/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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:26:54,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:26:54,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:26:54,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:26:54,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:26:54,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:26:54,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:26:54,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:26:54,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:26:54,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:26:54,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:26:54,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:26:54,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:26:54,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:26:54,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:26:54,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:26:54,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:26:54,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:26:54,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:26:54,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:26:54,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:26:54,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:26:54,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:26:54,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:26:54,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:26:54,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:26:54,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:26:54,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:26:54,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:26:54,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:26:54,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:26:54,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:26:54,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:26:54,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:26:54,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:26:54,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:26:54,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:26:54,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:26:54,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:26:54,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:26:54,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:26:54,982 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:26:54,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:26:54,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:26:54,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:26:54,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:26:54,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:26:54,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:26:54,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:26:54,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:26:54,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:26:54,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:26:54,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:26:54,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:26:54,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:26:54,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:26:54,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:26:54,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:26:54,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:26:54,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:26:54,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:26:54,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:26:54,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:26:55,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:26:55,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:26:55,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:26:55,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:26:55,411 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:26:55,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2020-12-22 13:26:55,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90874d85/240295397f7b4a8687634ccf61132ba4/FLAGa40dcdbb3 [2020-12-22 13:26:56,652 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:26:56,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2020-12-22 13:26:56,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90874d85/240295397f7b4a8687634ccf61132ba4/FLAGa40dcdbb3 [2020-12-22 13:26:57,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90874d85/240295397f7b4a8687634ccf61132ba4 [2020-12-22 13:26:57,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:26:57,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:26:57,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:26:57,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:26:57,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:26:57,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:26:57" (1/1) ... [2020-12-22 13:26:57,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f5a754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:26:57, skipping insertion in model container [2020-12-22 13:26:57,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:26:57" (1/1) ... [2020-12-22 13:26:57,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:26:57,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:26:58,008 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2020-12-22 13:26:58,009 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2020-12-22 13:26:58,586 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2020-12-22 13:27:00,103 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:27:00,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:27:00,217 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:27:00,402 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2020-12-22 13:27:00,403 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2020-12-22 13:27:00,421 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2020-12-22 13:27:00,880 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:27:00,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:27:01,280 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:27:01,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01 WrapperNode [2020-12-22 13:27:01,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:27:01,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:27:01,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:27:01,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:27:01,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:01,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:02,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:27:02,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:27:02,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:27:02,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:27:02,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:02,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:02,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:02,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:02,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:02,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:02,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (1/1) ... [2020-12-22 13:27:03,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:27:03,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:27:03,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:27:03,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:27:03,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (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 13:27:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:27:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:27:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:27:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:27:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:27:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure he_ioctl [2020-12-22 13:27:03,168 INFO L138 BoogieDeclarations]: Found implementation of procedure he_ioctl [2020-12-22 13:27:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:27:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:27:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:27:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2020-12-22 13:27:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2020-12-22 13:27:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:27:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:27:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:27:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:27:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:27:18,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:27:18,354 INFO L299 CfgBuilder]: Removed 3920 assume(true) statements. [2020-12-22 13:27:18,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:27:18 BoogieIcfgContainer [2020-12-22 13:27:18,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:27:18,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:27:18,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:27:18,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:27:18,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:26:57" (1/3) ... [2020-12-22 13:27:18,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604dc359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:27:18, skipping insertion in model container [2020-12-22 13:27:18,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:27:01" (2/3) ... [2020-12-22 13:27:18,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604dc359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:27:18, skipping insertion in model container [2020-12-22 13:27:18,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:27:18" (3/3) ... [2020-12-22 13:27:18,369 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2020-12-22 13:27:18,376 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:27:18,383 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-22 13:27:18,403 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-22 13:27:18,462 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:27:18,462 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:27:18,462 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:27:18,463 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:27:18,463 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:27:18,463 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:27:18,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:27:18,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:27:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states. [2020-12-22 13:27:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 13:27:18,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:18,543 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] [2020-12-22 13:27:18,543 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:18,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:18,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1581002451, now seen corresponding path program 1 times [2020-12-22 13:27:18,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:18,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007908250] [2020-12-22 13:27:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:19,260 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 13:27:19,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007908250] [2020-12-22 13:27:19,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:19,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:27:19,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363339722] [2020-12-22 13:27:19,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:27:19,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:27:19,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:19,287 INFO L87 Difference]: Start difference. First operand 3322 states. Second operand 3 states. [2020-12-22 13:27:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:19,759 INFO L93 Difference]: Finished difference Result 9019 states and 11589 transitions. [2020-12-22 13:27:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:27:19,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 13:27:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:19,820 INFO L225 Difference]: With dead ends: 9019 [2020-12-22 13:27:19,821 INFO L226 Difference]: Without dead ends: 5642 [2020-12-22 13:27:19,839 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 13:27:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2020-12-22 13:27:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5199. [2020-12-22 13:27:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2020-12-22 13:27:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6589 transitions. [2020-12-22 13:27:20,142 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6589 transitions. Word has length 30 [2020-12-22 13:27:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:20,143 INFO L481 AbstractCegarLoop]: Abstraction has 5199 states and 6589 transitions. [2020-12-22 13:27:20,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:27:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6589 transitions. [2020-12-22 13:27:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 13:27:20,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:20,152 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] [2020-12-22 13:27:20,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:27:20,153 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:20,156 INFO L82 PathProgramCache]: Analyzing trace with hash 887517176, now seen corresponding path program 1 times [2020-12-22 13:27:20,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:20,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141530757] [2020-12-22 13:27:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:20,398 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 13:27:20,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141530757] [2020-12-22 13:27:20,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:20,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:27:20,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155851316] [2020-12-22 13:27:20,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:27:20,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:20,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:27:20,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:20,402 INFO L87 Difference]: Start difference. First operand 5199 states and 6589 transitions. Second operand 3 states. [2020-12-22 13:27:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:20,887 INFO L93 Difference]: Finished difference Result 11503 states and 14673 transitions. [2020-12-22 13:27:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:27:20,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-22 13:27:20,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:20,930 INFO L225 Difference]: With dead ends: 11503 [2020-12-22 13:27:20,930 INFO L226 Difference]: Without dead ends: 6332 [2020-12-22 13:27:20,948 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 13:27:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2020-12-22 13:27:21,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 6324. [2020-12-22 13:27:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6324 states. [2020-12-22 13:27:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8111 transitions. [2020-12-22 13:27:21,234 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8111 transitions. Word has length 32 [2020-12-22 13:27:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:21,235 INFO L481 AbstractCegarLoop]: Abstraction has 6324 states and 8111 transitions. [2020-12-22 13:27:21,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:27:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8111 transitions. [2020-12-22 13:27:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 13:27:21,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:21,238 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] [2020-12-22 13:27:21,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:27:21,240 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1301149159, now seen corresponding path program 1 times [2020-12-22 13:27:21,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:21,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758446819] [2020-12-22 13:27:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:21,507 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 13:27:21,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758446819] [2020-12-22 13:27:21,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:21,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:27:21,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139555893] [2020-12-22 13:27:21,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:27:21,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:21,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:27:21,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:21,526 INFO L87 Difference]: Start difference. First operand 6324 states and 8111 transitions. Second operand 3 states. [2020-12-22 13:27:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:23,958 INFO L93 Difference]: Finished difference Result 13765 states and 17737 transitions. [2020-12-22 13:27:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:27:23,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-12-22 13:27:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:24,002 INFO L225 Difference]: With dead ends: 13765 [2020-12-22 13:27:24,002 INFO L226 Difference]: Without dead ends: 7469 [2020-12-22 13:27:24,016 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 13:27:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2020-12-22 13:27:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7461. [2020-12-22 13:27:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7461 states. [2020-12-22 13:27:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 9649 transitions. [2020-12-22 13:27:24,365 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 9649 transitions. Word has length 45 [2020-12-22 13:27:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:24,367 INFO L481 AbstractCegarLoop]: Abstraction has 7461 states and 9649 transitions. [2020-12-22 13:27:24,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:27:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 9649 transitions. [2020-12-22 13:27:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 13:27:24,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:24,372 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] [2020-12-22 13:27:24,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:27:24,373 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash -806942872, now seen corresponding path program 1 times [2020-12-22 13:27:24,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:24,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736103870] [2020-12-22 13:27:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:24,881 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 13:27:24,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736103870] [2020-12-22 13:27:24,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:24,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:27:24,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302567461] [2020-12-22 13:27:24,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:27:24,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:27:24,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:24,884 INFO L87 Difference]: Start difference. First operand 7461 states and 9649 transitions. Second operand 3 states. [2020-12-22 13:27:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:25,252 INFO L93 Difference]: Finished difference Result 7461 states and 9649 transitions. [2020-12-22 13:27:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:27:25,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-22 13:27:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:25,292 INFO L225 Difference]: With dead ends: 7461 [2020-12-22 13:27:25,292 INFO L226 Difference]: Without dead ends: 7443 [2020-12-22 13:27:25,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2020-12-22 13:27:25,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 7443. [2020-12-22 13:27:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7443 states. [2020-12-22 13:27:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 9622 transitions. [2020-12-22 13:27:25,634 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 9622 transitions. Word has length 49 [2020-12-22 13:27:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:25,636 INFO L481 AbstractCegarLoop]: Abstraction has 7443 states and 9622 transitions. [2020-12-22 13:27:25,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:27:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 9622 transitions. [2020-12-22 13:27:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 13:27:25,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:25,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:27:25,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:27:25,643 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:25,644 INFO L82 PathProgramCache]: Analyzing trace with hash -90544357, now seen corresponding path program 1 times [2020-12-22 13:27:25,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:25,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754364030] [2020-12-22 13:27:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 13:27:25,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754364030] [2020-12-22 13:27:25,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:25,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:27:25,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936445852] [2020-12-22 13:27:25,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:27:25,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:25,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:27:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:25,840 INFO L87 Difference]: Start difference. First operand 7443 states and 9622 transitions. Second operand 3 states. [2020-12-22 13:27:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:26,117 INFO L93 Difference]: Finished difference Result 14864 states and 19223 transitions. [2020-12-22 13:27:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:27:26,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 13:27:26,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:26,157 INFO L225 Difference]: With dead ends: 14864 [2020-12-22 13:27:26,157 INFO L226 Difference]: Without dead ends: 7449 [2020-12-22 13:27:26,172 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 13:27:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2020-12-22 13:27:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 7449. [2020-12-22 13:27:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7449 states. [2020-12-22 13:27:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7449 states to 7449 states and 9628 transitions. [2020-12-22 13:27:26,414 INFO L78 Accepts]: Start accepts. Automaton has 7449 states and 9628 transitions. Word has length 74 [2020-12-22 13:27:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:26,418 INFO L481 AbstractCegarLoop]: Abstraction has 7449 states and 9628 transitions. [2020-12-22 13:27:26,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:27:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7449 states and 9628 transitions. [2020-12-22 13:27:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 13:27:26,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:26,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:27:26,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:27:26,426 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash 382366977, now seen corresponding path program 1 times [2020-12-22 13:27:26,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:26,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902417474] [2020-12-22 13:27:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:27:26,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902417474] [2020-12-22 13:27:26,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:26,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:27:26,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458732315] [2020-12-22 13:27:26,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:27:26,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:26,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:27:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:27:26,733 INFO L87 Difference]: Start difference. First operand 7449 states and 9628 transitions. Second operand 5 states. [2020-12-22 13:27:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:29,494 INFO L93 Difference]: Finished difference Result 19618 states and 25238 transitions. [2020-12-22 13:27:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:27:29,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-12-22 13:27:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:29,525 INFO L225 Difference]: With dead ends: 19618 [2020-12-22 13:27:29,525 INFO L226 Difference]: Without dead ends: 12197 [2020-12-22 13:27:29,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:27:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12197 states. [2020-12-22 13:27:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12197 to 7462. [2020-12-22 13:27:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7462 states. [2020-12-22 13:27:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 9643 transitions. [2020-12-22 13:27:29,855 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 9643 transitions. Word has length 76 [2020-12-22 13:27:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:29,856 INFO L481 AbstractCegarLoop]: Abstraction has 7462 states and 9643 transitions. [2020-12-22 13:27:29,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:27:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 9643 transitions. [2020-12-22 13:27:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 13:27:29,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:29,861 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:27:29,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:27:29,861 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:29,862 INFO L82 PathProgramCache]: Analyzing trace with hash 805068803, now seen corresponding path program 1 times [2020-12-22 13:27:29,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:29,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105870236] [2020-12-22 13:27:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:27:30,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105870236] [2020-12-22 13:27:30,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:30,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:27:30,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358765556] [2020-12-22 13:27:30,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:27:30,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:30,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:27:30,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:27:30,117 INFO L87 Difference]: Start difference. First operand 7462 states and 9643 transitions. Second operand 5 states. [2020-12-22 13:27:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:32,376 INFO L93 Difference]: Finished difference Result 36139 states and 46688 transitions. [2020-12-22 13:27:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:27:32,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-12-22 13:27:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:32,448 INFO L225 Difference]: With dead ends: 36139 [2020-12-22 13:27:32,448 INFO L226 Difference]: Without dead ends: 28705 [2020-12-22 13:27:32,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:27:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28705 states. [2020-12-22 13:27:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28705 to 7468. [2020-12-22 13:27:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7468 states. [2020-12-22 13:27:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 9649 transitions. [2020-12-22 13:27:33,247 INFO L78 Accepts]: Start accepts. Automaton has 7468 states and 9649 transitions. Word has length 76 [2020-12-22 13:27:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:33,249 INFO L481 AbstractCegarLoop]: Abstraction has 7468 states and 9649 transitions. [2020-12-22 13:27:33,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:27:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7468 states and 9649 transitions. [2020-12-22 13:27:33,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 13:27:33,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:33,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:27:33,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:27:33,255 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:33,255 INFO L82 PathProgramCache]: Analyzing trace with hash -653223961, now seen corresponding path program 1 times [2020-12-22 13:27:33,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:33,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993273336] [2020-12-22 13:27:33,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:27:33,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993273336] [2020-12-22 13:27:33,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:33,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 13:27:33,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474005268] [2020-12-22 13:27:33,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:27:33,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:33,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:27:33,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:27:33,889 INFO L87 Difference]: Start difference. First operand 7468 states and 9649 transitions. Second operand 9 states. [2020-12-22 13:27:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:39,170 INFO L93 Difference]: Finished difference Result 42200 states and 55097 transitions. [2020-12-22 13:27:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 13:27:39,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-12-22 13:27:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:39,283 INFO L225 Difference]: With dead ends: 42200 [2020-12-22 13:27:39,283 INFO L226 Difference]: Without dead ends: 34760 [2020-12-22 13:27:39,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2020-12-22 13:27:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34760 states. [2020-12-22 13:27:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34760 to 9231. [2020-12-22 13:27:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9231 states. [2020-12-22 13:27:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9231 states to 9231 states and 11835 transitions. [2020-12-22 13:27:40,595 INFO L78 Accepts]: Start accepts. Automaton has 9231 states and 11835 transitions. Word has length 78 [2020-12-22 13:27:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:40,595 INFO L481 AbstractCegarLoop]: Abstraction has 9231 states and 11835 transitions. [2020-12-22 13:27:40,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:27:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 9231 states and 11835 transitions. [2020-12-22 13:27:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 13:27:40,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:40,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 13:27:40,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:27:40,609 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash -741958678, now seen corresponding path program 1 times [2020-12-22 13:27:40,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:40,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068788685] [2020-12-22 13:27:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:27:40,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068788685] [2020-12-22 13:27:40,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:40,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:27:40,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563951773] [2020-12-22 13:27:40,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:27:40,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:40,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:27:40,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:27:40,883 INFO L87 Difference]: Start difference. First operand 9231 states and 11835 transitions. Second operand 4 states. [2020-12-22 13:27:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:43,089 INFO L93 Difference]: Finished difference Result 24550 states and 31727 transitions. [2020-12-22 13:27:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:27:43,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-22 13:27:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:43,130 INFO L225 Difference]: With dead ends: 24550 [2020-12-22 13:27:43,130 INFO L226 Difference]: Without dead ends: 15347 [2020-12-22 13:27:43,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:27:43,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15347 states. [2020-12-22 13:27:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15347 to 9237. [2020-12-22 13:27:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9237 states. [2020-12-22 13:27:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9237 states to 9237 states and 11841 transitions. [2020-12-22 13:27:44,144 INFO L78 Accepts]: Start accepts. Automaton has 9237 states and 11841 transitions. Word has length 89 [2020-12-22 13:27:44,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:44,144 INFO L481 AbstractCegarLoop]: Abstraction has 9237 states and 11841 transitions. [2020-12-22 13:27:44,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:27:44,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9237 states and 11841 transitions. [2020-12-22 13:27:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 13:27:44,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:44,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2020-12-22 13:27:44,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:27:44,153 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2074368120, now seen corresponding path program 1 times [2020-12-22 13:27:44,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:44,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646198937] [2020-12-22 13:27:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:27:44,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646198937] [2020-12-22 13:27:44,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:44,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:27:44,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443869426] [2020-12-22 13:27:44,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:27:44,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:44,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:27:44,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:44,393 INFO L87 Difference]: Start difference. First operand 9237 states and 11841 transitions. Second operand 3 states. [2020-12-22 13:27:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:45,789 INFO L93 Difference]: Finished difference Result 18656 states and 23898 transitions. [2020-12-22 13:27:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:27:45,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2020-12-22 13:27:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:45,820 INFO L225 Difference]: With dead ends: 18656 [2020-12-22 13:27:45,821 INFO L226 Difference]: Without dead ends: 9447 [2020-12-22 13:27:45,839 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 13:27:45,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9447 states. [2020-12-22 13:27:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9447 to 9252. [2020-12-22 13:27:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9252 states. [2020-12-22 13:27:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 11856 transitions. [2020-12-22 13:27:46,769 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 11856 transitions. Word has length 166 [2020-12-22 13:27:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:46,769 INFO L481 AbstractCegarLoop]: Abstraction has 9252 states and 11856 transitions. [2020-12-22 13:27:46,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:27:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 11856 transitions. [2020-12-22 13:27:46,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 13:27:46,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:46,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 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 13:27:46,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:27:46,779 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash 359465740, now seen corresponding path program 1 times [2020-12-22 13:27:46,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:46,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638820185] [2020-12-22 13:27:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:27:47,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638820185] [2020-12-22 13:27:47,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:27:47,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:27:47,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578465099] [2020-12-22 13:27:47,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:27:47,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:47,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:27:47,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:27:47,035 INFO L87 Difference]: Start difference. First operand 9252 states and 11856 transitions. Second operand 3 states. [2020-12-22 13:27:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:48,448 INFO L93 Difference]: Finished difference Result 18593 states and 23814 transitions. [2020-12-22 13:27:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:27:48,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-12-22 13:27:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:48,468 INFO L225 Difference]: With dead ends: 18593 [2020-12-22 13:27:48,468 INFO L226 Difference]: Without dead ends: 9369 [2020-12-22 13:27:48,482 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 13:27:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2020-12-22 13:27:49,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 9270. [2020-12-22 13:27:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9270 states. [2020-12-22 13:27:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9270 states to 9270 states and 11874 transitions. [2020-12-22 13:27:49,598 INFO L78 Accepts]: Start accepts. Automaton has 9270 states and 11874 transitions. Word has length 188 [2020-12-22 13:27:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:49,599 INFO L481 AbstractCegarLoop]: Abstraction has 9270 states and 11874 transitions. [2020-12-22 13:27:49,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:27:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 9270 states and 11874 transitions. [2020-12-22 13:27:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-12-22 13:27:49,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:49,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:49,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:27:49,618 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:49,619 INFO L82 PathProgramCache]: Analyzing trace with hash 476710264, now seen corresponding path program 1 times [2020-12-22 13:27:49,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:49,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329061706] [2020-12-22 13:27:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:27:49,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329061706] [2020-12-22 13:27:49,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203642329] [2020-12-22 13:27:49,963 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 13:27:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:51,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 3261 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:27:51,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:27:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:27:51,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:27:51,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:27:51,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921489837] [2020-12-22 13:27:51,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:27:51,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:51,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:27:51,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:27:51,914 INFO L87 Difference]: Start difference. First operand 9270 states and 11874 transitions. Second operand 5 states. [2020-12-22 13:27:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:53,091 INFO L93 Difference]: Finished difference Result 18728 states and 23949 transitions. [2020-12-22 13:27:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:27:53,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-12-22 13:27:53,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:53,119 INFO L225 Difference]: With dead ends: 18728 [2020-12-22 13:27:53,120 INFO L226 Difference]: Without dead ends: 9486 [2020-12-22 13:27:53,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:27:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9486 states. [2020-12-22 13:27:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9486 to 9387. [2020-12-22 13:27:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9387 states. [2020-12-22 13:27:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 11991 transitions. [2020-12-22 13:27:54,257 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 11991 transitions. Word has length 227 [2020-12-22 13:27:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:54,257 INFO L481 AbstractCegarLoop]: Abstraction has 9387 states and 11991 transitions. [2020-12-22 13:27:54,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:27:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 11991 transitions. [2020-12-22 13:27:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-12-22 13:27:54,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:54,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:54,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 13:27:54,482 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash -723973092, now seen corresponding path program 2 times [2020-12-22 13:27:54,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:54,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137710462] [2020-12-22 13:27:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-22 13:27:54,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137710462] [2020-12-22 13:27:54,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657702074] [2020-12-22 13:27:54,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 13:28:00,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:28:00,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:28:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:28:00,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-22 13:28:00,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:28:00,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 13:28:00,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823330593] [2020-12-22 13:28:00,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:28:00,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:28:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:00,774 INFO L87 Difference]: Start difference. First operand 9387 states and 11991 transitions. Second operand 7 states. [2020-12-22 13:28:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:02,859 INFO L93 Difference]: Finished difference Result 19835 states and 25143 transitions. [2020-12-22 13:28:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 13:28:02,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-12-22 13:28:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:02,889 INFO L225 Difference]: With dead ends: 19835 [2020-12-22 13:28:02,889 INFO L226 Difference]: Without dead ends: 10476 [2020-12-22 13:28:02,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:28:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10476 states. [2020-12-22 13:28:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10476 to 9882. [2020-12-22 13:28:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9882 states. [2020-12-22 13:28:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9882 states to 9882 states and 12510 transitions. [2020-12-22 13:28:03,941 INFO L78 Accepts]: Start accepts. Automaton has 9882 states and 12510 transitions. Word has length 266 [2020-12-22 13:28:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:03,942 INFO L481 AbstractCegarLoop]: Abstraction has 9882 states and 12510 transitions. [2020-12-22 13:28:03,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:28:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 9882 states and 12510 transitions. [2020-12-22 13:28:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-12-22 13:28:03,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:03,956 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:04,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 13:28:04,170 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1451122872, now seen corresponding path program 3 times [2020-12-22 13:28:04,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:04,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312718666] [2020-12-22 13:28:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 7 proven. 142 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-12-22 13:28:05,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312718666] [2020-12-22 13:28:05,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283739833] [2020-12-22 13:28:05,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 13:28:10,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:28:10,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:28:10,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 13:28:10,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:11,097 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 13:28:11,313 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2020-12-22 13:28:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-12-22 13:28:11,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:11,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-12-22 13:28:11,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901389518] [2020-12-22 13:28:11,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:28:11,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:11,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:28:11,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:28:11,708 INFO L87 Difference]: Start difference. First operand 9882 states and 12510 transitions. Second operand 4 states. [2020-12-22 13:28:11,961 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-22 13:28:14,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:14,636 INFO L93 Difference]: Finished difference Result 25852 states and 33077 transitions. [2020-12-22 13:28:14,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:28:14,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 405 [2020-12-22 13:28:14,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:14,675 INFO L225 Difference]: With dead ends: 25852 [2020-12-22 13:28:14,675 INFO L226 Difference]: Without dead ends: 15998 [2020-12-22 13:28:14,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:28:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15998 states. [2020-12-22 13:28:16,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15998 to 9882. [2020-12-22 13:28:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9882 states. [2020-12-22 13:28:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9882 states to 9882 states and 12510 transitions. [2020-12-22 13:28:16,063 INFO L78 Accepts]: Start accepts. Automaton has 9882 states and 12510 transitions. Word has length 405 [2020-12-22 13:28:16,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:16,064 INFO L481 AbstractCegarLoop]: Abstraction has 9882 states and 12510 transitions. [2020-12-22 13:28:16,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:28:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 9882 states and 12510 transitions. [2020-12-22 13:28:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-12-22 13:28:16,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:16,082 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:16,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 13:28:16,296 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:16,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1656846192, now seen corresponding path program 1 times [2020-12-22 13:28:16,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:16,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320186617] [2020-12-22 13:28:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:16,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:28:16,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734482907] [2020-12-22 13:28:16,593 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 13:28:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:19,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 9066 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:28:19,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2020-12-22 13:28:20,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320186617] [2020-12-22 13:28:20,386 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:28:20,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734482907] [2020-12-22 13:28:20,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:20,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:20,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704745579] [2020-12-22 13:28:20,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:20,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:20,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:20,389 INFO L87 Difference]: Start difference. First operand 9882 states and 12510 transitions. Second operand 3 states. [2020-12-22 13:28:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:21,619 INFO L93 Difference]: Finished difference Result 19817 states and 25086 transitions. [2020-12-22 13:28:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:21,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 787 [2020-12-22 13:28:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:21,643 INFO L225 Difference]: With dead ends: 19817 [2020-12-22 13:28:21,643 INFO L226 Difference]: Without dead ends: 9963 [2020-12-22 13:28:21,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 785 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 13:28:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9963 states. [2020-12-22 13:28:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9963 to 9891. [2020-12-22 13:28:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9891 states. [2020-12-22 13:28:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9891 states to 9891 states and 12519 transitions. [2020-12-22 13:28:23,045 INFO L78 Accepts]: Start accepts. Automaton has 9891 states and 12519 transitions. Word has length 787 [2020-12-22 13:28:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:23,046 INFO L481 AbstractCegarLoop]: Abstraction has 9891 states and 12519 transitions. [2020-12-22 13:28:23,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 9891 states and 12519 transitions. [2020-12-22 13:28:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-12-22 13:28:23,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:23,058 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:23,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:23,274 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -647277072, now seen corresponding path program 1 times [2020-12-22 13:28:23,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:23,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547757805] [2020-12-22 13:28:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:23,486 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:28:23,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995671680] [2020-12-22 13:28:23,487 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 13:28:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:26,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 9328 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:28:26,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2020-12-22 13:28:28,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547757805] [2020-12-22 13:28:28,119 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:28:28,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995671680] [2020-12-22 13:28:28,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:28,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:28:28,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667427533] [2020-12-22 13:28:28,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:28,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:28,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:28,124 INFO L87 Difference]: Start difference. First operand 9891 states and 12519 transitions. Second operand 3 states. [2020-12-22 13:28:29,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:29,350 INFO L93 Difference]: Finished difference Result 19808 states and 25062 transitions. [2020-12-22 13:28:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:29,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 814 [2020-12-22 13:28:29,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:29,366 INFO L225 Difference]: With dead ends: 19808 [2020-12-22 13:28:29,367 INFO L226 Difference]: Without dead ends: 9945 [2020-12-22 13:28:29,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 812 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 13:28:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2020-12-22 13:28:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 9894. [2020-12-22 13:28:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9894 states. [2020-12-22 13:28:30,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 12522 transitions. [2020-12-22 13:28:30,690 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 12522 transitions. Word has length 814 [2020-12-22 13:28:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:30,691 INFO L481 AbstractCegarLoop]: Abstraction has 9894 states and 12522 transitions. [2020-12-22 13:28:30,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 12522 transitions. [2020-12-22 13:28:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-12-22 13:28:30,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:30,704 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:30,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 13:28:30,906 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:30,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:30,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2106587588, now seen corresponding path program 1 times [2020-12-22 13:28:30,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:30,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43413124] [2020-12-22 13:28:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:31,113 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:28:31,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278131927] [2020-12-22 13:28:31,114 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 13:28:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:34,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 9587 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:28:34,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2020-12-22 13:28:35,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43413124] [2020-12-22 13:28:35,607 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:28:35,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278131927] [2020-12-22 13:28:35,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:35,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:28:35,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903182827] [2020-12-22 13:28:35,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:35,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:35,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:35,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:35,610 INFO L87 Difference]: Start difference. First operand 9894 states and 12522 transitions. Second operand 3 states. [2020-12-22 13:28:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:36,880 INFO L93 Difference]: Finished difference Result 19760 states and 25011 transitions. [2020-12-22 13:28:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:36,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 832 [2020-12-22 13:28:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:36,892 INFO L225 Difference]: With dead ends: 19760 [2020-12-22 13:28:36,892 INFO L226 Difference]: Without dead ends: 9894 [2020-12-22 13:28:36,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 830 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 13:28:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9894 states. [2020-12-22 13:28:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9894 to 9894. [2020-12-22 13:28:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9894 states. [2020-12-22 13:28:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 12516 transitions. [2020-12-22 13:28:38,074 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 12516 transitions. Word has length 832 [2020-12-22 13:28:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:38,075 INFO L481 AbstractCegarLoop]: Abstraction has 9894 states and 12516 transitions. [2020-12-22 13:28:38,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 12516 transitions. [2020-12-22 13:28:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-12-22 13:28:38,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:38,087 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:38,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 13:28:38,288 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:38,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:38,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1735882298, now seen corresponding path program 1 times [2020-12-22 13:28:38,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:38,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721311195] [2020-12-22 13:28:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:38,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:28:38,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445722129] [2020-12-22 13:28:38,477 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 13:28:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:41,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 9583 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:28:41,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2020-12-22 13:28:43,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721311195] [2020-12-22 13:28:43,151 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:28:43,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445722129] [2020-12-22 13:28:43,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:28:43,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:28:43,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224307840] [2020-12-22 13:28:43,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:28:43,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:43,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:28:43,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:28:43,153 INFO L87 Difference]: Start difference. First operand 9894 states and 12516 transitions. Second operand 3 states. [2020-12-22 13:28:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:44,382 INFO L93 Difference]: Finished difference Result 19760 states and 24999 transitions. [2020-12-22 13:28:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:28:44,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 832 [2020-12-22 13:28:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:44,398 INFO L225 Difference]: With dead ends: 19760 [2020-12-22 13:28:44,398 INFO L226 Difference]: Without dead ends: 9894 [2020-12-22 13:28:44,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 830 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 13:28:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9894 states. [2020-12-22 13:28:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9894 to 9894. [2020-12-22 13:28:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9894 states. [2020-12-22 13:28:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 12513 transitions. [2020-12-22 13:28:45,699 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 12513 transitions. Word has length 832 [2020-12-22 13:28:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:45,699 INFO L481 AbstractCegarLoop]: Abstraction has 9894 states and 12513 transitions. [2020-12-22 13:28:45,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:28:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 12513 transitions. [2020-12-22 13:28:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-12-22 13:28:45,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:45,712 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:45,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 13:28:45,916 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:45,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:45,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1880945028, now seen corresponding path program 1 times [2020-12-22 13:28:45,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:45,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768872714] [2020-12-22 13:28:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:46,093 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:28:46,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228129676] [2020-12-22 13:28:46,094 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 13:28:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:28:49,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 9579 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:28:49,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:28:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 74 proven. 21 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2020-12-22 13:28:50,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768872714] [2020-12-22 13:28:50,483 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:28:50,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228129676] [2020-12-22 13:28:50,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:28:50,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 13:28:50,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385074652] [2020-12-22 13:28:50,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:28:50,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:28:50,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:28:50,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:50,485 INFO L87 Difference]: Start difference. First operand 9894 states and 12513 transitions. Second operand 6 states. [2020-12-22 13:28:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:28:51,985 INFO L93 Difference]: Finished difference Result 20120 states and 25383 transitions. [2020-12-22 13:28:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:28:51,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 832 [2020-12-22 13:28:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:28:52,000 INFO L225 Difference]: With dead ends: 20120 [2020-12-22 13:28:52,000 INFO L226 Difference]: Without dead ends: 10254 [2020-12-22 13:28:52,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:28:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10254 states. [2020-12-22 13:28:53,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10254 to 10089. [2020-12-22 13:28:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10089 states. [2020-12-22 13:28:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 12708 transitions. [2020-12-22 13:28:53,585 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 12708 transitions. Word has length 832 [2020-12-22 13:28:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:28:53,585 INFO L481 AbstractCegarLoop]: Abstraction has 10089 states and 12708 transitions. [2020-12-22 13:28:53,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:28:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 12708 transitions. [2020-12-22 13:28:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2020-12-22 13:28:53,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:28:53,597 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:53,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:28:53,799 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:28:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:28:53,800 INFO L82 PathProgramCache]: Analyzing trace with hash 928331380, now seen corresponding path program 2 times [2020-12-22 13:28:53,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:28:53,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936148435] [2020-12-22 13:28:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:28:53,981 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:28:53,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542671822] [2020-12-22 13:28:53,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 13:29:01,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:29:01,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:29:01,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 10169 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 13:29:01,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 118 proven. 40 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2020-12-22 13:29:02,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936148435] [2020-12-22 13:29:02,283 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:29:02,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542671822] [2020-12-22 13:29:02,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:29:02,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 13:29:02,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672530294] [2020-12-22 13:29:02,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:29:02,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:02,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:29:02,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:29:02,287 INFO L87 Difference]: Start difference. First operand 10089 states and 12708 transitions. Second operand 7 states. [2020-12-22 13:29:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:03,769 INFO L93 Difference]: Finished difference Result 20510 states and 25773 transitions. [2020-12-22 13:29:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:29:03,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 897 [2020-12-22 13:29:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:03,780 INFO L225 Difference]: With dead ends: 20510 [2020-12-22 13:29:03,780 INFO L226 Difference]: Without dead ends: 10449 [2020-12-22 13:29:03,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:29:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10449 states. [2020-12-22 13:29:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10449 to 10284. [2020-12-22 13:29:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10284 states. [2020-12-22 13:29:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10284 states to 10284 states and 12903 transitions. [2020-12-22 13:29:04,984 INFO L78 Accepts]: Start accepts. Automaton has 10284 states and 12903 transitions. Word has length 897 [2020-12-22 13:29:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:04,984 INFO L481 AbstractCegarLoop]: Abstraction has 10284 states and 12903 transitions. [2020-12-22 13:29:04,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:29:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 10284 states and 12903 transitions. [2020-12-22 13:29:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-12-22 13:29:05,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:05,004 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:05,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:29:05,219 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:05,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1720038156, now seen corresponding path program 3 times [2020-12-22 13:29:05,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:05,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511486163] [2020-12-22 13:29:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:05,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:29:05,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117622569] [2020-12-22 13:29:05,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 13:29:12,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:29:12,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:29:12,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 6430 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:29:12,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1449 trivial. 0 not checked. [2020-12-22 13:29:13,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511486163] [2020-12-22 13:29:13,804 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:29:13,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117622569] [2020-12-22 13:29:13,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:13,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:29:13,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614507853] [2020-12-22 13:29:13,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:29:13,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:29:13,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:29:13,806 INFO L87 Difference]: Start difference. First operand 10284 states and 12903 transitions. Second operand 4 states. [2020-12-22 13:29:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:17,069 INFO L93 Difference]: Finished difference Result 33709 states and 42549 transitions. [2020-12-22 13:29:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:29:17,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 962 [2020-12-22 13:29:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:17,102 INFO L225 Difference]: With dead ends: 33709 [2020-12-22 13:29:17,102 INFO L226 Difference]: Without dead ends: 23453 [2020-12-22 13:29:17,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:29:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23453 states. [2020-12-22 13:29:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23453 to 10290. [2020-12-22 13:29:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10290 states. [2020-12-22 13:29:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10290 states to 10290 states and 12909 transitions. [2020-12-22 13:29:18,552 INFO L78 Accepts]: Start accepts. Automaton has 10290 states and 12909 transitions. Word has length 962 [2020-12-22 13:29:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:18,553 INFO L481 AbstractCegarLoop]: Abstraction has 10290 states and 12909 transitions. [2020-12-22 13:29:18,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:29:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10290 states and 12909 transitions. [2020-12-22 13:29:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-12-22 13:29:18,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:18,565 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:18,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:29:18,767 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:18,769 INFO L82 PathProgramCache]: Analyzing trace with hash 557534087, now seen corresponding path program 1 times [2020-12-22 13:29:18,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:18,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198552445] [2020-12-22 13:29:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:18,991 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:29:18,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909737008] [2020-12-22 13:29:18,991 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 13:29:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:22,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 10786 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:29:22,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1449 trivial. 0 not checked. [2020-12-22 13:29:23,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198552445] [2020-12-22 13:29:23,764 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:29:23,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909737008] [2020-12-22 13:29:23,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:23,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:29:23,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632043804] [2020-12-22 13:29:23,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:29:23,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:23,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:29:23,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:29:23,766 INFO L87 Difference]: Start difference. First operand 10290 states and 12909 transitions. Second operand 3 states. [2020-12-22 13:29:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:25,112 INFO L93 Difference]: Finished difference Result 20579 states and 25818 transitions. [2020-12-22 13:29:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:29:25,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 968 [2020-12-22 13:29:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:25,125 INFO L225 Difference]: With dead ends: 20579 [2020-12-22 13:29:25,125 INFO L226 Difference]: Without dead ends: 10317 [2020-12-22 13:29:25,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 966 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 13:29:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10317 states. [2020-12-22 13:29:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10317 to 10293. [2020-12-22 13:29:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10293 states. [2020-12-22 13:29:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10293 states to 10293 states and 12912 transitions. [2020-12-22 13:29:26,475 INFO L78 Accepts]: Start accepts. Automaton has 10293 states and 12912 transitions. Word has length 968 [2020-12-22 13:29:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:26,476 INFO L481 AbstractCegarLoop]: Abstraction has 10293 states and 12912 transitions. [2020-12-22 13:29:26,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:29:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 10293 states and 12912 transitions. [2020-12-22 13:29:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-12-22 13:29:26,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:26,488 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:26,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 13:29:26,697 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:26,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:26,699 INFO L82 PathProgramCache]: Analyzing trace with hash -450831991, now seen corresponding path program 1 times [2020-12-22 13:29:26,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:26,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974650954] [2020-12-22 13:29:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:26,907 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:29:26,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609968887] [2020-12-22 13:29:26,907 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 13:29:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:30,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 10872 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:29:30,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1450 trivial. 0 not checked. [2020-12-22 13:29:31,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974650954] [2020-12-22 13:29:31,888 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:29:31,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609968887] [2020-12-22 13:29:31,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:31,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:29:31,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208544448] [2020-12-22 13:29:31,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:29:31,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:31,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:29:31,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:29:31,899 INFO L87 Difference]: Start difference. First operand 10293 states and 12912 transitions. Second operand 3 states. [2020-12-22 13:29:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:33,256 INFO L93 Difference]: Finished difference Result 20585 states and 25824 transitions. [2020-12-22 13:29:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:29:33,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 977 [2020-12-22 13:29:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:33,268 INFO L225 Difference]: With dead ends: 20585 [2020-12-22 13:29:33,268 INFO L226 Difference]: Without dead ends: 10320 [2020-12-22 13:29:33,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 975 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 13:29:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10320 states. [2020-12-22 13:29:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10320 to 10296. [2020-12-22 13:29:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10296 states. [2020-12-22 13:29:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10296 states to 10296 states and 12915 transitions. [2020-12-22 13:29:34,623 INFO L78 Accepts]: Start accepts. Automaton has 10296 states and 12915 transitions. Word has length 977 [2020-12-22 13:29:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:34,624 INFO L481 AbstractCegarLoop]: Abstraction has 10296 states and 12915 transitions. [2020-12-22 13:29:34,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:29:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 10296 states and 12915 transitions. [2020-12-22 13:29:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-12-22 13:29:34,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:34,636 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:34,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:29:34,842 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1710504706, now seen corresponding path program 1 times [2020-12-22 13:29:34,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:34,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432518749] [2020-12-22 13:29:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:35,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:29:35,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472593109] [2020-12-22 13:29:35,032 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 13:29:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:38,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 10958 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:29:38,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1451 trivial. 0 not checked. [2020-12-22 13:29:39,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432518749] [2020-12-22 13:29:39,994 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:29:39,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472593109] [2020-12-22 13:29:39,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:39,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:29:39,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084286811] [2020-12-22 13:29:39,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:29:39,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:39,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:29:39,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:29:39,997 INFO L87 Difference]: Start difference. First operand 10296 states and 12915 transitions. Second operand 3 states. [2020-12-22 13:29:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:41,363 INFO L93 Difference]: Finished difference Result 20579 states and 25821 transitions. [2020-12-22 13:29:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:29:41,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 986 [2020-12-22 13:29:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:41,378 INFO L225 Difference]: With dead ends: 20579 [2020-12-22 13:29:41,378 INFO L226 Difference]: Without dead ends: 10311 [2020-12-22 13:29:41,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 984 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 13:29:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2020-12-22 13:29:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 10302. [2020-12-22 13:29:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10302 states. [2020-12-22 13:29:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10302 states to 10302 states and 12921 transitions. [2020-12-22 13:29:42,769 INFO L78 Accepts]: Start accepts. Automaton has 10302 states and 12921 transitions. Word has length 986 [2020-12-22 13:29:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:42,770 INFO L481 AbstractCegarLoop]: Abstraction has 10302 states and 12921 transitions. [2020-12-22 13:29:42,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:29:42,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10302 states and 12921 transitions. [2020-12-22 13:29:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-12-22 13:29:42,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:42,782 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:42,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 13:29:42,984 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:42,985 INFO L82 PathProgramCache]: Analyzing trace with hash -932710818, now seen corresponding path program 1 times [2020-12-22 13:29:42,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:42,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262526748] [2020-12-22 13:29:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:43,200 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:29:43,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410923491] [2020-12-22 13:29:43,201 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 13:29:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:46,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 10966 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:29:46,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2020-12-22 13:29:48,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262526748] [2020-12-22 13:29:48,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:29:48,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410923491] [2020-12-22 13:29:48,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:48,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:29:48,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387301014] [2020-12-22 13:29:48,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:29:48,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:48,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:29:48,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:29:48,339 INFO L87 Difference]: Start difference. First operand 10302 states and 12921 transitions. Second operand 3 states. [2020-12-22 13:29:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:51,032 INFO L93 Difference]: Finished difference Result 30529 states and 38283 transitions. [2020-12-22 13:29:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:29:51,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 988 [2020-12-22 13:29:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:51,060 INFO L225 Difference]: With dead ends: 30529 [2020-12-22 13:29:51,061 INFO L226 Difference]: Without dead ends: 20255 [2020-12-22 13:29:51,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 986 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 13:29:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20255 states. [2020-12-22 13:29:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20255 to 10320. [2020-12-22 13:29:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10320 states. [2020-12-22 13:29:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10320 states to 10320 states and 12942 transitions. [2020-12-22 13:29:52,566 INFO L78 Accepts]: Start accepts. Automaton has 10320 states and 12942 transitions. Word has length 988 [2020-12-22 13:29:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:52,567 INFO L481 AbstractCegarLoop]: Abstraction has 10320 states and 12942 transitions. [2020-12-22 13:29:52,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:29:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 10320 states and 12942 transitions. [2020-12-22 13:29:52,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-12-22 13:29:52,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:52,578 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:52,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:29:52,779 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1328561936, now seen corresponding path program 1 times [2020-12-22 13:29:52,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:52,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078876896] [2020-12-22 13:29:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:52,970 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:29:52,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677496691] [2020-12-22 13:29:52,971 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 13:29:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:56,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 10979 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 13:29:56,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:29:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 174 proven. 65 refuted. 0 times theorem prover too weak. 1222 trivial. 0 not checked. [2020-12-22 13:29:57,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078876896] [2020-12-22 13:29:57,775 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:29:57,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677496691] [2020-12-22 13:29:57,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:29:57,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 13:29:57,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480089335] [2020-12-22 13:29:57,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:29:57,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:57,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:29:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:29:57,777 INFO L87 Difference]: Start difference. First operand 10320 states and 12942 transitions. Second operand 8 states. [2020-12-22 13:29:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:59,516 INFO L93 Difference]: Finished difference Result 20972 states and 26241 transitions. [2020-12-22 13:29:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:29:59,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 994 [2020-12-22 13:29:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:59,528 INFO L225 Difference]: With dead ends: 20972 [2020-12-22 13:29:59,528 INFO L226 Difference]: Without dead ends: 10680 [2020-12-22 13:29:59,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 987 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:29:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2020-12-22 13:30:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 10515. [2020-12-22 13:30:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10515 states. [2020-12-22 13:30:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 13137 transitions. [2020-12-22 13:30:01,004 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 13137 transitions. Word has length 994 [2020-12-22 13:30:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:01,005 INFO L481 AbstractCegarLoop]: Abstraction has 10515 states and 13137 transitions. [2020-12-22 13:30:01,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:30:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 13137 transitions. [2020-12-22 13:30:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-12-22 13:30:01,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:01,016 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:01,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 13:30:01,227 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:01,228 INFO L82 PathProgramCache]: Analyzing trace with hash -507595488, now seen corresponding path program 2 times [2020-12-22 13:30:01,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:01,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981340462] [2020-12-22 13:30:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:01,444 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:30:01,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122680257] [2020-12-22 13:30:01,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 13:30:09,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:30:09,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:09,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 11569 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 13:30:09,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 242 proven. 96 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2020-12-22 13:30:10,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981340462] [2020-12-22 13:30:10,686 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:30:10,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122680257] [2020-12-22 13:30:10,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:30:10,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 13:30:10,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940049052] [2020-12-22 13:30:10,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:30:10,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:10,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:30:10,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:30:10,688 INFO L87 Difference]: Start difference. First operand 10515 states and 13137 transitions. Second operand 9 states. [2020-12-22 13:30:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:12,503 INFO L93 Difference]: Finished difference Result 21362 states and 26631 transitions. [2020-12-22 13:30:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:30:12,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1059 [2020-12-22 13:30:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:12,515 INFO L225 Difference]: With dead ends: 21362 [2020-12-22 13:30:12,515 INFO L226 Difference]: Without dead ends: 10875 [2020-12-22 13:30:12,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1051 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:30:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10875 states. [2020-12-22 13:30:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10875 to 10710. [2020-12-22 13:30:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10710 states. [2020-12-22 13:30:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10710 states to 10710 states and 13332 transitions. [2020-12-22 13:30:14,024 INFO L78 Accepts]: Start accepts. Automaton has 10710 states and 13332 transitions. Word has length 1059 [2020-12-22 13:30:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:14,025 INFO L481 AbstractCegarLoop]: Abstraction has 10710 states and 13332 transitions. [2020-12-22 13:30:14,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:30:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10710 states and 13332 transitions. [2020-12-22 13:30:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2020-12-22 13:30:14,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:14,042 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:14,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 13:30:14,256 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:14,258 INFO L82 PathProgramCache]: Analyzing trace with hash -514340224, now seen corresponding path program 3 times [2020-12-22 13:30:14,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:14,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024626780] [2020-12-22 13:30:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:14,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:30:14,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34039725] [2020-12-22 13:30:14,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 13:30:21,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:30:21,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:30:21,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 6457 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:30:21,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2836 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2020-12-22 13:30:22,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024626780] [2020-12-22 13:30:22,684 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:30:22,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34039725] [2020-12-22 13:30:22,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:30:22,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:30:22,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662386398] [2020-12-22 13:30:22,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:30:22,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:22,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:30:22,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:30:22,686 INFO L87 Difference]: Start difference. First operand 10710 states and 13332 transitions. Second operand 4 states. [2020-12-22 13:30:26,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:26,519 INFO L93 Difference]: Finished difference Result 35287 states and 44247 transitions. [2020-12-22 13:30:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:30:26,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1124 [2020-12-22 13:30:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:26,546 INFO L225 Difference]: With dead ends: 35287 [2020-12-22 13:30:26,546 INFO L226 Difference]: Without dead ends: 24605 [2020-12-22 13:30:26,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 1122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:30:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24605 states.