/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:24:41,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:24:41,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:24:42,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:24:42,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:24:42,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:24:42,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:24:42,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:24:42,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:24:42,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:24:42,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:24:42,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:24:42,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:24:42,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:24:42,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:24:42,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:24:42,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:24:42,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:24:42,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:24:42,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:24:42,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:24:42,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:24:42,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:24:42,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:24:42,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:24:42,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:24:42,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:24:42,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:24:42,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:24:42,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:24:42,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:24:42,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:24:42,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:24:42,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:24:42,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:24:42,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:24:42,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:24:42,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:24:42,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:24:42,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:24:42,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:24:42,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:24:42,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:24:42,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:24:42,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:24:42,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:24:42,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:24:42,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:24:42,080 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:24:42,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:24:42,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:24:42,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:24:42,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:24:42,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:24:42,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:24:42,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:24:42,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:24:42,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:24:42,084 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:24:42,085 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:24:42,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:24:42,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:24:42,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:24:42,300 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:24:42,300 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:24:42,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c [2022-01-11 02:24:42,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b995705a/e1aad88a1da84b3aa73cf9131e567f1d/FLAG65c0d0c2d [2022-01-11 02:24:42,719 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:24:42,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c [2022-01-11 02:24:42,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b995705a/e1aad88a1da84b3aa73cf9131e567f1d/FLAG65c0d0c2d [2022-01-11 02:24:42,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b995705a/e1aad88a1da84b3aa73cf9131e567f1d [2022-01-11 02:24:42,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:24:42,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:24:42,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:24:42,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:24:42,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:24:42,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:42,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65569432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42, skipping insertion in model container [2022-01-11 02:24:42,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:42,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:24:42,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:24:42,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c[489,502] [2022-01-11 02:24:42,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:24:42,959 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:24:42,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c[489,502] [2022-01-11 02:24:42,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:24:42,994 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:24:42,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42 WrapperNode [2022-01-11 02:24:42,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:24:42,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:24:42,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:24:42,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:24:43,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,028 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 98 [2022-01-11 02:24:43,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:24:43,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:24:43,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:24:43,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:24:43,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:24:43,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:24:43,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:24:43,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:24:43,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (1/1) ... [2022-01-11 02:24:43,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:24:43,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:24:43,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:24:43,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:24:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:24:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:24:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:24:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:24:43,223 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:24:43,224 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:24:44,484 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:24:44,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:24:44,488 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 02:24:44,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:24:44 BoogieIcfgContainer [2022-01-11 02:24:44,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:24:44,490 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:24:44,490 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:24:44,504 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:24:44,506 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:24:44" (1/1) ... [2022-01-11 02:24:44,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:24:44 BasicIcfg [2022-01-11 02:24:44,604 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:24:44,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:24:44,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:24:44,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:24:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:24:42" (1/4) ... [2022-01-11 02:24:44,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f3d38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:24:44, skipping insertion in model container [2022-01-11 02:24:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:24:42" (2/4) ... [2022-01-11 02:24:44,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f3d38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:24:44, skipping insertion in model container [2022-01-11 02:24:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:24:44" (3/4) ... [2022-01-11 02:24:44,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f3d38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:24:44, skipping insertion in model container [2022-01-11 02:24:44,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:24:44" (4/4) ... [2022-01-11 02:24:44,608 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound5.cTransformedIcfg [2022-01-11 02:24:44,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:24:44,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-11 02:24:44,641 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:24:44,646 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:24:44,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-11 02:24:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.588235294117647) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:44,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:24:44,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:44,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:44,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2028738347, now seen corresponding path program 1 times [2022-01-11 02:24:44,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:44,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841704826] [2022-01-11 02:24:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:44,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:24:44,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:24:44,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841704826] [2022-01-11 02:24:44,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841704826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:24:44,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:24:44,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:24:44,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642163543] [2022-01-11 02:24:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:24:44,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:24:44,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:24:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:24:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:24:44,822 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.588235294117647) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:24:44,834 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2022-01-11 02:24:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:24:44,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-11 02:24:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:24:44,840 INFO L225 Difference]: With dead ends: 81 [2022-01-11 02:24:44,840 INFO L226 Difference]: Without dead ends: 38 [2022-01-11 02:24:44,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:24:44,845 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:24:44,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:24:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-11 02:24:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-11 02:24:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-01-11 02:24:44,868 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 10 [2022-01-11 02:24:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:24:44,868 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-01-11 02:24:44,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-01-11 02:24:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:24:44,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:44,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:44,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:24:44,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash -523386836, now seen corresponding path program 1 times [2022-01-11 02:24:44,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:44,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948879017] [2022-01-11 02:24:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:44,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:44,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:24:44,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309778066] [2022-01-11 02:24:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:44,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:44,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:24:44,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:24:44,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:24:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:45,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:24:45,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:24:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:24:45,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:24:45,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:24:45,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948879017] [2022-01-11 02:24:45,190 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:24:45,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309778066] [2022-01-11 02:24:45,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309778066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:24:45,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:24:45,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:24:45,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938363217] [2022-01-11 02:24:45,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:24:45,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:24:45,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:24:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:24:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:24:45,196 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:24:45,338 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-01-11 02:24:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:24:45,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-11 02:24:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:24:45,339 INFO L225 Difference]: With dead ends: 73 [2022-01-11 02:24:45,339 INFO L226 Difference]: Without dead ends: 69 [2022-01-11 02:24:45,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:24:45,340 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:24:45,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 81 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:24:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-11 02:24:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2022-01-11 02:24:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-01-11 02:24:45,349 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 10 [2022-01-11 02:24:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:24:45,349 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-01-11 02:24:45,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-01-11 02:24:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:24:45,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:45,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:45,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 02:24:45,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:45,557 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash 954842594, now seen corresponding path program 1 times [2022-01-11 02:24:45,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:45,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698666748] [2022-01-11 02:24:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:45,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:24:45,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:24:45,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698666748] [2022-01-11 02:24:45,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698666748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:24:45,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:24:45,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:24:45,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319885195] [2022-01-11 02:24:45,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:24:45,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:24:45,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:24:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:24:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:24:45,701 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:45,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:24:45,737 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-01-11 02:24:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:24:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 02:24:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:24:45,740 INFO L225 Difference]: With dead ends: 70 [2022-01-11 02:24:45,740 INFO L226 Difference]: Without dead ends: 56 [2022-01-11 02:24:45,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:24:45,741 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:24:45,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:24:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-11 02:24:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-11 02:24:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-01-11 02:24:45,746 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 11 [2022-01-11 02:24:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:24:45,747 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-01-11 02:24:45,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-01-11 02:24:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 02:24:45,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:45,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:45,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:24:45,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash -463539342, now seen corresponding path program 1 times [2022-01-11 02:24:45,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:45,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237179222] [2022-01-11 02:24:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:45,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:45,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:24:45,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278824574] [2022-01-11 02:24:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:45,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:45,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:24:45,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:24:45,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:24:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:45,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 02:24:45,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:24:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:24:46,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:24:46,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:24:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237179222] [2022-01-11 02:24:46,295 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:24:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278824574] [2022-01-11 02:24:46,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278824574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:24:46,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:24:46,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 02:24:46,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042929232] [2022-01-11 02:24:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:24:46,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:24:46,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:24:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:24:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:24:46,302 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:24:46,661 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2022-01-11 02:24:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:24:46,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-11 02:24:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:24:46,662 INFO L225 Difference]: With dead ends: 68 [2022-01-11 02:24:46,662 INFO L226 Difference]: Without dead ends: 66 [2022-01-11 02:24:46,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:24:46,663 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 134 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:24:46,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 66 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:24:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-11 02:24:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2022-01-11 02:24:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-01-11 02:24:46,671 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 12 [2022-01-11 02:24:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:24:46,671 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-01-11 02:24:46,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-01-11 02:24:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:24:46,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:46,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:46,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:24:46,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-11 02:24:46,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:46,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1215327864, now seen corresponding path program 1 times [2022-01-11 02:24:46,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:46,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600408401] [2022-01-11 02:24:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:46,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:46,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:24:46,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087819696] [2022-01-11 02:24:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:46,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:24:46,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:24:46,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:24:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:47,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 02:24:47,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:24:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:24:47,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:24:47,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:24:47,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600408401] [2022-01-11 02:24:47,345 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:24:47,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087819696] [2022-01-11 02:24:47,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087819696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:24:47,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:24:47,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 02:24:47,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465924624] [2022-01-11 02:24:47,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:24:47,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:24:47,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:24:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:24:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:24:47,347 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:24:47,675 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2022-01-11 02:24:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:24:47,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-11 02:24:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:24:47,678 INFO L225 Difference]: With dead ends: 102 [2022-01-11 02:24:47,678 INFO L226 Difference]: Without dead ends: 94 [2022-01-11 02:24:47,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:24:47,678 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 142 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:24:47,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 65 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:24:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-11 02:24:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2022-01-11 02:24:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 83 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2022-01-11 02:24:47,688 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 14 [2022-01-11 02:24:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:24:47,688 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2022-01-11 02:24:47,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2022-01-11 02:24:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 02:24:47,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:47,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:47,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 02:24:47,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:47,905 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1488755590, now seen corresponding path program 1 times [2022-01-11 02:24:47,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:47,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369324179] [2022-01-11 02:24:47,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:47,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:47,917 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:24:47,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375965630] [2022-01-11 02:24:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:47,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:24:47,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:24:47,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:24:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:47,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-11 02:24:47,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:24:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:24:48,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:24:48,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:24:48,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369324179] [2022-01-11 02:24:48,016 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:24:48,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375965630] [2022-01-11 02:24:48,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375965630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:24:48,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:24:48,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:24:48,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408304552] [2022-01-11 02:24:48,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:24:48,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:24:48,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:24:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:24:48,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:24:48,019 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:24:48,167 INFO L93 Difference]: Finished difference Result 112 states and 133 transitions. [2022-01-11 02:24:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:24:48,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-11 02:24:48,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:24:48,168 INFO L225 Difference]: With dead ends: 112 [2022-01-11 02:24:48,168 INFO L226 Difference]: Without dead ends: 110 [2022-01-11 02:24:48,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:24:48,169 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:24:48,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 93 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:24:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-11 02:24:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2022-01-11 02:24:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.2891566265060241) internal successors, (107), 89 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2022-01-11 02:24:48,177 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 18 [2022-01-11 02:24:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:24:48,178 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2022-01-11 02:24:48,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2022-01-11 02:24:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:24:48,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:48,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:48,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 02:24:48,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:48,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -469976065, now seen corresponding path program 1 times [2022-01-11 02:24:48,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:48,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827004330] [2022-01-11 02:24:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:48,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:48,402 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:24:48,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322872010] [2022-01-11 02:24:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:48,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:48,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:24:48,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:24:48,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:24:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:48,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:24:48,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:24:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:24:48,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:24:48,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:24:48,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827004330] [2022-01-11 02:24:48,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:24:48,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322872010] [2022-01-11 02:24:48,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322872010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:24:48,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:24:48,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 02:24:48,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077129331] [2022-01-11 02:24:48,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:24:48,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:24:48,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:24:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:24:48,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:24:48,654 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:50,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:24:52,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:24:54,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:24:54,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:24:54,835 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2022-01-11 02:24:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 02:24:54,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-11 02:24:54,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:24:54,836 INFO L225 Difference]: With dead ends: 135 [2022-01-11 02:24:54,836 INFO L226 Difference]: Without dead ends: 127 [2022-01-11 02:24:54,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:24:54,837 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 64 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:24:54,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 99 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 103 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-01-11 02:24:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-11 02:24:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2022-01-11 02:24:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 96 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2022-01-11 02:24:54,846 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 20 [2022-01-11 02:24:54,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:24:54,846 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2022-01-11 02:24:54,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:24:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2022-01-11 02:24:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:24:54,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:24:54,847 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:24:54,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 02:24:55,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:55,048 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:24:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:24:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash -404562011, now seen corresponding path program 1 times [2022-01-11 02:24:55,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:24:55,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900844612] [2022-01-11 02:24:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:55,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:24:55,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:24:55,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397224380] [2022-01-11 02:24:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:24:55,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:24:55,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:24:55,066 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:24:55,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:24:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:24:55,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 02:24:55,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:24:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:24:55,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:25:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:25:04,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:25:04,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900844612] [2022-01-11 02:25:04,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:25:04,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397224380] [2022-01-11 02:25:04,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397224380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:25:04,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:25:04,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2022-01-11 02:25:04,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000384404] [2022-01-11 02:25:04,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:25:04,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:25:04,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:25:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:25:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=15, Unknown=4, NotChecked=0, Total=30 [2022-01-11 02:25:04,556 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:25:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:25:06,626 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2022-01-11 02:25:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:25:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-11 02:25:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:25:06,627 INFO L225 Difference]: With dead ends: 103 [2022-01-11 02:25:06,627 INFO L226 Difference]: Without dead ends: 101 [2022-01-11 02:25:06,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=17, Invalid=20, Unknown=5, NotChecked=0, Total=42 [2022-01-11 02:25:06,628 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 35 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:25:06,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 108 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-01-11 02:25:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-11 02:25:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-01-11 02:25:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.2666666666666666) internal successors, (114), 96 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:25:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2022-01-11 02:25:06,637 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 20 [2022-01-11 02:25:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:25:06,638 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2022-01-11 02:25:06,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:25:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2022-01-11 02:25:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:25:06,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:25:06,638 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:25:06,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 02:25:06,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:25:06,864 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:25:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:25:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash 343444873, now seen corresponding path program 1 times [2022-01-11 02:25:06,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:25:06,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281482893] [2022-01-11 02:25:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:25:06,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:25:06,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:25:06,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245192029] [2022-01-11 02:25:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:25:06,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:25:06,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:25:06,880 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:25:06,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 02:25:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:25:06,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:25:06,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:25:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:25:07,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:25:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:25:07,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:25:07,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281482893] [2022-01-11 02:25:07,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:25:07,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245192029] [2022-01-11 02:25:07,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245192029] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:25:07,349 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:25:07,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-11 02:25:07,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142117165] [2022-01-11 02:25:07,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:25:07,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:25:07,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:25:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:25:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:25:07,350 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:25:07,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:25:07,591 INFO L93 Difference]: Finished difference Result 240 states and 280 transitions. [2022-01-11 02:25:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 02:25:07,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-11 02:25:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:25:07,592 INFO L225 Difference]: With dead ends: 240 [2022-01-11 02:25:07,592 INFO L226 Difference]: Without dead ends: 212 [2022-01-11 02:25:07,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-11 02:25:07,593 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 77 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:25:07,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 193 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:25:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-11 02:25:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 160. [2022-01-11 02:25:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 153 states have (on average 1.2745098039215685) internal successors, (195), 159 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:25:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 195 transitions. [2022-01-11 02:25:07,614 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 195 transitions. Word has length 21 [2022-01-11 02:25:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:25:07,615 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 195 transitions. [2022-01-11 02:25:07,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:25:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 195 transitions. [2022-01-11 02:25:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 02:25:07,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:25:07,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:25:07,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-11 02:25:07,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:25:07,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:25:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:25:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2057967787, now seen corresponding path program 1 times [2022-01-11 02:25:07,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:25:07,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745291690] [2022-01-11 02:25:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:25:07,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:25:07,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:25:07,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97833270] [2022-01-11 02:25:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:25:07,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:25:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:25:07,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:25:07,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 02:25:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:25:08,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-11 02:25:08,311 INFO L286 TraceCheckSpWp]: Computing forward predicates...