/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:27:07,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:27:07,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:27:07,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:27:07,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:27:07,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:27:07,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:27:07,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:27:07,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:27:07,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:27:07,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:27:07,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:27:07,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:27:07,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:27:07,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:27:07,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:27:07,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:27:07,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:27:07,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:27:07,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:27:07,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:27:07,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:27:07,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:27:07,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:27:07,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:27:07,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:27:07,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:27:07,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:27:07,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:27:07,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:27:07,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:27:07,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:27:07,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:27:07,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:27:07,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:27:07,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:27:07,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:27:07,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:27:07,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:27:07,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:27:07,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:27:07,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:27:07,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:27:07,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:27:07,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:27:07,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:27:07,263 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:27:07,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:27:07,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:27:07,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:27:07,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:27:07,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:27:07,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:27:07,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:27:07,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:27:07,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:27:07,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:27:07,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:27:07,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:27:07,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:27:07,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:27:07,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:27:07,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:27:07,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:27:07,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:27:07,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:27:07,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:27:07,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:27:07,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:27:07,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:27:07,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:27:07,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:27:07,664 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:27:07,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2020-12-22 15:27:07,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59850dd31/62259f8965d748fea3d278a380c46a3b/FLAG7ea9e1d54 [2020-12-22 15:27:09,033 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:27:09,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2020-12-22 15:27:09,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59850dd31/62259f8965d748fea3d278a380c46a3b/FLAG7ea9e1d54 [2020-12-22 15:27:09,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59850dd31/62259f8965d748fea3d278a380c46a3b [2020-12-22 15:27:09,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:27:09,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:27:09,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:27:09,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:27:09,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:27:09,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:27:09" (1/1) ... [2020-12-22 15:27:09,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359926cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:09, skipping insertion in model container [2020-12-22 15:27:09,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:27:09" (1/1) ... [2020-12-22 15:27:09,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:27:09,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:27:14,537 WARN L226 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2020-12-22 15:27:14,549 WARN L226 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2020-12-22 15:27:14,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:27:14,672 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:27:15,325 WARN L226 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2020-12-22 15:27:15,326 WARN L226 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2020-12-22 15:27:15,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:27:16,701 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:27:16,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16 WrapperNode [2020-12-22 15:27:16,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:27:16,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:27:16,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:27:16,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:27:16,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:16,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:18,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:27:18,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:27:18,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:27:18,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:27:18,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:18,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:18,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:18,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:19,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:19,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:20,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... [2020-12-22 15:27:20,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:27:20,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:27:20,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:27:20,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:27:20,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:27:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:27:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:27:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:27:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:27:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:27:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:27:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 15:27:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:27:20,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:27:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:27:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:27:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:27:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:27:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:27:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:27:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:28:15,905 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 15:28:15,907 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 15:28:15,908 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 15:28:15,909 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 15:28:15,911 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 15:28:15,912 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 15:28:15,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:28:15,967 INFO L299 CfgBuilder]: Removed 8216 assume(true) statements. [2020-12-22 15:28:15,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:28:15 BoogieIcfgContainer [2020-12-22 15:28:15,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:28:15,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:28:15,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:28:15,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:28:15,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:27:09" (1/3) ... [2020-12-22 15:28:15,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d72d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:28:15, skipping insertion in model container [2020-12-22 15:28:15,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:27:16" (2/3) ... [2020-12-22 15:28:15,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d72d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:28:15, skipping insertion in model container [2020-12-22 15:28:15,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:28:15" (3/3) ... [2020-12-22 15:28:15,984 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2020-12-22 15:28:15,991 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:28:15,998 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 15:28:16,017 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 15:28:16,069 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:28:16,069 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:28:16,069 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:28:16,069 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:28:16,069 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:28:16,070 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:28:16,070 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:28:16,070 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:28:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7725 states. [2020-12-22 15:28:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 15:28:16,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:16,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:16,195 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:16,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1331870173, now seen corresponding path program 1 times [2020-12-22 15:28:16,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:16,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747479182] [2020-12-22 15:28:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:28:17,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747479182] [2020-12-22 15:28:17,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:17,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111716335] [2020-12-22 15:28:17,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:17,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:17,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:17,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:17,278 INFO L87 Difference]: Start difference. First operand 7725 states. Second operand 3 states. [2020-12-22 15:28:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:20,427 INFO L93 Difference]: Finished difference Result 20247 states and 27074 transitions. [2020-12-22 15:28:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:20,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 15:28:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:20,523 INFO L225 Difference]: With dead ends: 20247 [2020-12-22 15:28:20,524 INFO L226 Difference]: Without dead ends: 12303 [2020-12-22 15:28:20,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12303 states. [2020-12-22 15:28:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12303 to 12069. [2020-12-22 15:28:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12069 states. [2020-12-22 15:28:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12069 states to 12069 states and 15930 transitions. [2020-12-22 15:28:21,041 INFO L78 Accepts]: Start accepts. Automaton has 12069 states and 15930 transitions. Word has length 78 [2020-12-22 15:28:21,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:21,043 INFO L481 AbstractCegarLoop]: Abstraction has 12069 states and 15930 transitions. [2020-12-22 15:28:21,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 12069 states and 15930 transitions. [2020-12-22 15:28:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 15:28:21,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:21,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:21,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:28:21,053 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:21,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1131535695, now seen corresponding path program 1 times [2020-12-22 15:28:21,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:21,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909118255] [2020-12-22 15:28:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:28:21,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909118255] [2020-12-22 15:28:21,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:21,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:21,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706002976] [2020-12-22 15:28:21,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:21,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:21,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:21,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:21,615 INFO L87 Difference]: Start difference. First operand 12069 states and 15930 transitions. Second operand 3 states. [2020-12-22 15:28:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:24,656 INFO L93 Difference]: Finished difference Result 27182 states and 35900 transitions. [2020-12-22 15:28:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:24,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 15:28:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:24,764 INFO L225 Difference]: With dead ends: 27182 [2020-12-22 15:28:24,764 INFO L226 Difference]: Without dead ends: 15229 [2020-12-22 15:28:24,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15229 states. [2020-12-22 15:28:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15229 to 15215. [2020-12-22 15:28:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:28:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20059 transitions. [2020-12-22 15:28:25,306 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20059 transitions. Word has length 96 [2020-12-22 15:28:25,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:25,309 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 20059 transitions. [2020-12-22 15:28:25,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20059 transitions. [2020-12-22 15:28:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 15:28:25,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:25,317 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:25,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:28:25,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:25,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:25,319 INFO L82 PathProgramCache]: Analyzing trace with hash -104060752, now seen corresponding path program 1 times [2020-12-22 15:28:25,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:25,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178367571] [2020-12-22 15:28:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:25,565 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:28:25,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907959804] [2020-12-22 15:28:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:31,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 4034 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:28:31,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:28:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:31,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178367571] [2020-12-22 15:28:31,459 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:28:31,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907959804] [2020-12-22 15:28:31,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:31,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:28:31,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249692669] [2020-12-22 15:28:31,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:31,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:31,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:31,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:31,469 INFO L87 Difference]: Start difference. First operand 15215 states and 20059 transitions. Second operand 3 states. [2020-12-22 15:28:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:31,956 INFO L93 Difference]: Finished difference Result 30314 states and 39988 transitions. [2020-12-22 15:28:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:31,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-22 15:28:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:31,995 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:28:31,995 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:28:32,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:28:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:28:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:28:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20049 transitions. [2020-12-22 15:28:32,556 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20049 transitions. Word has length 128 [2020-12-22 15:28:32,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:32,558 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 20049 transitions. [2020-12-22 15:28:32,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20049 transitions. [2020-12-22 15:28:32,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 15:28:32,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:32,569 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:32,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 15:28:32,771 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1068739855, now seen corresponding path program 1 times [2020-12-22 15:28:32,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:32,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191027529] [2020-12-22 15:28:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:33,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:28:33,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821883288] [2020-12-22 15:28:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:37,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 4035 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:28:38,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:28:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:38,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191027529] [2020-12-22 15:28:38,264 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:28:38,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821883288] [2020-12-22 15:28:38,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:38,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:28:38,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905103361] [2020-12-22 15:28:38,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:38,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:38,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:38,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:38,267 INFO L87 Difference]: Start difference. First operand 15215 states and 20049 transitions. Second operand 3 states. [2020-12-22 15:28:38,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:38,789 INFO L93 Difference]: Finished difference Result 30314 states and 39968 transitions. [2020-12-22 15:28:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:38,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-12-22 15:28:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:38,822 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:28:38,823 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:28:38,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:28:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:28:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:28:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20039 transitions. [2020-12-22 15:28:39,357 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20039 transitions. Word has length 129 [2020-12-22 15:28:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:39,359 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 20039 transitions. [2020-12-22 15:28:39,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20039 transitions. [2020-12-22 15:28:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 15:28:39,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:39,364 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:39,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:39,578 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:39,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1228998037, now seen corresponding path program 1 times [2020-12-22 15:28:39,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:39,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076290394] [2020-12-22 15:28:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:39,889 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:28:39,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607923190] [2020-12-22 15:28:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:44,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 4036 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:28:44,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:28:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:45,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076290394] [2020-12-22 15:28:45,050 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:28:45,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607923190] [2020-12-22 15:28:45,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:45,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:28:45,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260857793] [2020-12-22 15:28:45,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:45,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:45,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:45,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:45,052 INFO L87 Difference]: Start difference. First operand 15215 states and 20039 transitions. Second operand 3 states. [2020-12-22 15:28:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:45,559 INFO L93 Difference]: Finished difference Result 30314 states and 39948 transitions. [2020-12-22 15:28:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:45,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-12-22 15:28:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:45,593 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:28:45,594 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:28:45,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:45,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:28:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:28:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:28:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20029 transitions. [2020-12-22 15:28:46,265 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20029 transitions. Word has length 130 [2020-12-22 15:28:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:46,265 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 20029 transitions. [2020-12-22 15:28:46,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20029 transitions. [2020-12-22 15:28:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 15:28:46,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:46,271 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:46,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:46,486 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:46,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:46,487 INFO L82 PathProgramCache]: Analyzing trace with hash 555720298, now seen corresponding path program 1 times [2020-12-22 15:28:46,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:46,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967430127] [2020-12-22 15:28:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:46,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:28:46,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053637950] [2020-12-22 15:28:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:51,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 4037 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:28:51,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:28:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:52,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967430127] [2020-12-22 15:28:52,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:28:52,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053637950] [2020-12-22 15:28:52,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:52,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:28:52,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918052676] [2020-12-22 15:28:52,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:52,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:52,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:52,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:52,132 INFO L87 Difference]: Start difference. First operand 15215 states and 20029 transitions. Second operand 3 states. [2020-12-22 15:28:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:52,563 INFO L93 Difference]: Finished difference Result 30314 states and 39928 transitions. [2020-12-22 15:28:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:52,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 15:28:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:52,590 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:28:52,590 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:28:52,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:28:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:28:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:28:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20019 transitions. [2020-12-22 15:28:53,258 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20019 transitions. Word has length 131 [2020-12-22 15:28:53,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:53,258 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 20019 transitions. [2020-12-22 15:28:53,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20019 transitions. [2020-12-22 15:28:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 15:28:53,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:53,264 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:53,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:53,465 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:53,466 INFO L82 PathProgramCache]: Analyzing trace with hash 47562790, now seen corresponding path program 1 times [2020-12-22 15:28:53,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:53,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925180280] [2020-12-22 15:28:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:53,636 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:28:53,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410395817] [2020-12-22 15:28:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:28:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:58,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 4038 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:28:58,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:28:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:58,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925180280] [2020-12-22 15:28:58,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:28:58,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410395817] [2020-12-22 15:28:58,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:58,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:28:58,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488310584] [2020-12-22 15:28:58,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:58,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:58,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:58,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:58,924 INFO L87 Difference]: Start difference. First operand 15215 states and 20019 transitions. Second operand 3 states. [2020-12-22 15:28:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:59,327 INFO L93 Difference]: Finished difference Result 30314 states and 39908 transitions. [2020-12-22 15:28:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:59,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 15:28:59,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:59,343 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:28:59,343 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:28:59,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:28:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:28:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:28:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20009 transitions. [2020-12-22 15:28:59,934 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20009 transitions. Word has length 132 [2020-12-22 15:28:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:59,934 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 20009 transitions. [2020-12-22 15:28:59,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20009 transitions. [2020-12-22 15:28:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 15:28:59,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:59,941 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:00,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 15:29:00,142 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:00,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1474698181, now seen corresponding path program 1 times [2020-12-22 15:29:00,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:00,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850806013] [2020-12-22 15:29:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:00,323 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:00,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118088395] [2020-12-22 15:29:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:05,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:05,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:05,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850806013] [2020-12-22 15:29:05,616 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:05,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118088395] [2020-12-22 15:29:05,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:05,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:05,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775290053] [2020-12-22 15:29:05,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:05,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:05,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:05,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:05,618 INFO L87 Difference]: Start difference. First operand 15215 states and 20009 transitions. Second operand 3 states. [2020-12-22 15:29:06,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:06,081 INFO L93 Difference]: Finished difference Result 30314 states and 39888 transitions. [2020-12-22 15:29:06,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:06,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-22 15:29:06,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:06,100 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:06,100 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:06,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19999 transitions. [2020-12-22 15:29:06,691 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19999 transitions. Word has length 133 [2020-12-22 15:29:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:06,691 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19999 transitions. [2020-12-22 15:29:06,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19999 transitions. [2020-12-22 15:29:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 15:29:06,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:06,696 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:06,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:06,910 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:06,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1528595999, now seen corresponding path program 1 times [2020-12-22 15:29:06,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:06,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775991377] [2020-12-22 15:29:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:07,070 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:07,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225507090] [2020-12-22 15:29:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:12,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 4040 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:12,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775991377] [2020-12-22 15:29:12,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225507090] [2020-12-22 15:29:12,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:12,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:12,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038285574] [2020-12-22 15:29:12,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:12,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:12,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:12,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:12,322 INFO L87 Difference]: Start difference. First operand 15215 states and 19999 transitions. Second operand 3 states. [2020-12-22 15:29:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:12,751 INFO L93 Difference]: Finished difference Result 30314 states and 39868 transitions. [2020-12-22 15:29:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:12,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 15:29:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:12,884 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:12,884 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:12,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19989 transitions. [2020-12-22 15:29:13,310 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19989 transitions. Word has length 134 [2020-12-22 15:29:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:13,310 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19989 transitions. [2020-12-22 15:29:13,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19989 transitions. [2020-12-22 15:29:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 15:29:13,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:13,316 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:13,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:13,517 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:13,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:13,518 INFO L82 PathProgramCache]: Analyzing trace with hash -141286112, now seen corresponding path program 1 times [2020-12-22 15:29:13,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:13,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586545556] [2020-12-22 15:29:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:13,674 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:13,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204726272] [2020-12-22 15:29:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:18,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 4041 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:18,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:19,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586545556] [2020-12-22 15:29:19,029 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:19,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204726272] [2020-12-22 15:29:19,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:19,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:19,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172515725] [2020-12-22 15:29:19,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:19,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:19,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:19,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:19,031 INFO L87 Difference]: Start difference. First operand 15215 states and 19989 transitions. Second operand 3 states. [2020-12-22 15:29:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:19,657 INFO L93 Difference]: Finished difference Result 30314 states and 39848 transitions. [2020-12-22 15:29:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:19,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-12-22 15:29:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:19,672 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:19,673 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:19,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19979 transitions. [2020-12-22 15:29:20,110 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19979 transitions. Word has length 135 [2020-12-22 15:29:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:20,111 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19979 transitions. [2020-12-22 15:29:20,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19979 transitions. [2020-12-22 15:29:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 15:29:20,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:20,117 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:20,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 15:29:20,333 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:20,334 INFO L82 PathProgramCache]: Analyzing trace with hash -84203620, now seen corresponding path program 1 times [2020-12-22 15:29:20,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:20,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913106453] [2020-12-22 15:29:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:20,504 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:20,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019245815] [2020-12-22 15:29:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:25,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:25,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:25,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913106453] [2020-12-22 15:29:25,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:25,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019245815] [2020-12-22 15:29:25,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:25,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:25,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761925319] [2020-12-22 15:29:25,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:25,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:25,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:25,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:25,822 INFO L87 Difference]: Start difference. First operand 15215 states and 19979 transitions. Second operand 3 states. [2020-12-22 15:29:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:26,625 INFO L93 Difference]: Finished difference Result 30314 states and 39828 transitions. [2020-12-22 15:29:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:26,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-22 15:29:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:26,642 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:26,643 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:26,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19969 transitions. [2020-12-22 15:29:27,306 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19969 transitions. Word has length 136 [2020-12-22 15:29:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:27,307 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19969 transitions. [2020-12-22 15:29:27,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19969 transitions. [2020-12-22 15:29:27,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 15:29:27,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:27,312 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:27,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:27,513 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1685502587, now seen corresponding path program 1 times [2020-12-22 15:29:27,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:27,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558647486] [2020-12-22 15:29:27,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:27,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:27,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398866663] [2020-12-22 15:29:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:32,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 4043 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:32,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:33,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558647486] [2020-12-22 15:29:33,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:33,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398866663] [2020-12-22 15:29:33,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:33,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:33,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399745464] [2020-12-22 15:29:33,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:33,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:33,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:33,033 INFO L87 Difference]: Start difference. First operand 15215 states and 19969 transitions. Second operand 3 states. [2020-12-22 15:29:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:33,639 INFO L93 Difference]: Finished difference Result 30314 states and 39808 transitions. [2020-12-22 15:29:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:33,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-22 15:29:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:33,656 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:33,656 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:33,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19959 transitions. [2020-12-22 15:29:34,293 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19959 transitions. Word has length 137 [2020-12-22 15:29:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:34,293 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19959 transitions. [2020-12-22 15:29:34,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19959 transitions. [2020-12-22 15:29:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 15:29:34,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:34,298 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:34,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:34,499 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:34,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:34,500 INFO L82 PathProgramCache]: Analyzing trace with hash 711969111, now seen corresponding path program 1 times [2020-12-22 15:29:34,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:34,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199566191] [2020-12-22 15:29:34,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:34,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:34,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765534064] [2020-12-22 15:29:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:39,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 4044 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:39,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:40,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199566191] [2020-12-22 15:29:40,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:40,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765534064] [2020-12-22 15:29:40,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:40,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:40,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724343642] [2020-12-22 15:29:40,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:40,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:40,004 INFO L87 Difference]: Start difference. First operand 15215 states and 19959 transitions. Second operand 3 states. [2020-12-22 15:29:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:40,724 INFO L93 Difference]: Finished difference Result 30314 states and 39788 transitions. [2020-12-22 15:29:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:40,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 15:29:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:40,739 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:40,740 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:40,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19949 transitions. [2020-12-22 15:29:41,265 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19949 transitions. Word has length 138 [2020-12-22 15:29:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:41,265 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19949 transitions. [2020-12-22 15:29:41,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19949 transitions. [2020-12-22 15:29:41,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 15:29:41,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:41,270 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:41,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 15:29:41,480 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash 597351382, now seen corresponding path program 1 times [2020-12-22 15:29:41,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:41,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205357371] [2020-12-22 15:29:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:41,623 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:41,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511798169] [2020-12-22 15:29:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:46,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:46,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:46,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205357371] [2020-12-22 15:29:46,888 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:46,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511798169] [2020-12-22 15:29:46,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:46,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:46,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243695490] [2020-12-22 15:29:46,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:46,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:46,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:46,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:46,890 INFO L87 Difference]: Start difference. First operand 15215 states and 19949 transitions. Second operand 3 states. [2020-12-22 15:29:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:47,572 INFO L93 Difference]: Finished difference Result 30314 states and 39768 transitions. [2020-12-22 15:29:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:47,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-22 15:29:47,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:47,589 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:47,589 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:47,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19939 transitions. [2020-12-22 15:29:48,354 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19939 transitions. Word has length 139 [2020-12-22 15:29:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:48,354 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19939 transitions. [2020-12-22 15:29:48,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19939 transitions. [2020-12-22 15:29:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 15:29:48,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:48,357 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:48,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 15:29:48,565 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:48,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1339318034, now seen corresponding path program 1 times [2020-12-22 15:29:48,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:48,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027391730] [2020-12-22 15:29:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:48,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:48,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852891529] [2020-12-22 15:29:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:53,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 4046 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:53,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:53,834 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-12-22 15:29:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:54,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027391730] [2020-12-22 15:29:54,007 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:29:54,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852891529] [2020-12-22 15:29:54,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:54,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:54,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539607839] [2020-12-22 15:29:54,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:54,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:54,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:54,009 INFO L87 Difference]: Start difference. First operand 15215 states and 19939 transitions. Second operand 3 states. [2020-12-22 15:29:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:54,860 INFO L93 Difference]: Finished difference Result 30314 states and 39748 transitions. [2020-12-22 15:29:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:54,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2020-12-22 15:29:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:54,878 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:29:54,878 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:29:54,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:29:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:29:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:29:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19929 transitions. [2020-12-22 15:29:55,669 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19929 transitions. Word has length 140 [2020-12-22 15:29:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:55,670 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19929 transitions. [2020-12-22 15:29:55,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19929 transitions. [2020-12-22 15:29:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 15:29:55,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:55,673 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:55,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 15:29:55,882 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1429370575, now seen corresponding path program 1 times [2020-12-22 15:29:55,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:55,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537277722] [2020-12-22 15:29:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:56,035 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:29:56,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12830845] [2020-12-22 15:29:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:01,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 4047 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:30:01,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:30:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:30:01,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537277722] [2020-12-22 15:30:01,289 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:30:01,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12830845] [2020-12-22 15:30:01,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:01,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:30:01,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977856616] [2020-12-22 15:30:01,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:30:01,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:01,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:30:01,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:01,291 INFO L87 Difference]: Start difference. First operand 15215 states and 19929 transitions. Second operand 3 states. [2020-12-22 15:30:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:02,075 INFO L93 Difference]: Finished difference Result 30314 states and 39728 transitions. [2020-12-22 15:30:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:02,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-22 15:30:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:02,093 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:30:02,093 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:30:02,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:30:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:30:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:30:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19919 transitions. [2020-12-22 15:30:02,892 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19919 transitions. Word has length 141 [2020-12-22 15:30:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:02,893 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19919 transitions. [2020-12-22 15:30:02,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:30:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19919 transitions. [2020-12-22 15:30:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 15:30:02,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:02,896 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:03,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:03,109 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:03,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1359222579, now seen corresponding path program 1 times [2020-12-22 15:30:03,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:03,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172180749] [2020-12-22 15:30:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:03,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:30:03,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426508399] [2020-12-22 15:30:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:08,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:30:08,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:30:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:30:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172180749] [2020-12-22 15:30:08,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:30:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426508399] [2020-12-22 15:30:08,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:08,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:30:08,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337914622] [2020-12-22 15:30:08,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:30:08,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:08,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:30:08,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:08,468 INFO L87 Difference]: Start difference. First operand 15215 states and 19919 transitions. Second operand 3 states. [2020-12-22 15:30:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:09,256 INFO L93 Difference]: Finished difference Result 30314 states and 39708 transitions. [2020-12-22 15:30:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:09,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 15:30:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:09,273 INFO L225 Difference]: With dead ends: 30314 [2020-12-22 15:30:09,273 INFO L226 Difference]: Without dead ends: 15215 [2020-12-22 15:30:09,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2020-12-22 15:30:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2020-12-22 15:30:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15215 states. [2020-12-22 15:30:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19909 transitions. [2020-12-22 15:30:10,073 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19909 transitions. Word has length 142 [2020-12-22 15:30:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:10,074 INFO L481 AbstractCegarLoop]: Abstraction has 15215 states and 19909 transitions. [2020-12-22 15:30:10,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:30:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19909 transitions. [2020-12-22 15:30:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 15:30:10,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:10,078 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:10,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 15:30:10,279 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash 815514252, now seen corresponding path program 1 times [2020-12-22 15:30:10,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:10,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345718759] [2020-12-22 15:30:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:10,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:30:10,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882100653] [2020-12-22 15:30:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:15,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:30:15,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:30:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:30:15,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345718759] [2020-12-22 15:30:15,770 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:30:15,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882100653] [2020-12-22 15:30:15,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:15,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:30:15,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979858485] [2020-12-22 15:30:15,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:30:15,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:15,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:30:15,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:15,772 INFO L87 Difference]: Start difference. First operand 15215 states and 19909 transitions. Second operand 3 states. [2020-12-22 15:30:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:17,383 INFO L93 Difference]: Finished difference Result 45399 states and 59453 transitions. [2020-12-22 15:30:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:17,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-22 15:30:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:17,419 INFO L225 Difference]: With dead ends: 45399 [2020-12-22 15:30:17,419 INFO L226 Difference]: Without dead ends: 30300 [2020-12-22 15:30:17,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30300 states. [2020-12-22 15:30:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30300 to 29782. [2020-12-22 15:30:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29782 states. [2020-12-22 15:30:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29782 states to 29782 states and 39023 transitions. [2020-12-22 15:30:19,110 INFO L78 Accepts]: Start accepts. Automaton has 29782 states and 39023 transitions. Word has length 143 [2020-12-22 15:30:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:19,111 INFO L481 AbstractCegarLoop]: Abstraction has 29782 states and 39023 transitions. [2020-12-22 15:30:19,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:30:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 29782 states and 39023 transitions. [2020-12-22 15:30:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 15:30:19,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:19,114 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:19,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 15:30:19,316 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:19,317 INFO L82 PathProgramCache]: Analyzing trace with hash 815573834, now seen corresponding path program 1 times [2020-12-22 15:30:19,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:19,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170022685] [2020-12-22 15:30:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:19,599 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:30:19,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350007010] [2020-12-22 15:30:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:24,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:30:24,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:30:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:30:24,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170022685] [2020-12-22 15:30:24,699 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:30:24,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350007010] [2020-12-22 15:30:24,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:24,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:30:24,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941556254] [2020-12-22 15:30:24,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:30:24,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:24,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:30:24,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:24,701 INFO L87 Difference]: Start difference. First operand 29782 states and 39023 transitions. Second operand 3 states. [2020-12-22 15:30:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:29,369 INFO L93 Difference]: Finished difference Result 65501 states and 85835 transitions. [2020-12-22 15:30:29,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:29,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-22 15:30:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:29,410 INFO L225 Difference]: With dead ends: 65501 [2020-12-22 15:30:29,410 INFO L226 Difference]: Without dead ends: 35835 [2020-12-22 15:30:29,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35835 states. [2020-12-22 15:30:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35835 to 35813. [2020-12-22 15:30:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35813 states. [2020-12-22 15:30:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35813 states to 35813 states and 46867 transitions. [2020-12-22 15:30:31,515 INFO L78 Accepts]: Start accepts. Automaton has 35813 states and 46867 transitions. Word has length 143 [2020-12-22 15:30:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:31,515 INFO L481 AbstractCegarLoop]: Abstraction has 35813 states and 46867 transitions. [2020-12-22 15:30:31,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:30:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 35813 states and 46867 transitions. [2020-12-22 15:30:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 15:30:31,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:31,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:31,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:31,721 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash -153920165, now seen corresponding path program 1 times [2020-12-22 15:30:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:31,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666677603] [2020-12-22 15:30:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:31,865 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:30:31,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037671759] [2020-12-22 15:30:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:36,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 4010 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:30:36,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:30:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:30:37,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666677603] [2020-12-22 15:30:37,214 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:30:37,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037671759] [2020-12-22 15:30:37,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:37,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:30:37,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972254964] [2020-12-22 15:30:37,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:30:37,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:37,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:30:37,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:37,215 INFO L87 Difference]: Start difference. First operand 35813 states and 46867 transitions. Second operand 3 states. [2020-12-22 15:30:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:39,741 INFO L93 Difference]: Finished difference Result 77563 states and 101523 transitions. [2020-12-22 15:30:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:39,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-12-22 15:30:39,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:39,789 INFO L225 Difference]: With dead ends: 77563 [2020-12-22 15:30:39,789 INFO L226 Difference]: Without dead ends: 41866 [2020-12-22 15:30:39,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:30:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41866 states. [2020-12-22 15:30:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41866 to 41844. [2020-12-22 15:30:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41844 states. [2020-12-22 15:30:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41844 states to 41844 states and 54743 transitions. [2020-12-22 15:30:43,168 INFO L78 Accepts]: Start accepts. Automaton has 41844 states and 54743 transitions. Word has length 147 [2020-12-22 15:30:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:43,168 INFO L481 AbstractCegarLoop]: Abstraction has 41844 states and 54743 transitions. [2020-12-22 15:30:43,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:30:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 41844 states and 54743 transitions. [2020-12-22 15:30:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-22 15:30:43,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:43,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:43,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:43,388 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:43,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1169414982, now seen corresponding path program 1 times [2020-12-22 15:30:43,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:43,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568483255] [2020-12-22 15:30:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:43,660 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:30:43,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035981374] [2020-12-22 15:30:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true