/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 06:54:00,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 06:54:00,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 06:54:00,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 06:54:00,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 06:54:00,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 06:54:00,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 06:54:00,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 06:54:00,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 06:54:00,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 06:54:00,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 06:54:00,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 06:54:00,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 06:54:00,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 06:54:00,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 06:54:00,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 06:54:00,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 06:54:00,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 06:54:00,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 06:54:00,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 06:54:00,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 06:54:00,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 06:54:00,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 06:54:00,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 06:54:00,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 06:54:00,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 06:54:00,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 06:54:00,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 06:54:00,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 06:54:00,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 06:54:00,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 06:54:00,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 06:54:00,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 06:54:00,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 06:54:00,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 06:54:00,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 06:54:00,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 06:54:00,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 06:54:00,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 06:54:00,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 06:54:00,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 06:54:00,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 06:54:00,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 06:54:00,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 06:54:00,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 06:54:00,882 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 06:54:00,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 06:54:00,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 06:54:00,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 06:54:00,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 06:54:00,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 06:54:00,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 06:54:00,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 06:54:00,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:54:00,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 06:54:00,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 06:54:00,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 06:54:00,884 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 06:54:00,884 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 06:54:01,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 06:54:01,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 06:54:01,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 06:54:01,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 06:54:01,180 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 06:54:01,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-05-01 06:54:01,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7cea690c/0842b0e65dc941f3a74b7dfb22c76b68/FLAG53496dada [2021-05-01 06:54:01,673 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 06:54:01,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-05-01 06:54:01,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7cea690c/0842b0e65dc941f3a74b7dfb22c76b68/FLAG53496dada [2021-05-01 06:54:01,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7cea690c/0842b0e65dc941f3a74b7dfb22c76b68 [2021-05-01 06:54:01,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 06:54:01,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 06:54:01,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 06:54:01,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 06:54:01,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 06:54:01,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:54:01" (1/1) ... [2021-05-01 06:54:01,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d064576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:01, skipping insertion in model container [2021-05-01 06:54:01,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:54:01" (1/1) ... [2021-05-01 06:54:01,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 06:54:01,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 06:54:01,877 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/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-05-01 06:54:01,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:54:01,936 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 06:54:01,949 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/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-05-01 06:54:01,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:54:02,047 INFO L208 MainTranslator]: Completed translation [2021-05-01 06:54:02,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02 WrapperNode [2021-05-01 06:54:02,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 06:54:02,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 06:54:02,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 06:54:02,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 06:54:02,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... [2021-05-01 06:54:02,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... [2021-05-01 06:54:02,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... [2021-05-01 06:54:02,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... [2021-05-01 06:54:02,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... [2021-05-01 06:54:02,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... [2021-05-01 06:54:02,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... [2021-05-01 06:54:02,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 06:54:02,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 06:54:02,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 06:54:02,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 06:54:02,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:54:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 06:54:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 06:54:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 06:54:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 06:54:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2021-05-01 06:54:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2021-05-01 06:54:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 06:54:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 06:54:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 06:54:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 06:54:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 06:54:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 06:54:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 06:54:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 06:54:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-05-01 06:54:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-05-01 06:54:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-05-01 06:54:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-05-01 06:54:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2021-05-01 06:54:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-05-01 06:54:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-05-01 06:54:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-05-01 06:54:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-01 06:54:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-05-01 06:54:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-05-01 06:54:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2021-05-01 06:54:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2021-05-01 06:54:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-05-01 06:54:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2021-05-01 06:54:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2021-05-01 06:54:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2021-05-01 06:54:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2021-05-01 06:54:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2021-05-01 06:54:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2021-05-01 06:54:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 06:54:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 06:54:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 06:54:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 06:54:02,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 06:54:02,613 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-01 06:54:02,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:54:02 BoogieIcfgContainer [2021-05-01 06:54:02,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 06:54:02,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 06:54:02,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 06:54:02,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 06:54:02,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 06:54:01" (1/3) ... [2021-05-01 06:54:02,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef37b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:54:02, skipping insertion in model container [2021-05-01 06:54:02,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:54:02" (2/3) ... [2021-05-01 06:54:02,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef37b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:54:02, skipping insertion in model container [2021-05-01 06:54:02,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:54:02" (3/3) ... [2021-05-01 06:54:02,620 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-05-01 06:54:02,625 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 06:54:02,628 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 06:54:02,641 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 06:54:02,663 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 06:54:02,663 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 06:54:02,663 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 06:54:02,663 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 06:54:02,663 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 06:54:02,664 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 06:54:02,664 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 06:54:02,664 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 06:54:02,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 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) [2021-05-01 06:54:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 06:54:02,686 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:02,687 INFO L519 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] [2021-05-01 06:54:02,687 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:02,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:02,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1687048304, now seen corresponding path program 1 times [2021-05-01 06:54:02,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:02,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638985073] [2021-05-01 06:54:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:02,744 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:54:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:02,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:02,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:02,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:02,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:02,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:54:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:02,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:02,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-01 06:54:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:02,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:02,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:54:02,890 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:54:02,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638985073] [2021-05-01 06:54:02,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1638985073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:54:02,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:54:02,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 06:54:02,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177628319] [2021-05-01 06:54:02,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 06:54:02,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:54:02,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 06:54:02,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:54:02,906 INFO L87 Difference]: Start difference. First operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-05-01 06:54:03,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:54:03,000 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2021-05-01 06:54:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 06:54:03,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 29 [2021-05-01 06:54:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:54:03,006 INFO L225 Difference]: With dead ends: 93 [2021-05-01 06:54:03,006 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 06:54:03,008 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:54:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 06:54:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-01 06:54:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) [2021-05-01 06:54:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-05-01 06:54:03,038 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2021-05-01 06:54:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:54:03,038 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-05-01 06:54:03,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-05-01 06:54:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-05-01 06:54:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 06:54:03,041 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:03,041 INFO L519 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] [2021-05-01 06:54:03,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 06:54:03,042 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:03,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1509330471, now seen corresponding path program 1 times [2021-05-01 06:54:03,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:03,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084388772] [2021-05-01 06:54:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:03,048 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:54:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:54:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-01 06:54:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:54:03,145 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:54:03,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084388772] [2021-05-01 06:54:03,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1084388772] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:54:03,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:54:03,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 06:54:03,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547790531] [2021-05-01 06:54:03,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 06:54:03,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:54:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 06:54:03,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 06:54:03,147 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-05-01 06:54:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:54:03,243 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2021-05-01 06:54:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 06:54:03,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 33 [2021-05-01 06:54:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:54:03,245 INFO L225 Difference]: With dead ends: 78 [2021-05-01 06:54:03,245 INFO L226 Difference]: Without dead ends: 44 [2021-05-01 06:54:03,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 06:54:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-01 06:54:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-01 06:54:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 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) [2021-05-01 06:54:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-05-01 06:54:03,253 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2021-05-01 06:54:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:54:03,253 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-05-01 06:54:03,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-05-01 06:54:03,254 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-05-01 06:54:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 06:54:03,254 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:03,254 INFO L519 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] [2021-05-01 06:54:03,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 06:54:03,255 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:03,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1932032297, now seen corresponding path program 1 times [2021-05-01 06:54:03,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:03,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353823845] [2021-05-01 06:54:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:03,258 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:54:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:54:03,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:54:03,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-05-01 06:54:03,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:54:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-01 06:54:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:54:03,355 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:54:03,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353823845] [2021-05-01 06:54:03,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [353823845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:54:03,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:54:03,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 06:54:03,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912061653] [2021-05-01 06:54:03,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 06:54:03,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:54:03,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 06:54:03,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:54:03,357 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-05-01 06:54:03,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:54:03,542 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2021-05-01 06:54:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 06:54:03,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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 33 [2021-05-01 06:54:03,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:54:03,545 INFO L225 Difference]: With dead ends: 106 [2021-05-01 06:54:03,546 INFO L226 Difference]: Without dead ends: 71 [2021-05-01 06:54:03,547 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:54:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-01 06:54:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2021-05-01 06:54:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 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) [2021-05-01 06:54:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2021-05-01 06:54:03,576 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 33 [2021-05-01 06:54:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:54:03,576 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2021-05-01 06:54:03,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-05-01 06:54:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2021-05-01 06:54:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 06:54:03,577 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:03,577 INFO L519 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] [2021-05-01 06:54:03,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 06:54:03,577 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1403704983, now seen corresponding path program 1 times [2021-05-01 06:54:03,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:03,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753355412] [2021-05-01 06:54:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:03,580 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:54:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:54:03,651 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-05-01 06:54:03,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:54:03,658 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-05-01 06:54:03,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:54:03,675 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-05-01 06:54:03,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 06:54:03,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:54:03,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:54:03,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:54:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-01 06:54:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:03,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:03,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:54:03,726 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:54:03,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753355412] [2021-05-01 06:54:03,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [753355412] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:54:03,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:54:03,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:54:03,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519786602] [2021-05-01 06:54:03,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:54:03,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:54:03,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:54:03,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:54:03,728 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-01 06:54:03,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:54:03,996 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2021-05-01 06:54:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 06:54:03,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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 33 [2021-05-01 06:54:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:54:04,000 INFO L225 Difference]: With dead ends: 106 [2021-05-01 06:54:04,001 INFO L226 Difference]: Without dead ends: 104 [2021-05-01 06:54:04,001 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-05-01 06:54:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-01 06:54:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2021-05-01 06:54:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 73 states have internal predecessors, (95), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:54:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2021-05-01 06:54:04,025 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 33 [2021-05-01 06:54:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:54:04,025 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2021-05-01 06:54:04,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-01 06:54:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2021-05-01 06:54:04,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 06:54:04,031 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:04,031 INFO L519 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] [2021-05-01 06:54:04,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 06:54:04,031 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:04,032 INFO L82 PathProgramCache]: Analyzing trace with hash 590439723, now seen corresponding path program 1 times [2021-05-01 06:54:04,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:04,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581504421] [2021-05-01 06:54:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:04,035 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:54:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:54:04,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:54:04,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:54:04,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:54:04,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:54:04,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:54:04,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:54:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-01 06:54:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:54:04,143 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:54:04,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581504421] [2021-05-01 06:54:04,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [581504421] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:54:04,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:54:04,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 06:54:04,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573671592] [2021-05-01 06:54:04,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 06:54:04,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:54:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 06:54:04,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:54:04,145 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-01 06:54:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:54:04,405 INFO L93 Difference]: Finished difference Result 195 states and 257 transitions. [2021-05-01 06:54:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 06:54:04,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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 33 [2021-05-01 06:54:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:54:04,410 INFO L225 Difference]: With dead ends: 195 [2021-05-01 06:54:04,410 INFO L226 Difference]: Without dead ends: 127 [2021-05-01 06:54:04,410 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:54:04,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-01 06:54:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2021-05-01 06:54:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:54:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2021-05-01 06:54:04,419 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 33 [2021-05-01 06:54:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:54:04,419 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2021-05-01 06:54:04,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-01 06:54:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2021-05-01 06:54:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-01 06:54:04,420 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:04,420 INFO L519 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] [2021-05-01 06:54:04,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 06:54:04,420 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:04,421 INFO L82 PathProgramCache]: Analyzing trace with hash -532744798, now seen corresponding path program 1 times [2021-05-01 06:54:04,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:04,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786041376] [2021-05-01 06:54:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:04,423 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:54:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:54:04,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:54:04,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:54:04,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-05-01 06:54:04,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:54:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-01 06:54:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:54:04,476 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:54:04,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786041376] [2021-05-01 06:54:04,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1786041376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:54:04,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:54:04,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 06:54:04,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490297607] [2021-05-01 06:54:04,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 06:54:04,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:54:04,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 06:54:04,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:54:04,478 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-05-01 06:54:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:54:04,646 INFO L93 Difference]: Finished difference Result 180 states and 227 transitions. [2021-05-01 06:54:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 06:54:04,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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 35 [2021-05-01 06:54:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:54:04,647 INFO L225 Difference]: With dead ends: 180 [2021-05-01 06:54:04,648 INFO L226 Difference]: Without dead ends: 116 [2021-05-01 06:54:04,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:54:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-01 06:54:04,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2021-05-01 06:54:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 75 states have internal predecessors, (92), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:54:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2021-05-01 06:54:04,656 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 35 [2021-05-01 06:54:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:54:04,656 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2021-05-01 06:54:04,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-05-01 06:54:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2021-05-01 06:54:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-01 06:54:04,657 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:04,657 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:54:04,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 06:54:04,657 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1949287377, now seen corresponding path program 1 times [2021-05-01 06:54:04,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:04,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295229186] [2021-05-01 06:54:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:04,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:54:04,686 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= (select (select |v_#memory_int_18| v_parse_expression_list_~str.base_14) (+ v_parse_expression_list_~str.offset_14 v_parse_expression_list_~i~0_8 1)) 0)) InVars {#memory_int=|v_#memory_int_18|, parse_expression_list_~str.base=v_parse_expression_list_~str.base_14, parse_expression_list_~i~0=v_parse_expression_list_~i~0_8, parse_expression_list_~str.offset=v_parse_expression_list_~str.offset_14} OutVars{#memory_int=|v_#memory_int_18|, parse_expression_list_~str.base=v_parse_expression_list_~str.base_14, parse_expression_list_~i~0=v_parse_expression_list_~i~0_8, parse_expression_list_~str.offset=v_parse_expression_list_~str.offset_14} AuxVars[] AssignedVars[] [2021-05-01 06:54:04,695 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 89.1 percent of original size [2021-05-01 06:54:04,700 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,708 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,712 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,714 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,717 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,718 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:54:04,718 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:04,723 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,724 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,725 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,728 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,730 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,733 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,734 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:54:04,734 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:04,737 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,740 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,742 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,744 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,745 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:04,748 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,751 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,754 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,756 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,759 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,761 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,763 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,765 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,767 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,772 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,774 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,780 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 89.1 percent of original size 90 [2021-05-01 06:54:04,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:54:04,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:04,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-05-01 06:54:04,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:54:04,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:04,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-05-01 06:54:04,858 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:54:04,878 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.0 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,880 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.1 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,880 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.2 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,880 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.3 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,881 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.4 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,883 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.5 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,902 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.6 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,902 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.7 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,903 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.8 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,903 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.9 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,903 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.10 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,904 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.11 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-01 06:54:04,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:54:04,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:54:04,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:54:04,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:54:04,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 06:54:04,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:54:04,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:54:04,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:54:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-01 06:54:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:54:04,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:54:04,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:54:04,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:54:04,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:04,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:04,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-05-01 06:54:05,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 384 [2021-05-01 06:54:05,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 06:54:05,044 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-05-01 06:54:05,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:54:05,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:54:05,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 06:54:05,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 06:54:05,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:54:05,119 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:54:05,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295229186] [2021-05-01 06:54:05,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [295229186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:54:05,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:54:05,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 06:54:05,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714532665] [2021-05-01 06:54:05,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 06:54:05,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:54:05,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 06:54:05,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:54:05,121 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 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) [2021-05-01 06:54:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:54:05,464 INFO L93 Difference]: Finished difference Result 163 states and 204 transitions. [2021-05-01 06:54:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 06:54:05,465 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 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 38 [2021-05-01 06:54:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:54:05,467 INFO L225 Difference]: With dead ends: 163 [2021-05-01 06:54:05,467 INFO L226 Difference]: Without dead ends: 119 [2021-05-01 06:54:05,468 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 219.3ms TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-05-01 06:54:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-01 06:54:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2021-05-01 06:54:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 87 states have internal predecessors, (109), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 06:54:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2021-05-01 06:54:05,483 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 38 [2021-05-01 06:54:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:54:05,485 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2021-05-01 06:54:05,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 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) [2021-05-01 06:54:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2021-05-01 06:54:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-01 06:54:05,487 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:54:05,487 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:54:05,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 06:54:05,488 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:54:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:54:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1669063770, now seen corresponding path program 1 times [2021-05-01 06:54:05,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:54:05,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272532288] [2021-05-01 06:54:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:54:05,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:54:05,499 INFO L181 rdanLoopAcceleration]: Guard: Formula: (not (= (select (select |v_#memory_int_19| v_parse_expression_list_~str.base_15) (+ v_parse_expression_list_~i~0_12 v_parse_expression_list_~str.offset_15 1)) 0)) InVars {#memory_int=|v_#memory_int_19|, parse_expression_list_~str.base=v_parse_expression_list_~str.base_15, parse_expression_list_~i~0=v_parse_expression_list_~i~0_12, parse_expression_list_~str.offset=v_parse_expression_list_~str.offset_15} OutVars{#memory_int=|v_#memory_int_19|, parse_expression_list_~str.base=v_parse_expression_list_~str.base_15, parse_expression_list_~i~0=v_parse_expression_list_~i~0_12, parse_expression_list_~str.offset=v_parse_expression_list_~str.offset_15} AuxVars[] AssignedVars[] [2021-05-01 06:54:05,504 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 89.1 percent of original size [2021-05-01 06:54:05,507 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,508 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,517 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,519 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,521 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:54:05,521 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:05,522 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,525 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,528 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,530 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,535 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,536 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 06:54:05,536 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:05,541 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,544 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,551 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,554 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,558 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,561 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:05,565 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,569 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,574 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,576 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,578 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,581 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,583 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,585 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,587 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,589 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,591 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,593 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,594 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 89.1 percent of original size 90 [2021-05-01 06:54:05,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:54:05,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:05,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-05-01 06:54:05,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:54:05,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:54:05,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 06:54:05,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 379 [2021-05-01 06:54:05,654 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:54:05,663 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.0 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-01 06:54:05,663 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.1 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-01 06:54:05,665 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.2 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-01 06:54:05,665 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.3 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-01 06:54:05,665 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.4 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-01 06:54:05,666 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.5 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-01 06:54:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2021-05-01 06:54:05,689 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 06:54:05,689 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 06:54:05,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 06:54:05,710 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 06:54:05,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 06:54:05 BoogieIcfgContainer [2021-05-01 06:54:05,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 06:54:05,714 INFO L168 Benchmark]: Toolchain (without parser) took 3993.63 ms. Allocated memory was 206.6 MB in the beginning and 289.4 MB in the end (delta: 82.8 MB). Free memory was 172.0 MB in the beginning and 141.5 MB in the end (delta: 30.6 MB). Peak memory consumption was 114.8 MB. Max. memory is 8.0 GB. [2021-05-01 06:54:05,714 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 189.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 06:54:05,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.83 ms. Allocated memory is still 206.6 MB. Free memory was 171.8 MB in the beginning and 189.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB. [2021-05-01 06:54:05,716 INFO L168 Benchmark]: Boogie Preprocessor took 49.67 ms. Allocated memory is still 206.6 MB. Free memory was 189.3 MB in the beginning and 187.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 06:54:05,716 INFO L168 Benchmark]: RCFGBuilder took 515.23 ms. Allocated memory is still 206.6 MB. Free memory was 187.2 MB in the beginning and 158.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-05-01 06:54:05,721 INFO L168 Benchmark]: TraceAbstraction took 3095.26 ms. Allocated memory was 206.6 MB in the beginning and 289.4 MB in the end (delta: 82.8 MB). Free memory was 158.3 MB in the beginning and 141.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 100.7 MB. Max. memory is 8.0 GB. [2021-05-01 06:54:05,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 189.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.83 ms. Allocated memory is still 206.6 MB. Free memory was 171.8 MB in the beginning and 189.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.67 ms. Allocated memory is still 206.6 MB. Free memory was 189.3 MB in the beginning and 187.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.23 ms. Allocated memory is still 206.6 MB. Free memory was 187.2 MB in the beginning and 158.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3095.26 ms. Allocated memory was 206.6 MB in the beginning and 289.4 MB in the end (delta: 82.8 MB). Free memory was 158.3 MB in the beginning and 141.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 100.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L87] CALL parse_expression_list (A) [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND TRUE (0 < j) && (str[j] == '"') [L70] j-- [L71] COND TRUE start<=j [L72] CALL r_strncpy(str2, str+start, j-start+1) [L41] return strncpy(dest,src,n); [L72] RET r_strncpy(str2, str+start, j-start+1) [L73] CALL __VERIFIER_assert(j - start + 1 < 2) [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 3032.2ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 20.8ms, AutomataDifference: 1460.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 340 SDtfs, 378 SDslu, 874 SDs, 0 SdLazy, 1207 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 772.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 547.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=7, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 108.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 126 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...