/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 05:31:52,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 05:31:52,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 05:31:52,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 05:31:52,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 05:31:52,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 05:31:52,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 05:31:52,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 05:31:52,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 05:31:52,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 05:31:52,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 05:31:52,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 05:31:52,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 05:31:52,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 05:31:52,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 05:31:52,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 05:31:52,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 05:31:52,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 05:31:52,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 05:31:52,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 05:31:52,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 05:31:52,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 05:31:52,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 05:31:52,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 05:31:52,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 05:31:52,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 05:31:52,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 05:31:52,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 05:31:52,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 05:31:52,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 05:31:52,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 05:31:52,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 05:31:52,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 05:31:52,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 05:31:52,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 05:31:52,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 05:31:52,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 05:31:52,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 05:31:52,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 05:31:52,984 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 05:31:52,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 05:31:52,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 05:31:52,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 05:31:52,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 05:31:52,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 05:31:52,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 05:31:52,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 05:31:52,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:31:52,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 05:31:52,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 05:31:52,987 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 05:31:52,987 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 05:31:53,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 05:31:53,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 05:31:53,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 05:31:53,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 05:31:53,303 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 05:31:53,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-05-06 05:31:53,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1662d7341/46cc76ac2496421db9734a0d1bef52d2/FLAG63c25334f [2021-05-06 05:31:53,801 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 05:31:53,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-05-06 05:31:53,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1662d7341/46cc76ac2496421db9734a0d1bef52d2/FLAG63c25334f [2021-05-06 05:31:54,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1662d7341/46cc76ac2496421db9734a0d1bef52d2 [2021-05-06 05:31:54,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 05:31:54,199 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 05:31:54,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 05:31:54,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 05:31:54,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 05:31:54,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4388db88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54, skipping insertion in model container [2021-05-06 05:31:54,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 05:31:54,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 05:31:54,380 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-05-06 05:31:54,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:31:54,415 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 05:31:54,472 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-05-06 05:31:54,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:31:54,525 INFO L208 MainTranslator]: Completed translation [2021-05-06 05:31:54,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54 WrapperNode [2021-05-06 05:31:54,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 05:31:54,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 05:31:54,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 05:31:54,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 05:31:54,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (1/1) ... [2021-05-06 05:31:54,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 05:31:54,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 05:31:54,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 05:31:54,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 05:31:54,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (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 [2021-05-06 05:31:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 05:31:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 05:31:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 05:31:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 05:31:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2021-05-06 05:31:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2021-05-06 05:31:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 05:31:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 05:31:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 05:31:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 05:31:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 05:31:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 05:31:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 05:31:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-05-06 05:31:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 05:31:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-05-06 05:31:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-05-06 05:31:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-05-06 05:31:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-05-06 05:31:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2021-05-06 05:31:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2021-05-06 05:31:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-05-06 05:31:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2021-05-06 05:31:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2021-05-06 05:31:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2021-05-06 05:31:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2021-05-06 05:31:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2021-05-06 05:31:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 05:31:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 05:31:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 05:31:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 05:31:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 05:31:55,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 05:31:55,064 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-06 05:31:55,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:55 BoogieIcfgContainer [2021-05-06 05:31:55,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 05:31:55,067 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 05:31:55,067 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 05:31:55,067 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 05:31:55,070 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:55" (1/1) ... [2021-05-06 05:31:55,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:31:55 BasicIcfg [2021-05-06 05:31:55,094 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 05:31:55,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 05:31:55,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 05:31:55,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 05:31:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 05:31:54" (1/4) ... [2021-05-06 05:31:55,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ed2bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:31:55, skipping insertion in model container [2021-05-06 05:31:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:54" (2/4) ... [2021-05-06 05:31:55,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ed2bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:31:55, skipping insertion in model container [2021-05-06 05:31:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:55" (3/4) ... [2021-05-06 05:31:55,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ed2bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:31:55, skipping insertion in model container [2021-05-06 05:31:55,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:31:55" (4/4) ... [2021-05-06 05:31:55,101 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.iJordan [2021-05-06 05:31:55,105 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 05:31:55,109 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 05:31:55,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 05:31:55,139 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 05:31:55,139 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 05:31:55,139 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 05:31:55,139 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 05:31:55,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 05:31:55,140 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 05:31:55,140 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 05:31:55,140 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 05:31:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 05:31:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 05:31:55,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:55,159 INFO L523 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] [2021-05-06 05:31:55,160 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:55,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1913248372, now seen corresponding path program 1 times [2021-05-06 05:31:55,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:55,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709166244] [2021-05-06 05:31:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-05-06 05:31:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:55,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:55,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709166244] [2021-05-06 05:31:55,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709166244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:55,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:31:55,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 05:31:55,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609185861] [2021-05-06 05:31:55,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 05:31:55,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:55,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 05:31:55,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:31:55,457 INFO L87 Difference]: Start difference. First operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:55,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:55,596 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2021-05-06 05:31:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 05:31:55,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-05-06 05:31:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:55,604 INFO L225 Difference]: With dead ends: 55 [2021-05-06 05:31:55,604 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 05:31:55,606 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:31:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 05:31:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-06 05:31:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2021-05-06 05:31:55,639 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2021-05-06 05:31:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:55,639 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2021-05-06 05:31:55,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2021-05-06 05:31:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-06 05:31:55,642 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:55,642 INFO L523 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] [2021-05-06 05:31:55,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 05:31:55,643 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:55,645 INFO L82 PathProgramCache]: Analyzing trace with hash -123059233, now seen corresponding path program 1 times [2021-05-06 05:31:55,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:55,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687733586] [2021-05-06 05:31:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:55,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-05-06 05:31:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:55,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:55,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687733586] [2021-05-06 05:31:55,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687733586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:55,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:31:55,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 05:31:55,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131320569] [2021-05-06 05:31:55,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 05:31:55,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:55,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 05:31:55,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 05:31:55,771 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:55,891 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2021-05-06 05:31:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 05:31:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-05-06 05:31:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:55,893 INFO L225 Difference]: With dead ends: 49 [2021-05-06 05:31:55,893 INFO L226 Difference]: Without dead ends: 49 [2021-05-06 05:31:55,894 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 05:31:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-06 05:31:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-05-06 05:31:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-05-06 05:31:55,907 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2021-05-06 05:31:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:55,908 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-05-06 05:31:55,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-05-06 05:31:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-06 05:31:55,909 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:55,909 INFO L523 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] [2021-05-06 05:31:55,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 05:31:55,910 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:55,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash -62292927, now seen corresponding path program 1 times [2021-05-06 05:31:55,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:55,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939001787] [2021-05-06 05:31:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-06 05:31:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:56,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:56,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939001787] [2021-05-06 05:31:56,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939001787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:56,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757657427] [2021-05-06 05:31:56,013 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 [2021-05-06 05:31:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2021-05-06 05:31:56,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 05:31:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 05:31:56,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757657427] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:56,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-06 05:31:56,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-05-06 05:31:56,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406854525] [2021-05-06 05:31:56,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 05:31:56,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:56,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 05:31:56,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:31:56,286 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:56,296 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2021-05-06 05:31:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 05:31:56,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-05-06 05:31:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:56,298 INFO L225 Difference]: With dead ends: 49 [2021-05-06 05:31:56,298 INFO L226 Difference]: Without dead ends: 49 [2021-05-06 05:31:56,298 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:31:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-06 05:31:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-05-06 05:31:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2021-05-06 05:31:56,302 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2021-05-06 05:31:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:56,303 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2021-05-06 05:31:56,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-05-06 05:31:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-06 05:31:56,304 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:56,304 INFO L523 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] [2021-05-06 05:31:56,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 05:31:56,505 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2100349216, now seen corresponding path program 1 times [2021-05-06 05:31:56,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:56,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412877105] [2021-05-06 05:31:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-06 05:31:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:56,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:56,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412877105] [2021-05-06 05:31:56,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412877105] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:56,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791192010] [2021-05-06 05:31:56,577 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 [2021-05-06 05:31:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:56,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-06 05:31:56,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 05:31:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 05:31:56,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791192010] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:56,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-06 05:31:56,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-05-06 05:31:56,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292825544] [2021-05-06 05:31:56,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 05:31:56,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:56,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 05:31:56,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 05:31:56,829 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:56,935 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2021-05-06 05:31:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 05:31:56,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-05-06 05:31:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:56,939 INFO L225 Difference]: With dead ends: 73 [2021-05-06 05:31:56,939 INFO L226 Difference]: Without dead ends: 73 [2021-05-06 05:31:56,939 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-06 05:31:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-06 05:31:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2021-05-06 05:31:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2021-05-06 05:31:56,962 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 38 [2021-05-06 05:31:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:56,962 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2021-05-06 05:31:56,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2021-05-06 05:31:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-06 05:31:56,963 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:56,964 INFO L523 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] [2021-05-06 05:31:57,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 05:31:57,181 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2030297792, now seen corresponding path program 1 times [2021-05-06 05:31:57,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:57,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454258312] [2021-05-06 05:31:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-06 05:31:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:57,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:57,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454258312] [2021-05-06 05:31:57,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454258312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:57,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919294293] [2021-05-06 05:31:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 05:31:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:57,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-06 05:31:57,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 05:31:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:31:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:57,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919294293] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:31:57,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 05:31:57,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-06 05:31:57,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500305833] [2021-05-06 05:31:57,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 05:31:57,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:57,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 05:31:57,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:31:57,458 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 05:31:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:57,555 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-05-06 05:31:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 05:31:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-05-06 05:31:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:57,559 INFO L225 Difference]: With dead ends: 56 [2021-05-06 05:31:57,559 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 05:31:57,560 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:31:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 05:31:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-05-06 05:31:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2021-05-06 05:31:57,566 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 38 [2021-05-06 05:31:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:57,566 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2021-05-06 05:31:57,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 05:31:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2021-05-06 05:31:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-06 05:31:57,567 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:57,567 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:31:57,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 05:31:57,768 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash 297175714, now seen corresponding path program 2 times [2021-05-06 05:31:57,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:57,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911827422] [2021-05-06 05:31:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-06 05:31:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 05:31:57,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:57,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911827422] [2021-05-06 05:31:57,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911827422] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:57,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:31:57,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 05:31:57,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342046869] [2021-05-06 05:31:57,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 05:31:57,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 05:31:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-06 05:31:57,918 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:58,141 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2021-05-06 05:31:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 05:31:58,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2021-05-06 05:31:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:58,142 INFO L225 Difference]: With dead ends: 94 [2021-05-06 05:31:58,143 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 05:31:58,143 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-05-06 05:31:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 05:31:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 05:31:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 05:31:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 05:31:58,157 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-05-06 05:31:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:58,160 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 05:31:58,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 05:31:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 05:31:58,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 05:31:58,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-06 05:31:58,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:31:58 BasicIcfg [2021-05-06 05:31:58,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 05:31:58,166 INFO L168 Benchmark]: Toolchain (without parser) took 3967.57 ms. Allocated memory was 191.9 MB in the beginning and 242.2 MB in the end (delta: 50.3 MB). Free memory was 157.2 MB in the beginning and 222.2 MB in the end (delta: -65.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:31:58,166 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 191.9 MB. Free memory is still 174.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:31:58,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.52 ms. Allocated memory is still 191.9 MB. Free memory was 157.0 MB in the beginning and 173.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:58,166 INFO L168 Benchmark]: Boogie Preprocessor took 61.90 ms. Allocated memory is still 191.9 MB. Free memory was 173.0 MB in the beginning and 170.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:58,167 INFO L168 Benchmark]: RCFGBuilder took 476.67 ms. Allocated memory is still 191.9 MB. Free memory was 170.9 MB in the beginning and 142.1 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:58,167 INFO L168 Benchmark]: IcfgTransformer took 27.36 ms. Allocated memory is still 191.9 MB. Free memory was 142.1 MB in the beginning and 140.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:58,169 INFO L168 Benchmark]: TraceAbstraction took 3070.06 ms. Allocated memory was 191.9 MB in the beginning and 242.2 MB in the end (delta: 50.3 MB). Free memory was 139.5 MB in the beginning and 222.2 MB in the end (delta: -82.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:31:58,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 191.9 MB. Free memory is still 174.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 322.52 ms. Allocated memory is still 191.9 MB. Free memory was 157.0 MB in the beginning and 173.0 MB in the end (delta: -16.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.90 ms. Allocated memory is still 191.9 MB. Free memory was 173.0 MB in the beginning and 170.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 476.67 ms. Allocated memory is still 191.9 MB. Free memory was 170.9 MB in the beginning and 142.1 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * IcfgTransformer took 27.36 ms. Allocated memory is still 191.9 MB. Free memory was 142.1 MB in the beginning and 140.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3070.06 ms. Allocated memory was 191.9 MB in the beginning and 242.2 MB in the end (delta: 50.3 MB). Free memory was 139.5 MB in the beginning and 222.2 MB in the end (delta: -82.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3024.8ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 16.1ms, AutomataDifference: 739.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 312 SDtfs, 160 SDslu, 457 SDs, 0 SdLazy, 394 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 382.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 344.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 86.2ms SsaConstructionTime, 200.8ms SatisfiabilityAnalysisTime, 938.7ms InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 591 SizeOfPredicates, 2 NumberOfNonLiveVariables, 529 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 6/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...