60471 states, 45766 states have (on average 1.3598741423764367) internal successors, (62236), 46524 states have internal predecessors, (62236), 10210 states have call successors, (10210), 4448 states have call predecessors, (10210), 4448 states have return successors, (10634), 10002 states have call predecessors, (10634), 10210 states have call successors, (10634) [2022-10-16 13:10:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60471 states to 60471 states and 83080 transitions. [2022-10-16 13:10:01,510 INFO L78 Accepts]: Start accepts. Automaton has 60471 states and 83080 transitions. Word has length 105 [2022-10-16 13:10:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:10:01,511 INFO L495 AbstractCegarLoop]: Abstraction has 60471 states and 83080 transitions. [2022-10-16 13:10:01,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:10:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 60471 states and 83080 transitions. [2022-10-16 13:10:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-16 13:10:01,515 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:10:01,516 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:10:01,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 13:10:01,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 13:10:01,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_set_removeErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:10:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:10:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1806245294, now seen corresponding path program 1 times [2022-10-16 13:10:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:10:01,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031162121] [2022-10-16 13:10:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:10:01,792 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:10:01,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681679745] [2022-10-16 13:10:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:01,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:10:01,794 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:10:01,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 13:10:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:10:02,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:10:02,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:10:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-10-16 13:10:02,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:10:02,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:10:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031162121] [2022-10-16 13:10:02,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:10:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681679745] [2022-10-16 13:10:02,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681679745] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:10:02,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:10:02,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:10:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799450934] [2022-10-16 13:10:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:10:02,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:10:02,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:10:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:10:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:02,165 INFO L87 Difference]: Start difference. First operand 60471 states and 83080 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:10:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:10:05,160 INFO L93 Difference]: Finished difference Result 120277 states and 167322 transitions. [2022-10-16 13:10:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:10:05,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 107 [2022-10-16 13:10:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:10:05,457 INFO L225 Difference]: With dead ends: 120277 [2022-10-16 13:10:05,459 INFO L226 Difference]: Without dead ends: 59831 [2022-10-16 13:10:05,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:05,609 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 9 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:10:05,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2142 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:10:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59831 states. [2022-10-16 13:10:08,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59831 to 59703. [2022-10-16 13:10:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59703 states, 44998 states have (on average 1.354637983910396) internal successors, (60956), 45756 states have internal predecessors, (60956), 10210 states have call successors, (10210), 4448 states have call predecessors, (10210), 4448 states have return successors, (10634), 10002 states have call predecessors, (10634), 10210 states have call successors, (10634) [2022-10-16 13:10:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59703 states to 59703 states and 81800 transitions. [2022-10-16 13:10:08,556 INFO L78 Accepts]: Start accepts. Automaton has 59703 states and 81800 transitions. Word has length 107 [2022-10-16 13:10:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:10:08,557 INFO L495 AbstractCegarLoop]: Abstraction has 59703 states and 81800 transitions. [2022-10-16 13:10:08,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:10:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 59703 states and 81800 transitions. [2022-10-16 13:10:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-16 13:10:08,561 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:10:08,561 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:10:08,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 13:10:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:08,776 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:10:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:10:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1712060528, now seen corresponding path program 1 times [2022-10-16 13:10:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:10:08,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888737678] [2022-10-16 13:10:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:10:08,823 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:10:08,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713157452] [2022-10-16 13:10:08,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:10:08,825 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:10:08,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 13:10:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:10:09,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:10:09,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:10:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-10-16 13:10:09,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:10:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:10:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888737678] [2022-10-16 13:10:09,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:10:09,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713157452] [2022-10-16 13:10:09,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713157452] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:10:09,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:10:09,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:10:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659065958] [2022-10-16 13:10:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:10:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:10:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:10:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:10:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:09,192 INFO L87 Difference]: Start difference. First operand 59703 states and 81800 transitions. Second operand has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 13:10:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:10:11,225 INFO L93 Difference]: Finished difference Result 60810 states and 83480 transitions. [2022-10-16 13:10:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:10:11,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 112 [2022-10-16 13:10:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:10:11,400 INFO L225 Difference]: With dead ends: 60810 [2022-10-16 13:10:11,400 INFO L226 Difference]: Without dead ends: 60809 [2022-10-16 13:10:11,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:11,423 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 12 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:10:11,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2149 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:10:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60809 states. [2022-10-16 13:10:13,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60809 to 60183. [2022-10-16 13:10:13,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60183 states, 45478 states have (on average 1.355116759751968) internal successors, (61628), 46236 states have internal predecessors, (61628), 10210 states have call successors, (10210), 4448 states have call predecessors, (10210), 4448 states have return successors, (10634), 10002 states have call predecessors, (10634), 10210 states have call successors, (10634) [2022-10-16 13:10:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60183 states to 60183 states and 82472 transitions. [2022-10-16 13:10:14,392 INFO L78 Accepts]: Start accepts. Automaton has 60183 states and 82472 transitions. Word has length 112 [2022-10-16 13:10:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:10:14,398 INFO L495 AbstractCegarLoop]: Abstraction has 60183 states and 82472 transitions. [2022-10-16 13:10:14,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 13:10:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 60183 states and 82472 transitions. [2022-10-16 13:10:14,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-16 13:10:14,402 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:10:14,402 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:10:14,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 13:10:14,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:14,618 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_skb_allocErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:10:14,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:10:14,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1712134909, now seen corresponding path program 1 times [2022-10-16 13:10:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:10:14,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262863317] [2022-10-16 13:10:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:10:14,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:10:14,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269097165] [2022-10-16 13:10:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:14,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:14,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:10:14,663 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:10:14,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 13:10:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:10:14,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 13:10:15,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:10:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-10-16 13:10:15,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:10:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:10:15,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262863317] [2022-10-16 13:10:15,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:10:15,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269097165] [2022-10-16 13:10:15,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269097165] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:10:15,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:10:15,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:10:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506401697] [2022-10-16 13:10:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:10:15,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:10:15,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:10:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:10:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:15,120 INFO L87 Difference]: Start difference. First operand 60183 states and 82472 transitions. Second operand has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:10:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:10:18,129 INFO L93 Difference]: Finished difference Result 90999 states and 126442 transitions. [2022-10-16 13:10:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:10:18,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-10-16 13:10:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:10:18,662 INFO L225 Difference]: With dead ends: 90999 [2022-10-16 13:10:18,662 INFO L226 Difference]: Without dead ends: 90997 [2022-10-16 13:10:18,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:18,690 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 1017 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:10:18,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 2289 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:10:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90997 states. [2022-10-16 13:10:22,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90997 to 90851. [2022-10-16 13:10:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90851 states, 68833 states have (on average 1.3587087588801883) internal successors, (93524), 69947 states have internal predecessors, (93524), 15302 states have call successors, (15302), 6669 states have call predecessors, (15302), 6669 states have return successors, (17374), 14990 states have call predecessors, (17374), 15302 states have call successors, (17374) [2022-10-16 13:10:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90851 states to 90851 states and 126200 transitions. [2022-10-16 13:10:23,131 INFO L78 Accepts]: Start accepts. Automaton has 90851 states and 126200 transitions. Word has length 112 [2022-10-16 13:10:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:10:23,131 INFO L495 AbstractCegarLoop]: Abstraction has 90851 states and 126200 transitions. [2022-10-16 13:10:23,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:10:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 90851 states and 126200 transitions. [2022-10-16 13:10:23,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-16 13:10:23,136 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:10:23,136 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:10:23,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-10-16 13:10:23,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:23,352 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:10:23,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:10:23,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1534269282, now seen corresponding path program 1 times [2022-10-16 13:10:23,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:10:23,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259781558] [2022-10-16 13:10:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:23,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:10:23,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:10:23,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674884282] [2022-10-16 13:10:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:23,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:10:23,404 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:10:23,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 13:10:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:10:23,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:10:23,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:10:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-10-16 13:10:23,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:10:23,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:10:23,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259781558] [2022-10-16 13:10:23,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:10:23,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674884282] [2022-10-16 13:10:23,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674884282] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:10:23,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:10:23,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:10:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209114418] [2022-10-16 13:10:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:10:23,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:10:23,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:10:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:10:23,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:23,768 INFO L87 Difference]: Start difference. First operand 90851 states and 126200 transitions. Second operand has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 13:10:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:10:27,011 INFO L93 Difference]: Finished difference Result 91139 states and 126488 transitions. [2022-10-16 13:10:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:10:27,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2022-10-16 13:10:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:10:27,309 INFO L225 Difference]: With dead ends: 91139 [2022-10-16 13:10:27,309 INFO L226 Difference]: Without dead ends: 91138 [2022-10-16 13:10:27,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:27,340 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 11 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:10:27,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2138 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:10:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91138 states. [2022-10-16 13:10:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91138 to 90946. [2022-10-16 13:10:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90946 states, 68881 states have (on average 1.3563682292649641) internal successors, (93428), 70042 states have internal predecessors, (93428), 15302 states have call successors, (15302), 6669 states have call predecessors, (15302), 6717 states have return successors, (17422), 14990 states have call predecessors, (17422), 15302 states have call successors, (17422) [2022-10-16 13:10:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90946 states to 90946 states and 126152 transitions. [2022-10-16 13:10:31,930 INFO L78 Accepts]: Start accepts. Automaton has 90946 states and 126152 transitions. Word has length 113 [2022-10-16 13:10:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:10:31,931 INFO L495 AbstractCegarLoop]: Abstraction has 90946 states and 126152 transitions. [2022-10-16 13:10:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 13:10:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 90946 states and 126152 transitions. [2022-10-16 13:10:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-16 13:10:31,953 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:10:31,954 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:10:31,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 13:10:32,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:32,168 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:10:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:10:32,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1987390773, now seen corresponding path program 1 times [2022-10-16 13:10:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:10:32,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111725279] [2022-10-16 13:10:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:10:32,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:10:32,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99818300] [2022-10-16 13:10:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:32,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:32,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:10:32,211 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:10:32,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 13:10:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:10:32,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:10:32,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:10:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-10-16 13:10:32,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:10:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:10:32,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111725279] [2022-10-16 13:10:32,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:10:32,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99818300] [2022-10-16 13:10:32,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99818300] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:10:32,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:10:32,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:10:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694627325] [2022-10-16 13:10:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:10:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:10:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:10:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:10:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:32,562 INFO L87 Difference]: Start difference. First operand 90946 states and 126152 transitions. Second operand has 3 states, 2 states have (on average 32.5) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:10:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:10:36,779 INFO L93 Difference]: Finished difference Result 127570 states and 185064 transitions. [2022-10-16 13:10:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:10:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 32.5) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-10-16 13:10:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:10:37,519 INFO L225 Difference]: With dead ends: 127570 [2022-10-16 13:10:37,519 INFO L226 Difference]: Without dead ends: 127569 [2022-10-16 13:10:37,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:10:37,562 INFO L413 NwaCegarLoop]: 1479 mSDtfsCounter, 437 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:10:37,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2591 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:10:37,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127569 states. [2022-10-16 13:10:42,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127569 to 91810. [2022-10-16 13:10:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91810 states, 69553 states have (on average 1.3570658346872169) internal successors, (94388), 70714 states have internal predecessors, (94388), 15494 states have call successors, (15494), 6669 states have call predecessors, (15494), 6717 states have return successors, (17614), 15182 states have call predecessors, (17614), 15494 states have call successors, (17614) [2022-10-16 13:10:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91810 states to 91810 states and 127496 transitions. [2022-10-16 13:10:42,915 INFO L78 Accepts]: Start accepts. Automaton has 91810 states and 127496 transitions. Word has length 111 [2022-10-16 13:10:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:10:42,916 INFO L495 AbstractCegarLoop]: Abstraction has 91810 states and 127496 transitions. [2022-10-16 13:10:42,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 32.5) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:10:42,916 INFO L276 IsEmpty]: Start isEmpty. Operand 91810 states and 127496 transitions. [2022-10-16 13:10:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-10-16 13:10:42,922 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:10:42,922 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:10:42,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-10-16 13:10:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:43,136 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:10:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:10:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash -553718822, now seen corresponding path program 1 times [2022-10-16 13:10:43,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:10:43,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817376052] [2022-10-16 13:10:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:43,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:10:43,200 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:10:43,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867440244] [2022-10-16 13:10:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:43,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:10:43,202 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:10:43,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 13:10:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:10:43,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:10:43,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:10:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-10-16 13:10:43,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:10:43,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:10:43,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817376052] [2022-10-16 13:10:43,562 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:10:43,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867440244] [2022-10-16 13:10:43,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867440244] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:10:43,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:10:43,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:10:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308662286] [2022-10-16 13:10:43,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:10:43,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:10:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:10:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:10:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:10:43,564 INFO L87 Difference]: Start difference. First operand 91810 states and 127496 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:10:51,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:10:51,515 INFO L93 Difference]: Finished difference Result 219067 states and 303812 transitions. [2022-10-16 13:10:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:10:51,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 109 [2022-10-16 13:10:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:10:52,181 INFO L225 Difference]: With dead ends: 219067 [2022-10-16 13:10:52,181 INFO L226 Difference]: Without dead ends: 160403 [2022-10-16 13:10:52,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:10:52,346 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 1096 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 4515 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:10:52,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 4515 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:10:52,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160403 states. [2022-10-16 13:10:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160403 to 92002. [2022-10-16 13:10:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92002 states, 69745 states have (on average 1.3560828733242527) internal successors, (94580), 70906 states have internal predecessors, (94580), 15494 states have call successors, (15494), 6669 states have call predecessors, (15494), 6717 states have return successors, (17614), 15182 states have call predecessors, (17614), 15494 states have call successors, (17614) [2022-10-16 13:10:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92002 states to 92002 states and 127688 transitions. [2022-10-16 13:10:59,420 INFO L78 Accepts]: Start accepts. Automaton has 92002 states and 127688 transitions. Word has length 109 [2022-10-16 13:10:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:10:59,421 INFO L495 AbstractCegarLoop]: Abstraction has 92002 states and 127688 transitions. [2022-10-16 13:10:59,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:10:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 92002 states and 127688 transitions. [2022-10-16 13:10:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-16 13:10:59,428 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:10:59,429 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:10:59,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 13:10:59,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:59,644 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [x25_asy_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, x25_asy_change_mtuErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-10-16 13:10:59,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:10:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1479570745, now seen corresponding path program 1 times [2022-10-16 13:10:59,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:10:59,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405013196] [2022-10-16 13:10:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:10:59,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 13:10:59,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889255298] [2022-10-16 13:10:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:10:59,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:10:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:10:59,695 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:10:59,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 13:11:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:11:00,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:11:00,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:11:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-10-16 13:11:00,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:11:00,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:11:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405013196] [2022-10-16 13:11:00,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 13:11:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889255298] [2022-10-16 13:11:00,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889255298] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:11:00,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:11:00,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 13:11:00,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952812135] [2022-10-16 13:11:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:11:00,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:11:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:11:00,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:11:00,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 13:11:00,059 INFO L87 Difference]: Start difference. First operand 92002 states and 127688 transitions. Second operand has 3 states, 2 states have (on average 33.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)