/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-net--unix--unix.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:28:54,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:28:54,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:28:54,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:28:54,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:28:54,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:28:54,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:28:54,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:28:54,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:28:54,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:28:54,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:28:54,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:28:54,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:28:54,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:28:54,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:28:54,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:28:54,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:28:54,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:28:54,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:28:54,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:28:54,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:28:54,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:28:54,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:28:54,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:28:54,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:28:54,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:28:54,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:28:54,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:28:54,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:28:54,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:28:54,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:28:54,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:28:54,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:28:54,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:28:54,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:28:54,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:28:54,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:28:54,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:28:54,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:28:54,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:28:54,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:28:54,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:28:54,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:28:54,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:28:54,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:28:54,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:28:54,783 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:28:54,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:28:54,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:28:54,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:28:54,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:28:54,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:28:54,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:28:54,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:28:54,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:28:54,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:28:54,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:28:54,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:28:54,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:28:54,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:28:54,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:28:54,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:28:54,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:28:54,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:28:54,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:28:54,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:28:54,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:28:54,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:28:55,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:28:55,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:28:55,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:28:55,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:28:55,277 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:28:55,278 INFO L432 ainManager$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-net--unix--unix.ko-entry_point.cil.out.i [2020-12-22 13:28:55,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5519654/7a7f0eae9530446a93524afaf78fb160/FLAG52bc4f3cd [2020-12-22 13:28:56,611 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:28:56,612 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-net--unix--unix.ko-entry_point.cil.out.i [2020-12-22 13:28:56,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5519654/7a7f0eae9530446a93524afaf78fb160/FLAG52bc4f3cd [2020-12-22 13:28:56,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5519654/7a7f0eae9530446a93524afaf78fb160 [2020-12-22 13:28:56,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:28:56,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:28:56,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:28:56,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:28:56,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:28:56,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:28:56" (1/1) ... [2020-12-22 13:28:56,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5701fe44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:28:56, skipping insertion in model container [2020-12-22 13:28:56,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:28:56" (1/1) ... [2020-12-22 13:28:56,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:28:57,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:28:57,644 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2020-12-22 13:28:57,645 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2020-12-22 13:28:58,621 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-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2020-12-22 13:29:00,952 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:29:00,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:29:01,077 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:29:01,238 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2020-12-22 13:29:01,238 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2020-12-22 13:29:01,266 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-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2020-12-22 13:29:01,894 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:29:01,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:29:02,913 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:29:02,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02 WrapperNode [2020-12-22 13:29:02,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:29:02,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:29:02,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:29:02,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:29:02,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:03,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:05,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:29:05,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:29:05,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:29:05,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:29:05,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:05,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:05,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:05,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:07,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:07,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:07,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (1/1) ... [2020-12-22 13:29:07,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:29:07,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:29:07,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:29:07,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:29:07,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (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 13:29:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:29:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 13:29:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2020-12-22 13:29:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 13:29:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:29:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release_sock [2020-12-22 13:29:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release_sock [2020-12-22 13:29:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:29:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:29:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:29:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:29:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:29:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:29:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:29:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:29:48,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:29:48,968 INFO L299 CfgBuilder]: Removed 16976 assume(true) statements. [2020-12-22 13:29:48,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:29:48 BoogieIcfgContainer [2020-12-22 13:29:48,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:29:48,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:29:48,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:29:48,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:29:48,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:28:56" (1/3) ... [2020-12-22 13:29:48,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c7f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:29:48, skipping insertion in model container [2020-12-22 13:29:48,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:29:02" (2/3) ... [2020-12-22 13:29:48,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c7f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:29:48, skipping insertion in model container [2020-12-22 13:29:48,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:29:48" (3/3) ... [2020-12-22 13:29:48,991 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2020-12-22 13:29:48,998 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:29:49,008 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 13:29:49,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 13:29:49,094 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:29:49,094 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:29:49,094 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:29:49,094 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:29:49,094 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:29:49,094 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:29:49,095 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:29:49,095 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:29:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 12450 states. [2020-12-22 13:29:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 13:29:49,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:49,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:29:49,282 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:49,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1034210886, now seen corresponding path program 1 times [2020-12-22 13:29:49,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:49,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364045249] [2020-12-22 13:29:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:50,228 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 13:29:50,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364045249] [2020-12-22 13:29:50,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:50,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:29:50,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412452076] [2020-12-22 13:29:50,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:29:50,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:50,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:29:50,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:29:50,273 INFO L87 Difference]: Start difference. First operand 12450 states. Second operand 3 states. [2020-12-22 13:29:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:51,753 INFO L93 Difference]: Finished difference Result 33694 states and 47646 transitions. [2020-12-22 13:29:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:29:51,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 13:29:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:51,898 INFO L225 Difference]: With dead ends: 33694 [2020-12-22 13:29:51,898 INFO L226 Difference]: Without dead ends: 21094 [2020-12-22 13:29:51,976 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 13:29:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21094 states. [2020-12-22 13:29:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21094 to 20931. [2020-12-22 13:29:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20931 states. [2020-12-22 13:29:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20931 states to 20931 states and 29314 transitions. [2020-12-22 13:29:53,019 INFO L78 Accepts]: Start accepts. Automaton has 20931 states and 29314 transitions. Word has length 82 [2020-12-22 13:29:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:53,021 INFO L481 AbstractCegarLoop]: Abstraction has 20931 states and 29314 transitions. [2020-12-22 13:29:53,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:29:53,022 INFO L276 IsEmpty]: Start isEmpty. Operand 20931 states and 29314 transitions. [2020-12-22 13:29:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 13:29:53,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:53,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:29:53,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:29:53,029 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2021014327, now seen corresponding path program 1 times [2020-12-22 13:29:53,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:53,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524100131] [2020-12-22 13:29:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:53,353 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 13:29:53,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524100131] [2020-12-22 13:29:53,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:53,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:29:53,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827641939] [2020-12-22 13:29:53,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:29:53,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:53,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:29:53,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:29:53,357 INFO L87 Difference]: Start difference. First operand 20931 states and 29314 transitions. Second operand 3 states. [2020-12-22 13:29:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:54,860 INFO L93 Difference]: Finished difference Result 55529 states and 77909 transitions. [2020-12-22 13:29:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:29:54,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 13:29:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:55,054 INFO L225 Difference]: With dead ends: 55529 [2020-12-22 13:29:55,055 INFO L226 Difference]: Without dead ends: 34853 [2020-12-22 13:29:55,129 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 13:29:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34853 states. [2020-12-22 13:29:56,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34853 to 34782. [2020-12-22 13:29:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34782 states. [2020-12-22 13:29:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34782 states to 34782 states and 48807 transitions. [2020-12-22 13:29:56,526 INFO L78 Accepts]: Start accepts. Automaton has 34782 states and 48807 transitions. Word has length 83 [2020-12-22 13:29:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:29:56,528 INFO L481 AbstractCegarLoop]: Abstraction has 34782 states and 48807 transitions. [2020-12-22 13:29:56,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:29:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 34782 states and 48807 transitions. [2020-12-22 13:29:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 13:29:56,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:29:56,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:29:56,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:29:56,534 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:29:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:29:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1164295681, now seen corresponding path program 1 times [2020-12-22 13:29:56,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:29:56,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687849135] [2020-12-22 13:29:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:29:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:29:56,831 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 13:29:56,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687849135] [2020-12-22 13:29:56,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:29:56,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:29:56,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597318526] [2020-12-22 13:29:56,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:29:56,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:29:56,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:29:56,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:29:56,844 INFO L87 Difference]: Start difference. First operand 34782 states and 48807 transitions. Second operand 3 states. [2020-12-22 13:29:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:29:58,507 INFO L93 Difference]: Finished difference Result 87943 states and 123567 transitions. [2020-12-22 13:29:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:29:58,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 13:29:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:29:58,716 INFO L225 Difference]: With dead ends: 87943 [2020-12-22 13:29:58,717 INFO L226 Difference]: Without dead ends: 53416 [2020-12-22 13:29:58,802 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 13:29:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53416 states. [2020-12-22 13:30:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53416 to 53402. [2020-12-22 13:30:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53402 states. [2020-12-22 13:30:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53402 states to 53402 states and 75032 transitions. [2020-12-22 13:30:00,823 INFO L78 Accepts]: Start accepts. Automaton has 53402 states and 75032 transitions. Word has length 89 [2020-12-22 13:30:00,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:00,825 INFO L481 AbstractCegarLoop]: Abstraction has 53402 states and 75032 transitions. [2020-12-22 13:30:00,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:30:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 53402 states and 75032 transitions. [2020-12-22 13:30:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 13:30:00,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:00,841 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:30:00,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:30:00,841 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1334107731, now seen corresponding path program 1 times [2020-12-22 13:30:00,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:00,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137830419] [2020-12-22 13:30:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:30:01,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137830419] [2020-12-22 13:30:01,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:30:01,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:30:01,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190094979] [2020-12-22 13:30:01,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:30:01,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:01,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:30:01,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:30:01,564 INFO L87 Difference]: Start difference. First operand 53402 states and 75032 transitions. Second operand 3 states. [2020-12-22 13:30:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:04,071 INFO L93 Difference]: Finished difference Result 82828 states and 117761 transitions. [2020-12-22 13:30:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:30:04,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-12-22 13:30:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:04,622 INFO L225 Difference]: With dead ends: 82828 [2020-12-22 13:30:04,622 INFO L226 Difference]: Without dead ends: 82806 [2020-12-22 13:30:04,649 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 13:30:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82806 states. [2020-12-22 13:30:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82806 to 63005. [2020-12-22 13:30:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63005 states. [2020-12-22 13:30:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63005 states to 63005 states and 88585 transitions. [2020-12-22 13:30:06,833 INFO L78 Accepts]: Start accepts. Automaton has 63005 states and 88585 transitions. Word has length 149 [2020-12-22 13:30:06,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:06,834 INFO L481 AbstractCegarLoop]: Abstraction has 63005 states and 88585 transitions. [2020-12-22 13:30:06,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:30:06,834 INFO L276 IsEmpty]: Start isEmpty. Operand 63005 states and 88585 transitions. [2020-12-22 13:30:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 13:30:06,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:06,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:06,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:30:06,868 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1674999198, now seen corresponding path program 1 times [2020-12-22 13:30:06,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:06,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020219991] [2020-12-22 13:30:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:30:07,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020219991] [2020-12-22 13:30:07,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:30:07,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:30:07,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33609180] [2020-12-22 13:30:07,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:30:07,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:07,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:30:07,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:30:07,287 INFO L87 Difference]: Start difference. First operand 63005 states and 88585 transitions. Second operand 3 states. [2020-12-22 13:30:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:12,842 INFO L93 Difference]: Finished difference Result 188497 states and 265173 transitions. [2020-12-22 13:30:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:30:12,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 13:30:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:13,341 INFO L225 Difference]: With dead ends: 188497 [2020-12-22 13:30:13,342 INFO L226 Difference]: Without dead ends: 125747 [2020-12-22 13:30:13,478 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 13:30:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125747 states. [2020-12-22 13:30:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125747 to 63013. [2020-12-22 13:30:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63013 states. [2020-12-22 13:30:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63013 states to 63013 states and 88593 transitions. [2020-12-22 13:30:16,399 INFO L78 Accepts]: Start accepts. Automaton has 63013 states and 88593 transitions. Word has length 165 [2020-12-22 13:30:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:16,400 INFO L481 AbstractCegarLoop]: Abstraction has 63013 states and 88593 transitions. [2020-12-22 13:30:16,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:30:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 63013 states and 88593 transitions. [2020-12-22 13:30:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 13:30:16,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:16,428 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:16,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:30:16,429 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1540985692, now seen corresponding path program 1 times [2020-12-22 13:30:16,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:16,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889200163] [2020-12-22 13:30:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:30:17,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889200163] [2020-12-22 13:30:17,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054841061] [2020-12-22 13:30:17,172 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 13:30:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:19,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 3275 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:30:19,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:30:19,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:30:19,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2020-12-22 13:30:19,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393518473] [2020-12-22 13:30:19,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:30:19,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:19,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:30:19,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:30:19,685 INFO L87 Difference]: Start difference. First operand 63013 states and 88593 transitions. Second operand 5 states. [2020-12-22 13:30:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:30:24,464 INFO L93 Difference]: Finished difference Result 125837 states and 176985 transitions. [2020-12-22 13:30:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:30:24,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-12-22 13:30:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:30:24,746 INFO L225 Difference]: With dead ends: 125837 [2020-12-22 13:30:24,747 INFO L226 Difference]: Without dead ends: 62999 [2020-12-22 13:30:24,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:30:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62999 states. [2020-12-22 13:30:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62999 to 62901. [2020-12-22 13:30:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62901 states. [2020-12-22 13:30:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62901 states to 62901 states and 88449 transitions. [2020-12-22 13:30:27,945 INFO L78 Accepts]: Start accepts. Automaton has 62901 states and 88449 transitions. Word has length 165 [2020-12-22 13:30:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:30:27,945 INFO L481 AbstractCegarLoop]: Abstraction has 62901 states and 88449 transitions. [2020-12-22 13:30:27,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:30:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 62901 states and 88449 transitions. [2020-12-22 13:30:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 13:30:27,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:30:27,987 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:28,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 13:30:28,202 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:30:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:30:28,204 INFO L82 PathProgramCache]: Analyzing trace with hash -402126144, now seen corresponding path program 1 times [2020-12-22 13:30:28,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:30:28,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122071767] [2020-12-22 13:30:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:30:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:30:29,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122071767] [2020-12-22 13:30:29,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645077086] [2020-12-22 13:30:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:30:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:30:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-22 13:30:37,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:30:37,681 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 13:30:37,686 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 13:30:37,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:30:37,691 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 13:30:37,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2020-12-22 13:30:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:30:37,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:30:37,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2020-12-22 13:30:37,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101942604] [2020-12-22 13:30:37,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 13:30:37,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:30:37,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 13:30:37,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-22 13:30:37,773 INFO L87 Difference]: Start difference. First operand 62901 states and 88449 transitions. Second operand 17 states. [2020-12-22 13:32:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:14,183 INFO L93 Difference]: Finished difference Result 510209 states and 725653 transitions. [2020-12-22 13:32:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 13:32:14,184 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 167 [2020-12-22 13:32:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:16,081 INFO L225 Difference]: With dead ends: 510209 [2020-12-22 13:32:16,081 INFO L226 Difference]: Without dead ends: 447563 [2020-12-22 13:32:16,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=405, Invalid=1155, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 13:32:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447563 states.