/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/verifythis/lcp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 19:10:03,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 19:10:03,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 19:10:03,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 19:10:03,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 19:10:03,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 19:10:03,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 19:10:03,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 19:10:03,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 19:10:03,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 19:10:03,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 19:10:03,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 19:10:03,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 19:10:03,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 19:10:03,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 19:10:03,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 19:10:03,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 19:10:03,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 19:10:03,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 19:10:03,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 19:10:03,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 19:10:03,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 19:10:03,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 19:10:03,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 19:10:03,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 19:10:03,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 19:10:03,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 19:10:03,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 19:10:03,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 19:10:03,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 19:10:03,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 19:10:03,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 19:10:03,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 19:10:03,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 19:10:03,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 19:10:03,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 19:10:03,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 19:10:03,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 19:10:03,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 19:10:03,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 19:10:03,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 19:10:03,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 19:10:03,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 19:10:03,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 19:10:03,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 19:10:03,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 19:10:03,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 19:10:03,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 19:10:03,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 19:10:03,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 19:10:03,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 19:10:03,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 19:10:03,806 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 19:10:03,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 19:10:03,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 19:10:03,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 19:10:03,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 19:10:03,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 19:10:03,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 19:10:03,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 19:10:03,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:10:03,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 19:10:03,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 19:10:03,809 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 19:10:03,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 19:10:04,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 19:10:04,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 19:10:04,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 19:10:04,160 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 19:10:04,161 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 19:10:04,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/lcp.c [2021-05-02 19:10:04,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de9d6c5a/a7649a1633d744f1b52fc341775ea33e/FLAGbb15df14b [2021-05-02 19:10:04,832 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 19:10:04,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/lcp.c [2021-05-02 19:10:04,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de9d6c5a/a7649a1633d744f1b52fc341775ea33e/FLAGbb15df14b [2021-05-02 19:10:05,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6de9d6c5a/a7649a1633d744f1b52fc341775ea33e [2021-05-02 19:10:05,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 19:10:05,084 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 19:10:05,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 19:10:05,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 19:10:05,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 19:10:05,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b236af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05, skipping insertion in model container [2021-05-02 19:10:05,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 19:10:05,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 19:10:05,272 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/lcp.c[515,528] [2021-05-02 19:10:05,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:10:05,319 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 19:10:05,364 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/lcp.c[515,528] [2021-05-02 19:10:05,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:10:05,386 INFO L208 MainTranslator]: Completed translation [2021-05-02 19:10:05,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05 WrapperNode [2021-05-02 19:10:05,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 19:10:05,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 19:10:05,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 19:10:05,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 19:10:05,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:05,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 19:10:05,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 19:10:05,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 19:10:05,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 19:10:05,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (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 [2021-05-02 19:10:05,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 19:10:05,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 19:10:05,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 19:10:05,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 19:10:05,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 19:10:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure lcp [2021-05-02 19:10:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-05-02 19:10:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 19:10:05,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-05-02 19:10:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-05-02 19:10:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-05-02 19:10:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 19:10:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 19:10:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 19:10:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 19:10:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 19:10:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 19:10:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 19:10:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure lcp [2021-05-02 19:10:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 19:10:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-05-02 19:10:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 19:10:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-02 19:10:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-05-02 19:10:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 19:10:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 19:10:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 19:10:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 19:10:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 19:10:05,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 19:10:05,981 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 19:10:05,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:10:05 BoogieIcfgContainer [2021-05-02 19:10:05,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 19:10:05,983 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 19:10:05,983 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 19:10:05,983 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 19:10:05,987 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:10:05" (1/1) ... [2021-05-02 19:10:06,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:10:06 BasicIcfg [2021-05-02 19:10:06,009 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 19:10:06,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 19:10:06,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 19:10:06,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 19:10:06,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 07:10:05" (1/4) ... [2021-05-02 19:10:06,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b42b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:10:06, skipping insertion in model container [2021-05-02 19:10:06,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:10:05" (2/4) ... [2021-05-02 19:10:06,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b42b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:10:06, skipping insertion in model container [2021-05-02 19:10:06,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:10:05" (3/4) ... [2021-05-02 19:10:06,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b42b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:10:06, skipping insertion in model container [2021-05-02 19:10:06,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:10:06" (4/4) ... [2021-05-02 19:10:06,018 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.cJordan [2021-05-02 19:10:06,023 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 19:10:06,026 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 19:10:06,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 19:10:06,067 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 19:10:06,067 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 19:10:06,068 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 19:10:06,068 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 19:10:06,068 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 19:10:06,068 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 19:10:06,068 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 19:10:06,068 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 19:10:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 19:10:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 19:10:06,089 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:06,090 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:06,091 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:06,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1603802952, now seen corresponding path program 1 times [2021-05-02 19:10:06,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:06,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215675577] [2021-05-02 19:10:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:10:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:10:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 19:10:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:10:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 19:10:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 19:10:06,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:06,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215675577] [2021-05-02 19:10:06,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215675577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:10:06,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:10:06,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 19:10:06,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578131636] [2021-05-02 19:10:06,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 19:10:06,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:06,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 19:10:06,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 19:10:06,411 INFO L87 Difference]: Start difference. First operand has 49 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 19:10:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:06,578 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-05-02 19:10:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 19:10:06,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2021-05-02 19:10:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:06,585 INFO L225 Difference]: With dead ends: 49 [2021-05-02 19:10:06,585 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 19:10:06,587 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 19:10:06,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 19:10:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 19:10:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 19:10:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-05-02 19:10:06,616 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 41 [2021-05-02 19:10:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:06,616 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-05-02 19:10:06,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 19:10:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-05-02 19:10:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 19:10:06,618 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:06,619 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:06,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 19:10:06,619 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash -345645567, now seen corresponding path program 1 times [2021-05-02 19:10:06,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:06,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838832336] [2021-05-02 19:10:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:10:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:10:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 19:10:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:10:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-02 19:10:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 19:10:06,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:06,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838832336] [2021-05-02 19:10:06,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838832336] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:10:06,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:10:06,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 19:10:06,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714503148] [2021-05-02 19:10:06,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 19:10:06,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:06,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 19:10:06,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-05-02 19:10:06,860 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 19:10:07,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:07,241 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-05-02 19:10:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 19:10:07,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2021-05-02 19:10:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:07,243 INFO L225 Difference]: With dead ends: 45 [2021-05-02 19:10:07,243 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 19:10:07,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 231.9ms TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-05-02 19:10:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 19:10:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 19:10:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 19:10:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-05-02 19:10:07,250 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 43 [2021-05-02 19:10:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:07,251 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-05-02 19:10:07,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 19:10:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-05-02 19:10:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 19:10:07,262 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:07,263 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:07,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 19:10:07,263 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:07,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:07,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1342717920, now seen corresponding path program 1 times [2021-05-02 19:10:07,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:07,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771915558] [2021-05-02 19:10:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:07,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:10:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:07,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:10:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 19:10:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:10:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-02 19:10:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 19:10:07,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:07,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771915558] [2021-05-02 19:10:07,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771915558] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:10:07,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:10:07,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 19:10:07,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375683867] [2021-05-02 19:10:07,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 19:10:07,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:07,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 19:10:07,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-05-02 19:10:07,557 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 19:10:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:08,151 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-05-02 19:10:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 19:10:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2021-05-02 19:10:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:08,154 INFO L225 Difference]: With dead ends: 46 [2021-05-02 19:10:08,154 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 19:10:08,155 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 409.4ms TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-05-02 19:10:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 19:10:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-02 19:10:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 10 states have call successors, (10), 8 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 19:10:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-05-02 19:10:08,162 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 43 [2021-05-02 19:10:08,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:08,162 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-05-02 19:10:08,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-02 19:10:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-05-02 19:10:08,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 19:10:08,164 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:08,164 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:08,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 19:10:08,164 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:08,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1707305611, now seen corresponding path program 1 times [2021-05-02 19:10:08,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:08,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535976183] [2021-05-02 19:10:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:10:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:10:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 19:10:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:10:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-02 19:10:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 19:10:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 19:10:08,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:08,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535976183] [2021-05-02 19:10:08,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535976183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:10:08,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:10:08,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 19:10:08,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590828633] [2021-05-02 19:10:08,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 19:10:08,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:08,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 19:10:08,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-05-02 19:10:08,416 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 19:10:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:08,964 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-05-02 19:10:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 19:10:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2021-05-02 19:10:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:08,966 INFO L225 Difference]: With dead ends: 59 [2021-05-02 19:10:08,966 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 19:10:08,967 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 427.1ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-05-02 19:10:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 19:10:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-05-02 19:10:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 10 states have call successors, (10), 8 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 19:10:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 19:10:08,972 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 50 [2021-05-02 19:10:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:08,972 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 19:10:08,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 19:10:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 19:10:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 19:10:08,974 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:10:08,974 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:10:08,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 19:10:08,974 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:10:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:10:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash -573911401, now seen corresponding path program 1 times [2021-05-02 19:10:08,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:10:08,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231761634] [2021-05-02 19:10:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:10:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:10:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 19:10:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 19:10:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 19:10:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 19:10:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-02 19:10:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-02 19:10:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-02 19:10:09,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:10:09,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231761634] [2021-05-02 19:10:09,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231761634] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:09,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633570781] [2021-05-02 19:10:09,195 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 [2021-05-02 19:10:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:10:09,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 19:10:09,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:10:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:10:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-02 19:10:09,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633570781] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:10:09,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:10:09,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2021-05-02 19:10:09,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547669131] [2021-05-02 19:10:09,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 19:10:09,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:10:09,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 19:10:09,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-05-02 19:10:09,734 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 19:10:10,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:10:10,262 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-05-02 19:10:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 19:10:10,262 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2021-05-02 19:10:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:10:10,264 INFO L225 Difference]: With dead ends: 44 [2021-05-02 19:10:10,264 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 19:10:10,264 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 367.8ms TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-05-02 19:10:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 19:10:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 19:10:10,265 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) [2021-05-02 19:10:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 19:10:10,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-05-02 19:10:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:10:10,266 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 19:10:10,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 19:10:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 19:10:10,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 19:10:10,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:10:10,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:10:10 BasicIcfg [2021-05-02 19:10:10,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 19:10:10,485 INFO L168 Benchmark]: Toolchain (without parser) took 5400.91 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 138.4 MB in the beginning and 91.4 MB in the end (delta: 46.9 MB). Peak memory consumption was 83.3 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:10,485 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 173.0 MB. Free memory is still 155.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:10:10,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.58 ms. Allocated memory is still 173.0 MB. Free memory was 138.2 MB in the beginning and 155.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:10,485 INFO L168 Benchmark]: Boogie Preprocessor took 31.94 ms. Allocated memory is still 173.0 MB. Free memory was 155.3 MB in the beginning and 153.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:10,485 INFO L168 Benchmark]: RCFGBuilder took 561.37 ms. Allocated memory is still 173.0 MB. Free memory was 153.7 MB in the beginning and 132.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:10,486 INFO L168 Benchmark]: IcfgTransformer took 26.30 ms. Allocated memory is still 173.0 MB. Free memory was 132.8 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:10,486 INFO L168 Benchmark]: TraceAbstraction took 4473.56 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 130.7 MB in the beginning and 91.4 MB in the end (delta: 39.2 MB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. [2021-05-02 19:10:10,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 173.0 MB. Free memory is still 155.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.58 ms. Allocated memory is still 173.0 MB. Free memory was 138.2 MB in the beginning and 155.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.94 ms. Allocated memory is still 173.0 MB. Free memory was 155.3 MB in the beginning and 153.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 561.37 ms. Allocated memory is still 173.0 MB. Free memory was 153.7 MB in the beginning and 132.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * IcfgTransformer took 26.30 ms. Allocated memory is still 173.0 MB. Free memory was 132.8 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4473.56 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 130.7 MB in the beginning and 91.4 MB in the end (delta: 39.2 MB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 8 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4416.9ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 25.7ms, AutomataDifference: 2254.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 160 SDtfs, 306 SDslu, 263 SDs, 0 SdLazy, 1058 SolverSat, 176 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 878.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1508.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.9ms SsaConstructionTime, 189.7ms SatisfiabilityAnalysisTime, 1479.5ms InterpolantComputationTime, 283 NumberOfCodeBlocks, 283 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 277 ConstructedInterpolants, 0 QuantifiedInterpolants, 1091 SizeOfPredicates, 9 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 80/84 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...