/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/aws-c-common/aws_byte_buf_secure_zero_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:41:06,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:41:06,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:41:06,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:41:06,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:41:06,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:41:06,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:41:06,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:41:06,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:41:06,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:41:06,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:41:06,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:41:06,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:41:06,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:41:06,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:41:06,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:41:06,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:41:06,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:41:06,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:41:06,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:41:06,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:41:06,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:41:06,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:41:06,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:41:06,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:41:06,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:41:06,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:41:06,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:41:06,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:41:06,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:41:06,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:41:06,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:41:06,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:41:06,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:41:06,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:41:06,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:41:06,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:41:06,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:41:06,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:41:06,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:41:06,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:41:06,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:41:06,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:41:07,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:41:07,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:41:07,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:41:07,002 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:41:07,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:41:07,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:41:07,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:41:07,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:41:07,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:41:07,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:41:07,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:41:07,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:41:07,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:41:07,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:41:07,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:41:07,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:41:07,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:41:07,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:41:07,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:41:07,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:41:07,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:41:07,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:41:07,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:41:07,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:41:07,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:41:07,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:41:07,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:41:07,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:41:07,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:41:07,484 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:41:07,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2020-12-22 11:41:07,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca0c7675/8050e779084b4606b9ee2e834170d35c/FLAG01e05a0e1 [2020-12-22 11:41:08,635 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:41:08,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2020-12-22 11:41:08,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca0c7675/8050e779084b4606b9ee2e834170d35c/FLAG01e05a0e1 [2020-12-22 11:41:09,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca0c7675/8050e779084b4606b9ee2e834170d35c [2020-12-22 11:41:09,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:41:09,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:41:09,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:41:09,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:41:09,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:41:09,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:41:09" (1/1) ... [2020-12-22 11:41:09,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eef7795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:09, skipping insertion in model container [2020-12-22 11:41:09,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:41:09" (1/1) ... [2020-12-22 11:41:09,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:41:09,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:41:09,642 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/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2020-12-22 11:41:09,652 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/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2020-12-22 11:41:09,698 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:41:09,707 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:41:11,109 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,111 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,111 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,112 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,113 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,131 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,132 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,137 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,138 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:41:11,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:41:11,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:41:11,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:41:11,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:41:11,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:41:11,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:41:11,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:41:11,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:41:11,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:41:11,816 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:41:11,992 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:11,993 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:41:12,130 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:41:12,147 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/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2020-12-22 11:41:12,148 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/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2020-12-22 11:41:12,150 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:41:12,150 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:41:12,190 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,192 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,193 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,194 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,195 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,201 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,202 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,206 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,212 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:41:12,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:41:12,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:41:12,272 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:41:12,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:41:12,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:41:12,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:41:12,274 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:41:12,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:41:12,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:41:12,310 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:41:12,394 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,395 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:41:12,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:41:13,703 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:41:13,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13 WrapperNode [2020-12-22 11:41:13,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:41:13,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:41:13,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:41:13,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:41:13,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:41:13,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:41:13,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:41:13,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:41:13,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:13,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:14,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:14,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:14,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (1/1) ... [2020-12-22 11:41:14,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:41:14,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:41:14,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:41:14,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:41:14,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (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 11:41:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:41:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:41:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:41:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:41:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:41:14,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:41:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:41:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:41:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:41:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:41:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:41:23,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:41:23,831 INFO L299 CfgBuilder]: Removed 59 assume(true) statements. [2020-12-22 11:41:23,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:41:23 BoogieIcfgContainer [2020-12-22 11:41:23,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:41:23,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:41:23,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:41:23,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:41:23,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:41:09" (1/3) ... [2020-12-22 11:41:23,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2641ece4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:41:23, skipping insertion in model container [2020-12-22 11:41:23,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:41:13" (2/3) ... [2020-12-22 11:41:23,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2641ece4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:41:23, skipping insertion in model container [2020-12-22 11:41:23,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:41:23" (3/3) ... [2020-12-22 11:41:23,841 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness.i [2020-12-22 11:41:23,848 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:41:23,855 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 11:41:23,874 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:41:23,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:41:23,900 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:41:23,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:41:23,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:41:23,901 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:41:23,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:41:23,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:41:23,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:41:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2020-12-22 11:41:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 11:41:23,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:23,927 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] [2020-12-22 11:41:23,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash -158234594, now seen corresponding path program 1 times [2020-12-22 11:41:23,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:23,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930299945] [2020-12-22 11:41:23,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:24,736 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 11:41:24,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930299945] [2020-12-22 11:41:24,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:24,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:41:24,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850071794] [2020-12-22 11:41:24,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:41:24,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:24,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:41:24,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:41:24,784 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2020-12-22 11:41:24,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:24,843 INFO L93 Difference]: Finished difference Result 222 states and 307 transitions. [2020-12-22 11:41:24,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:41:24,845 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2020-12-22 11:41:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:24,858 INFO L225 Difference]: With dead ends: 222 [2020-12-22 11:41:24,860 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 11:41:24,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:41:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 11:41:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-22 11:41:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:41:24,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2020-12-22 11:41:24,924 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 29 [2020-12-22 11:41:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:24,925 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2020-12-22 11:41:24,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:41:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2020-12-22 11:41:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 11:41:24,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:24,929 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] [2020-12-22 11:41:24,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:41:24,930 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:24,933 INFO L82 PathProgramCache]: Analyzing trace with hash -4552034, now seen corresponding path program 1 times [2020-12-22 11:41:24,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:24,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691968717] [2020-12-22 11:41:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:25,328 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 11:41:25,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691968717] [2020-12-22 11:41:25,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:25,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:25,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816513508] [2020-12-22 11:41:25,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:25,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:25,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:25,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:25,344 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand 4 states. [2020-12-22 11:41:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:25,478 INFO L93 Difference]: Finished difference Result 190 states and 246 transitions. [2020-12-22 11:41:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:41:25,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-12-22 11:41:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:25,483 INFO L225 Difference]: With dead ends: 190 [2020-12-22 11:41:25,484 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 11:41:25,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:41:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 11:41:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-22 11:41:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:41:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 137 transitions. [2020-12-22 11:41:25,508 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 137 transitions. Word has length 29 [2020-12-22 11:41:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:25,508 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 137 transitions. [2020-12-22 11:41:25,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 137 transitions. [2020-12-22 11:41:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 11:41:25,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:25,511 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] [2020-12-22 11:41:25,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:41:25,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1058096316, now seen corresponding path program 1 times [2020-12-22 11:41:25,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:25,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555611011] [2020-12-22 11:41:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:25,891 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 11:41:25,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555611011] [2020-12-22 11:41:25,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:25,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:25,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198684269] [2020-12-22 11:41:25,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:25,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:25,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:25,894 INFO L87 Difference]: Start difference. First operand 108 states and 137 transitions. Second operand 4 states. [2020-12-22 11:41:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:26,106 INFO L93 Difference]: Finished difference Result 231 states and 298 transitions. [2020-12-22 11:41:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:26,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 11:41:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:26,110 INFO L225 Difference]: With dead ends: 231 [2020-12-22 11:41:26,111 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 11:41:26,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:41:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 11:41:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-12-22 11:41:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 11:41:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 145 transitions. [2020-12-22 11:41:26,137 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 145 transitions. Word has length 41 [2020-12-22 11:41:26,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:26,138 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 145 transitions. [2020-12-22 11:41:26,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 145 transitions. [2020-12-22 11:41:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 11:41:26,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:26,142 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] [2020-12-22 11:41:26,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:41:26,143 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:26,144 INFO L82 PathProgramCache]: Analyzing trace with hash 996056702, now seen corresponding path program 1 times [2020-12-22 11:41:26,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:26,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031526259] [2020-12-22 11:41:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:26,620 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 11:41:26,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031526259] [2020-12-22 11:41:26,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:26,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:26,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114858229] [2020-12-22 11:41:26,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:26,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:26,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:26,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:26,623 INFO L87 Difference]: Start difference. First operand 116 states and 145 transitions. Second operand 5 states. [2020-12-22 11:41:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:26,751 INFO L93 Difference]: Finished difference Result 156 states and 191 transitions. [2020-12-22 11:41:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:41:26,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 11:41:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:26,754 INFO L225 Difference]: With dead ends: 156 [2020-12-22 11:41:26,754 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 11:41:26,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 11:41:26,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 11:41:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-22 11:41:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 11:41:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 144 transitions. [2020-12-22 11:41:26,773 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 144 transitions. Word has length 41 [2020-12-22 11:41:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:26,774 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 144 transitions. [2020-12-22 11:41:26,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:26,774 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 144 transitions. [2020-12-22 11:41:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 11:41:26,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:26,778 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] [2020-12-22 11:41:26,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:41:26,778 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:26,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1931250963, now seen corresponding path program 1 times [2020-12-22 11:41:26,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:26,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016193352] [2020-12-22 11:41:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:27,498 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 11:41:27,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016193352] [2020-12-22 11:41:27,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:27,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:41:27,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342454453] [2020-12-22 11:41:27,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:41:27,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:27,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:41:27,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:41:27,501 INFO L87 Difference]: Start difference. First operand 116 states and 144 transitions. Second operand 6 states. [2020-12-22 11:41:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:27,799 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2020-12-22 11:41:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 11:41:27,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-12-22 11:41:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:27,801 INFO L225 Difference]: With dead ends: 184 [2020-12-22 11:41:27,801 INFO L226 Difference]: Without dead ends: 180 [2020-12-22 11:41:27,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-22 11:41:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 124. [2020-12-22 11:41:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-22 11:41:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2020-12-22 11:41:27,808 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 47 [2020-12-22 11:41:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:27,808 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2020-12-22 11:41:27,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:41:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2020-12-22 11:41:27,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 11:41:27,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:27,810 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] [2020-12-22 11:41:27,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:41:27,810 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:27,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1524322635, now seen corresponding path program 1 times [2020-12-22 11:41:27,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:27,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902576425] [2020-12-22 11:41:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:28,350 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 11:41:28,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902576425] [2020-12-22 11:41:28,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:28,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:28,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447671201] [2020-12-22 11:41:28,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:28,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:28,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:28,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:28,353 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand 5 states. [2020-12-22 11:41:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:30,766 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions. [2020-12-22 11:41:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:41:30,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 11:41:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:30,769 INFO L225 Difference]: With dead ends: 177 [2020-12-22 11:41:30,769 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 11:41:30,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 11:41:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 11:41:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2020-12-22 11:41:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-22 11:41:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 154 transitions. [2020-12-22 11:41:30,777 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 154 transitions. Word has length 51 [2020-12-22 11:41:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:30,777 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 154 transitions. [2020-12-22 11:41:30,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 154 transitions. [2020-12-22 11:41:30,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 11:41:30,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:30,779 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] [2020-12-22 11:41:30,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:41:30,779 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2090586291, now seen corresponding path program 1 times [2020-12-22 11:41:30,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:30,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320479270] [2020-12-22 11:41:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:35,358 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 11:41:35,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320479270] [2020-12-22 11:41:35,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:35,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:41:35,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539508651] [2020-12-22 11:41:35,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:41:35,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:41:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:41:35,361 INFO L87 Difference]: Start difference. First operand 126 states and 154 transitions. Second operand 9 states. [2020-12-22 11:41:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:40,144 INFO L93 Difference]: Finished difference Result 249 states and 305 transitions. [2020-12-22 11:41:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 11:41:40,145 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-22 11:41:40,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:40,146 INFO L225 Difference]: With dead ends: 249 [2020-12-22 11:41:40,146 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 11:41:40,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-12-22 11:41:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 11:41:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-12-22 11:41:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 11:41:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2020-12-22 11:41:40,153 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 51 [2020-12-22 11:41:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:40,154 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2020-12-22 11:41:40,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:41:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2020-12-22 11:41:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 11:41:40,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:40,155 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] [2020-12-22 11:41:40,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:41:40,155 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:40,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash -122386677, now seen corresponding path program 1 times [2020-12-22 11:41:40,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:40,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433646407] [2020-12-22 11:41:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:40,869 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 11:41:40,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433646407] [2020-12-22 11:41:40,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:40,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:41:40,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317220825] [2020-12-22 11:41:40,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:41:40,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:41:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:40,872 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand 10 states. [2020-12-22 11:41:50,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:50,643 INFO L93 Difference]: Finished difference Result 361 states and 446 transitions. [2020-12-22 11:41:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 11:41:50,645 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-22 11:41:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:50,648 INFO L225 Difference]: With dead ends: 361 [2020-12-22 11:41:50,648 INFO L226 Difference]: Without dead ends: 256 [2020-12-22 11:41:50,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-12-22 11:41:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-12-22 11:41:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 145. [2020-12-22 11:41:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-22 11:41:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 175 transitions. [2020-12-22 11:41:50,657 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 175 transitions. Word has length 59 [2020-12-22 11:41:50,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:50,657 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 175 transitions. [2020-12-22 11:41:50,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:41:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 175 transitions. [2020-12-22 11:41:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 11:41:50,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:50,659 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] [2020-12-22 11:41:50,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:41:50,660 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:50,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1263816717, now seen corresponding path program 1 times [2020-12-22 11:41:50,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:50,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414059023] [2020-12-22 11:41:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:51,202 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 11:41:51,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414059023] [2020-12-22 11:41:51,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:51,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:41:51,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077093169] [2020-12-22 11:41:51,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:41:51,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:51,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:41:51,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:41:51,204 INFO L87 Difference]: Start difference. First operand 145 states and 175 transitions. Second operand 7 states. [2020-12-22 11:41:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:51,608 INFO L93 Difference]: Finished difference Result 291 states and 342 transitions. [2020-12-22 11:41:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:41:51,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-12-22 11:41:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:51,611 INFO L225 Difference]: With dead ends: 291 [2020-12-22 11:41:51,611 INFO L226 Difference]: Without dead ends: 174 [2020-12-22 11:41:51,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:51,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-22 11:41:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 145. [2020-12-22 11:41:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-22 11:41:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-12-22 11:41:51,624 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 59 [2020-12-22 11:41:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:51,624 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-12-22 11:41:51,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:41:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-12-22 11:41:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 11:41:51,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:51,655 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] [2020-12-22 11:41:51,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:41:51,656 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:51,657 INFO L82 PathProgramCache]: Analyzing trace with hash 907824687, now seen corresponding path program 1 times [2020-12-22 11:41:51,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:51,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506074226] [2020-12-22 11:41:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:52,194 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 11:41:52,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506074226] [2020-12-22 11:41:52,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:52,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:41:52,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164378584] [2020-12-22 11:41:52,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:41:52,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:52,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:41:52,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:41:52,200 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 5 states. [2020-12-22 11:41:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:54,899 INFO L93 Difference]: Finished difference Result 371 states and 438 transitions. [2020-12-22 11:41:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:41:54,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 11:41:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:54,902 INFO L225 Difference]: With dead ends: 371 [2020-12-22 11:41:54,902 INFO L226 Difference]: Without dead ends: 251 [2020-12-22 11:41:54,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:41:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-12-22 11:41:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 159. [2020-12-22 11:41:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-12-22 11:41:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 185 transitions. [2020-12-22 11:41:54,911 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 185 transitions. Word has length 63 [2020-12-22 11:41:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:54,911 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 185 transitions. [2020-12-22 11:41:54,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:41:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 185 transitions. [2020-12-22 11:41:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 11:41:54,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:54,913 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] [2020-12-22 11:41:54,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:41:54,913 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:54,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1291837935, now seen corresponding path program 1 times [2020-12-22 11:41:54,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:54,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735480724] [2020-12-22 11:41:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:55,107 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 11:41:55,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735480724] [2020-12-22 11:41:55,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:55,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:41:55,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252743553] [2020-12-22 11:41:55,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:41:55,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:55,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:41:55,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:41:55,110 INFO L87 Difference]: Start difference. First operand 159 states and 185 transitions. Second operand 4 states. [2020-12-22 11:41:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:41:55,281 INFO L93 Difference]: Finished difference Result 289 states and 336 transitions. [2020-12-22 11:41:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:41:55,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 11:41:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:41:55,283 INFO L225 Difference]: With dead ends: 289 [2020-12-22 11:41:55,284 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 11:41:55,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:41:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 11:41:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 134. [2020-12-22 11:41:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-22 11:41:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 151 transitions. [2020-12-22 11:41:55,291 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 151 transitions. Word has length 63 [2020-12-22 11:41:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:41:55,292 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 151 transitions. [2020-12-22 11:41:55,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:41:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 151 transitions. [2020-12-22 11:41:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 11:41:55,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:41:55,293 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] [2020-12-22 11:41:55,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:41:55,293 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:41:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:41:55,294 INFO L82 PathProgramCache]: Analyzing trace with hash 354357871, now seen corresponding path program 1 times [2020-12-22 11:41:55,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:41:55,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166065817] [2020-12-22 11:41:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:41:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:41:56,063 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 11:41:56,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166065817] [2020-12-22 11:41:56,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:41:56,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 11:41:56,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947982436] [2020-12-22 11:41:56,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:41:56,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:41:56,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:41:56,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:41:56,067 INFO L87 Difference]: Start difference. First operand 134 states and 151 transitions. Second operand 10 states. [2020-12-22 11:42:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:01,504 INFO L93 Difference]: Finished difference Result 353 states and 399 transitions. [2020-12-22 11:42:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 11:42:01,505 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-12-22 11:42:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:01,507 INFO L225 Difference]: With dead ends: 353 [2020-12-22 11:42:01,507 INFO L226 Difference]: Without dead ends: 259 [2020-12-22 11:42:01,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-12-22 11:42:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-22 11:42:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 208. [2020-12-22 11:42:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-12-22 11:42:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 235 transitions. [2020-12-22 11:42:01,520 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 235 transitions. Word has length 63 [2020-12-22 11:42:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:01,520 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 235 transitions. [2020-12-22 11:42:01,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:42:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 235 transitions. [2020-12-22 11:42:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 11:42:01,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:01,521 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] [2020-12-22 11:42:01,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:42:01,522 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash 213809261, now seen corresponding path program 1 times [2020-12-22 11:42:01,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:01,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664020290] [2020-12-22 11:42:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:07,071 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 11:42:07,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664020290] [2020-12-22 11:42:07,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:07,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:42:07,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647886222] [2020-12-22 11:42:07,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:42:07,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:07,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:42:07,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:42:07,074 INFO L87 Difference]: Start difference. First operand 208 states and 235 transitions. Second operand 8 states. [2020-12-22 11:42:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:09,543 INFO L93 Difference]: Finished difference Result 411 states and 467 transitions. [2020-12-22 11:42:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:42:09,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-12-22 11:42:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:09,548 INFO L225 Difference]: With dead ends: 411 [2020-12-22 11:42:09,548 INFO L226 Difference]: Without dead ends: 291 [2020-12-22 11:42:09,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:42:09,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-12-22 11:42:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 208. [2020-12-22 11:42:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-12-22 11:42:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 233 transitions. [2020-12-22 11:42:09,562 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 233 transitions. Word has length 63 [2020-12-22 11:42:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:09,563 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 233 transitions. [2020-12-22 11:42:09,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:42:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 233 transitions. [2020-12-22 11:42:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 11:42:09,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:09,564 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] [2020-12-22 11:42:09,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 11:42:09,564 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash 694910338, now seen corresponding path program 1 times [2020-12-22 11:42:09,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:09,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956990243] [2020-12-22 11:42:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:14,860 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 11:42:14,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956990243] [2020-12-22 11:42:14,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:14,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:42:14,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469566003] [2020-12-22 11:42:14,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:42:14,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:42:14,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:42:14,865 INFO L87 Difference]: Start difference. First operand 208 states and 233 transitions. Second operand 8 states. [2020-12-22 11:42:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:17,655 INFO L93 Difference]: Finished difference Result 410 states and 463 transitions. [2020-12-22 11:42:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 11:42:17,657 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-12-22 11:42:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:17,659 INFO L225 Difference]: With dead ends: 410 [2020-12-22 11:42:17,659 INFO L226 Difference]: Without dead ends: 282 [2020-12-22 11:42:17,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 11:42:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-22 11:42:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 208. [2020-12-22 11:42:17,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-12-22 11:42:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 231 transitions. [2020-12-22 11:42:17,673 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 231 transitions. Word has length 69 [2020-12-22 11:42:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:17,673 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 231 transitions. [2020-12-22 11:42:17,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:42:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 231 transitions. [2020-12-22 11:42:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 11:42:17,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:17,674 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] [2020-12-22 11:42:17,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 11:42:17,675 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:17,676 INFO L82 PathProgramCache]: Analyzing trace with hash 448544190, now seen corresponding path program 1 times [2020-12-22 11:42:17,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:17,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021507792] [2020-12-22 11:42:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:18,054 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 11:42:18,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021507792] [2020-12-22 11:42:18,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:42:18,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:42:18,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459168546] [2020-12-22 11:42:18,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:42:18,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:18,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:42:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:42:18,061 INFO L87 Difference]: Start difference. First operand 208 states and 231 transitions. Second operand 3 states. [2020-12-22 11:42:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:42:18,097 INFO L93 Difference]: Finished difference Result 292 states and 326 transitions. [2020-12-22 11:42:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:42:18,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 11:42:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:42:18,100 INFO L225 Difference]: With dead ends: 292 [2020-12-22 11:42:18,100 INFO L226 Difference]: Without dead ends: 164 [2020-12-22 11:42:18,103 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 11:42:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-12-22 11:42:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 152. [2020-12-22 11:42:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 11:42:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2020-12-22 11:42:18,113 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 70 [2020-12-22 11:42:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:42:18,114 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2020-12-22 11:42:18,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:42:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2020-12-22 11:42:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 11:42:18,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:42:18,115 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] [2020-12-22 11:42:18,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 11:42:18,115 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:42:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:42:18,116 INFO L82 PathProgramCache]: Analyzing trace with hash 484257116, now seen corresponding path program 1 times [2020-12-22 11:42:18,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:42:18,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202869554] [2020-12-22 11:42:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:42:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:25,104 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-12-22 11:42:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:42:25,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202869554] [2020-12-22 11:42:25,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655978775] [2020-12-22 11:42:25,422 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 11:42:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:42:26,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2910 conjuncts, 74 conjunts are in the unsatisfiable core [2020-12-22 11:42:26,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:42:27,106 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 11:42:27,108 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:27,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:42:27,126 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:42:27,126 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-12-22 11:42:27,798 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-22 11:42:27,800 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2020-12-22 11:42:27,803 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:27,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:42:27,822 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:42:27,822 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:21 [2020-12-22 11:42:28,064 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,102 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,129 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,133 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,157 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,209 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,236 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,248 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,266 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,290 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,302 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,311 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,320 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,335 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,373 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,401 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,411 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,429 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,438 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,455 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,475 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,484 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,512 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,521 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,535 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,543 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,552 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,561 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,570 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,580 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,588 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 11:42:28,600 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,608 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,617 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 11:42:28,627 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,634 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,642 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,652 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 11:42:28,666 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,677 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,684 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:28,692 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,701 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 11:42:28,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 11:42:28,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:28,790 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2020-12-22 11:42:28,796 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:28,826 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2020-12-22 11:42:28,828 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:28,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:28,857 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2020-12-22 11:42:28,859 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:28,883 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2020-12-22 11:42:28,886 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:29,508 WARN L197 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-22 11:42:29,510 INFO L625 ElimStorePlain]: treesize reduction 24, result has 88.8 percent of original size [2020-12-22 11:42:29,591 INFO L547 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 1 dim-2 vars, End of recursive call: 16 dim-0 vars, and 4 xjuncts. [2020-12-22 11:42:29,592 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:231, output treesize:331 [2020-12-22 11:42:32,185 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2020-12-22 11:42:32,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:42:32,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:32,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:32,583 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 57 [2020-12-22 11:42:32,586 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:32,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:32,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:42:32,610 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2020-12-22 11:42:32,612 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:42:32,754 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 11:42:32,755 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:42:32,774 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 2 xjuncts. [2020-12-22 11:42:32,775 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:184, output treesize:176 [2020-12-22 11:42:33,112 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-22 11:42:33,507 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-22 11:42:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:42:33,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 11:42:33,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2020-12-22 11:42:33,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528317801] [2020-12-22 11:42:33,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 11:42:33,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:42:33,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 11:42:33,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=674, Unknown=1, NotChecked=0, Total=756 [2020-12-22 11:42:33,560 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand 28 states. [2020-12-22 11:42:51,175 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 11:42:51,522 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-22 11:42:51,809 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-22 11:42:52,360 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-22 11:42:52,751 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 11:42:57,165 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 57 [2020-12-22 11:43:15,889 WARN L197 SmtUtils]: Spent 16.60 s on a formula simplification. DAG size of input: 159 DAG size of output: 97 [2020-12-22 11:43:20,989 WARN L197 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 102 [2020-12-22 11:43:52,250 WARN L197 SmtUtils]: Spent 29.14 s on a formula simplification. DAG size of input: 176 DAG size of output: 104 [2020-12-22 11:44:09,703 WARN L197 SmtUtils]: Spent 13.16 s on a formula simplification. DAG size of input: 171 DAG size of output: 102 [2020-12-22 11:44:31,761 WARN L197 SmtUtils]: Spent 11.01 s on a formula simplification. DAG size of input: 149 DAG size of output: 92 [2020-12-22 11:44:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:44:32,239 INFO L93 Difference]: Finished difference Result 207 states and 227 transitions. [2020-12-22 11:44:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 11:44:32,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 72 [2020-12-22 11:44:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:44:32,246 INFO L225 Difference]: With dead ends: 207 [2020-12-22 11:44:32,246 INFO L226 Difference]: Without dead ends: 141 [2020-12-22 11:44:32,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 101.0s TimeCoverageRelationStatistics Valid=400, Invalid=1395, Unknown=11, NotChecked=0, Total=1806 [2020-12-22 11:44:32,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-22 11:44:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-12-22 11:44:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 11:44:32,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2020-12-22 11:44:32,263 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 72 [2020-12-22 11:44:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:44:32,264 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2020-12-22 11:44:32,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-22 11:44:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2020-12-22 11:44:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 11:44:32,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:44:32,265 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] [2020-12-22 11:44:32,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 11:44:32,478 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:32,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:32,480 INFO L82 PathProgramCache]: Analyzing trace with hash -268694696, now seen corresponding path program 1 times [2020-12-22 11:44:32,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:32,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331591428] [2020-12-22 11:44:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 11:44:32,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331591428] [2020-12-22 11:44:32,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:44:32,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:44:32,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541167413] [2020-12-22 11:44:32,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:44:32,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:44:32,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:44:32,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:44:32,973 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 5 states. [2020-12-22 11:44:35,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:44:35,785 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2020-12-22 11:44:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:44:35,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 11:44:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:44:35,792 INFO L225 Difference]: With dead ends: 214 [2020-12-22 11:44:35,793 INFO L226 Difference]: Without dead ends: 159 [2020-12-22 11:44:35,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:44:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-22 11:44:35,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 139. [2020-12-22 11:44:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-22 11:44:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2020-12-22 11:44:35,804 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 72 [2020-12-22 11:44:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:44:35,804 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2020-12-22 11:44:35,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:44:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2020-12-22 11:44:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 11:44:35,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:44:35,806 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] [2020-12-22 11:44:35,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 11:44:35,806 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:35,807 INFO L82 PathProgramCache]: Analyzing trace with hash -101538063, now seen corresponding path program 1 times [2020-12-22 11:44:35,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:35,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672813981] [2020-12-22 11:44:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 11:44:36,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672813981] [2020-12-22 11:44:36,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:44:36,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:44:36,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177985533] [2020-12-22 11:44:36,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:44:36,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:44:36,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:44:36,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:44:36,396 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 8 states. [2020-12-22 11:44:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:44:37,706 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-12-22 11:44:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 11:44:37,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-12-22 11:44:37,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:44:37,711 INFO L225 Difference]: With dead ends: 179 [2020-12-22 11:44:37,711 INFO L226 Difference]: Without dead ends: 175 [2020-12-22 11:44:37,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-12-22 11:44:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-22 11:44:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2020-12-22 11:44:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-22 11:44:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2020-12-22 11:44:37,723 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 74 [2020-12-22 11:44:37,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:44:37,723 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2020-12-22 11:44:37,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:44:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2020-12-22 11:44:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 11:44:37,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:44:37,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:44:37,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 11:44:37,725 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:37,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1301204179, now seen corresponding path program 1 times [2020-12-22 11:44:37,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:37,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564420009] [2020-12-22 11:44:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:44,148 WARN L197 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-12-22 11:44:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:44:44,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564420009] [2020-12-22 11:44:44,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52557535] [2020-12-22 11:44:44,781 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 11:44:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:46,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 11:44:46,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:44:46,659 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 11:44:46,662 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:44:46,695 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:44:46,698 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:44:46,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-22 11:44:47,170 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-22 11:44:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 11:44:48,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 11:44:48,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2020-12-22 11:44:48,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102327679] [2020-12-22 11:44:48,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 11:44:48,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:44:48,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 11:44:48,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-12-22 11:44:48,148 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 10 states. [2020-12-22 11:44:55,042 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-22 11:44:55,282 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-12-22 11:44:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:44:55,577 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2020-12-22 11:44:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:44:55,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-12-22 11:44:55,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:44:55,583 INFO L225 Difference]: With dead ends: 163 [2020-12-22 11:44:55,583 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 11:44:55,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-12-22 11:44:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 11:44:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-12-22 11:44:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 11:44:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2020-12-22 11:44:55,593 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 90 [2020-12-22 11:44:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:44:55,594 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2020-12-22 11:44:55,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 11:44:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2020-12-22 11:44:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 11:44:55,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:44:55,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:44:55,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:44:55,799 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash -131806003, now seen corresponding path program 1 times [2020-12-22 11:44:55,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:55,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126204634] [2020-12-22 11:44:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:44:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 11:44:56,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126204634] [2020-12-22 11:44:56,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:44:56,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:44:56,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556449247] [2020-12-22 11:44:56,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:44:56,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:44:56,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:44:56,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:44:56,436 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand 7 states. [2020-12-22 11:45:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:01,482 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2020-12-22 11:45:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:45:01,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-12-22 11:45:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:01,488 INFO L225 Difference]: With dead ends: 150 [2020-12-22 11:45:01,488 INFO L226 Difference]: Without dead ends: 130 [2020-12-22 11:45:01,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:45:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-22 11:45:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-12-22 11:45:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 11:45:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2020-12-22 11:45:01,499 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 90 [2020-12-22 11:45:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:01,500 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 135 transitions. [2020-12-22 11:45:01,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:45:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 135 transitions. [2020-12-22 11:45:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 11:45:01,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:01,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:01,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 11:45:01,502 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:01,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1803770330, now seen corresponding path program 1 times [2020-12-22 11:45:01,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:01,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222180459] [2020-12-22 11:45:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 11:45:02,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222180459] [2020-12-22 11:45:02,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:02,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:45:02,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246051080] [2020-12-22 11:45:02,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:45:02,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:02,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:45:02,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:45:02,139 INFO L87 Difference]: Start difference. First operand 130 states and 135 transitions. Second operand 6 states.