/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/dijkstra-u_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:20:56,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:20:56,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:20:57,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:20:57,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:20:57,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:20:57,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:20:57,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:20:57,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:20:57,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:20:57,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:20:57,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:20:57,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:20:57,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:20:57,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:20:57,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:20:57,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:20:57,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:20:57,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:20:57,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:20:57,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:20:57,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:20:57,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:20:57,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:20:57,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:20:57,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:20:57,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:20:57,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:20:57,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:20:57,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:20:57,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:20:57,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:20:57,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:20:57,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:20:57,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:20:57,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:20:57,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:20:57,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:20:57,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:20:57,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:20:57,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:20:57,060 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 02:20:57,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:20:57,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:20:57,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:20:57,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:20:57,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:20:57,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:20:57,082 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:20:57,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:20:57,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:20:57,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:20:57,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:20:57,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:20:57,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:20:57,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:20:57,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:20:57,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:20:57,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:20:57,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:20:57,086 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:20:57,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:20:57,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:20:57,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:20:57,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:20:57,088 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:20:57,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:20:57,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:20:57,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:20:57,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:20:57,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:20:57,250 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:20:57,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound20.c [2022-01-11 02:20:57,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeef6c9dd/92729099a89e43398b180d075784b900/FLAGa895161d3 [2022-01-11 02:20:57,656 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:20:57,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_unwindbound20.c [2022-01-11 02:20:57,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeef6c9dd/92729099a89e43398b180d075784b900/FLAGa895161d3 [2022-01-11 02:20:57,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeef6c9dd/92729099a89e43398b180d075784b900 [2022-01-11 02:20:57,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:20:57,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:20:57,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:20:57,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:20:57,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:20:57,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb1a5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57, skipping insertion in model container [2022-01-11 02:20:57,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:20:57,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:20:57,799 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/dijkstra-u_unwindbound20.c[525,538] [2022-01-11 02:20:57,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:20:57,827 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:20:57,834 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/dijkstra-u_unwindbound20.c[525,538] [2022-01-11 02:20:57,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:20:57,852 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:20:57,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57 WrapperNode [2022-01-11 02:20:57,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:20:57,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:20:57,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:20:57,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:20:57,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,887 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 109 [2022-01-11 02:20:57,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:20:57,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:20:57,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:20:57,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:20:57,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:20:57,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:20:57,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:20:57,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:20:57,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (1/1) ... [2022-01-11 02:20:57,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:20:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:20:57,961 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 02:20:57,967 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 02:20:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:20:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:20:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:20:57,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:20:58,026 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:20:58,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:20:58,862 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:20:58,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:20:58,866 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:20:58,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:20:58 BoogieIcfgContainer [2022-01-11 02:20:58,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:20:58,868 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:20:58,868 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:20:58,869 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:20:58,871 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:20:58" (1/1) ... [2022-01-11 02:20:58,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:20:58 BasicIcfg [2022-01-11 02:20:58,923 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:20:58,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:20:58,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:20:58,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:20:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:20:57" (1/4) ... [2022-01-11 02:20:58,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfc9bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:20:58, skipping insertion in model container [2022-01-11 02:20:58,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:20:57" (2/4) ... [2022-01-11 02:20:58,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfc9bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:20:58, skipping insertion in model container [2022-01-11 02:20:58,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:20:58" (3/4) ... [2022-01-11 02:20:58,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfc9bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:20:58, skipping insertion in model container [2022-01-11 02:20:58,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:20:58" (4/4) ... [2022-01-11 02:20:58,928 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound20.cTransformedIcfg [2022-01-11 02:20:58,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:20:58,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-01-11 02:20:58,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:20:58,964 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 02:20:58,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-01-11 02:20:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 50 states have internal predecessors, (67), 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 02:20:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:20:58,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:20:58,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:20:58,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:20:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:20:58,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1572895235, now seen corresponding path program 1 times [2022-01-11 02:20:58,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:20:58,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299277491] [2022-01-11 02:20:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:20:58,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:20:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:20:59,099 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 02:20:59,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:20:59,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299277491] [2022-01-11 02:20:59,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299277491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:20:59,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:20:59,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:20:59,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025239407] [2022-01-11 02:20:59,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:20:59,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:20:59,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:20:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:20:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:20:59,129 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 50 states have internal predecessors, (67), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 02:20:59,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:20:59,147 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2022-01-11 02:20:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:20:59,149 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-01-11 02:20:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:20:59,155 INFO L225 Difference]: With dead ends: 99 [2022-01-11 02:20:59,155 INFO L226 Difference]: Without dead ends: 47 [2022-01-11 02:20:59,157 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 02:20:59,160 INFO L933 BasicCegarLoop]: 55 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, 55 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 02:20:59,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:20:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-11 02:20:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-11 02:20:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 46 states have internal predecessors, (51), 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 02:20:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-01-11 02:20:59,190 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 9 [2022-01-11 02:20:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:20:59,191 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-01-11 02:20:59,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 02:20:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-01-11 02:20:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:20:59,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:20:59,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:20:59,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:20:59,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:20:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:20:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1006660880, now seen corresponding path program 1 times [2022-01-11 02:20:59,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:20:59,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143766165] [2022-01-11 02:20:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:20:59,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:20:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:20:59,351 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 02:20:59,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:20:59,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143766165] [2022-01-11 02:20:59,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143766165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:20:59,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:20:59,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:20:59,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077030850] [2022-01-11 02:20:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:20:59,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:20:59,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:20:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:20:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:20:59,354 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:20:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:20:59,398 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-01-11 02:20:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:20:59,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:20:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:20:59,400 INFO L225 Difference]: With dead ends: 89 [2022-01-11 02:20:59,400 INFO L226 Difference]: Without dead ends: 49 [2022-01-11 02:20:59,401 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 02:20:59,402 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:20:59,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:20:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-11 02:20:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-11 02:20:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.325) internal successors, (53), 48 states have internal predecessors, (53), 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 02:20:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-11 02:20:59,407 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2022-01-11 02:20:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:20:59,407 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-11 02:20:59,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 02:20:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-11 02:20:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:20:59,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:20:59,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:20:59,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:20:59,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:20:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:20:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1107699669, now seen corresponding path program 1 times [2022-01-11 02:20:59,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:20:59,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426283826] [2022-01-11 02:20:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:20:59,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:20:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:20:59,678 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 02:20:59,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:20:59,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426283826] [2022-01-11 02:20:59,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426283826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:20:59,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:20:59,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:20:59,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067997108] [2022-01-11 02:20:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:20:59,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:20:59,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:20:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:20:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:20:59,680 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 02:21:01,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:21:03,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:21:05,571 WARN L534 Checker$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 02:21:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:05,932 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2022-01-11 02:21:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:21:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 02:21:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:05,933 INFO L225 Difference]: With dead ends: 93 [2022-01-11 02:21:05,934 INFO L226 Difference]: Without dead ends: 91 [2022-01-11 02:21:05,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:21:05,935 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 70 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:05,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 130 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 73 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-01-11 02:21:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-11 02:21:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 53. [2022-01-11 02:21:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 52 states have internal predecessors, (59), 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 02:21:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-01-11 02:21:05,946 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 11 [2022-01-11 02:21:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:05,947 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-01-11 02:21:05,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 02:21:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-01-11 02:21:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 02:21:05,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:05,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:05,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:21:05,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 21012068, now seen corresponding path program 1 times [2022-01-11 02:21:05,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:05,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74165541] [2022-01-11 02:21:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:05,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:05,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:05,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637808608] [2022-01-11 02:21:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:05,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:05,963 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 02:21:05,964 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 02:21:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:06,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:06,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:06,366 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 02:21:06,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:06,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74165541] [2022-01-11 02:21:06,366 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:06,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637808608] [2022-01-11 02:21:06,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637808608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:06,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:06,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:21:06,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900148959] [2022-01-11 02:21:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:06,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:21:06,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:21:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:06,368 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 02:21:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:06,423 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-01-11 02:21:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:06,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 02:21:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:06,424 INFO L225 Difference]: With dead ends: 66 [2022-01-11 02:21:06,424 INFO L226 Difference]: Without dead ends: 54 [2022-01-11 02:21:06,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:06,425 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 1 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:06,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 185 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:21:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-11 02:21:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-01-11 02:21:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 52 states have internal predecessors, (58), 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 02:21:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-01-11 02:21:06,435 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2022-01-11 02:21:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:06,435 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-01-11 02:21:06,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 02:21:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-01-11 02:21:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:21:06,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:06,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:06,452 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 02:21:06,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:06,644 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:06,645 INFO L85 PathProgramCache]: Analyzing trace with hash 652545041, now seen corresponding path program 1 times [2022-01-11 02:21:06,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:06,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875735370] [2022-01-11 02:21:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:06,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:06,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:06,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969252016] [2022-01-11 02:21:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:06,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:06,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:06,675 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 02:21:06,676 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 02:21:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:06,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 02:21:06,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:07,056 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 02:21:07,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:07,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:07,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875735370] [2022-01-11 02:21:07,057 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:07,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969252016] [2022-01-11 02:21:07,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969252016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:07,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:07,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:21:07,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185089679] [2022-01-11 02:21:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:07,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:21:07,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:21:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:07,059 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 02:21:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:07,606 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2022-01-11 02:21:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:21:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2022-01-11 02:21:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:07,607 INFO L225 Difference]: With dead ends: 118 [2022-01-11 02:21:07,607 INFO L226 Difference]: Without dead ends: 74 [2022-01-11 02:21:07,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:21:07,608 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 73 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:07,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 95 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 02:21:07,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-11 02:21:07,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2022-01-11 02:21:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 66 states have internal predecessors, (73), 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 02:21:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-01-11 02:21:07,618 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 13 [2022-01-11 02:21:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:07,618 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-01-11 02:21:07,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 02:21:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-01-11 02:21:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:21:07,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:07,619 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:07,639 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 02:21:07,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:07,831 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1478756783, now seen corresponding path program 1 times [2022-01-11 02:21:07,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:07,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867953768] [2022-01-11 02:21:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:07,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:07,996 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 02:21:07,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:07,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867953768] [2022-01-11 02:21:07,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867953768] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:21:07,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897161828] [2022-01-11 02:21:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:07,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:07,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:07,998 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 02:21:07,999 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 02:21:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:08,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:08,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:08,427 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 02:21:08,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:21:08,575 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 02:21:08,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897161828] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:21:08,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:21:08,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-01-11 02:21:08,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594176619] [2022-01-11 02:21:08,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:21:08,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 02:21:08,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 02:21:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:21:08,577 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 02:21:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:08,944 INFO L93 Difference]: Finished difference Result 160 states and 173 transitions. [2022-01-11 02:21:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 02:21:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 13 [2022-01-11 02:21:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:08,945 INFO L225 Difference]: With dead ends: 160 [2022-01-11 02:21:08,946 INFO L226 Difference]: Without dead ends: 120 [2022-01-11 02:21:08,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:21:08,946 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 86 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:08,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 305 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:21:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-11 02:21:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 75. [2022-01-11 02:21:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 74 states have internal predecessors, (83), 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 02:21:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2022-01-11 02:21:08,958 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 13 [2022-01-11 02:21:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:08,958 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2022-01-11 02:21:08,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 02:21:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2022-01-11 02:21:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:21:08,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:08,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:08,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:21:09,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:09,172 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:09,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:09,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1369163444, now seen corresponding path program 1 times [2022-01-11 02:21:09,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:09,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994297769] [2022-01-11 02:21:09,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:09,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:09,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994297769] [2022-01-11 02:21:09,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994297769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:21:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252145246] [2022-01-11 02:21:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:09,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:09,320 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 02:21:09,321 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 02:21:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:09,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 02:21:09,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:09,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:09,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252145246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:09,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:21:09,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-01-11 02:21:09,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001283531] [2022-01-11 02:21:09,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:09,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:21:09,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:21:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:21:09,587 INFO L87 Difference]: Start difference. First operand 75 states and 83 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 02:21:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:10,178 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2022-01-11 02:21:10,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:21:10,179 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 02:21:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:10,179 INFO L225 Difference]: With dead ends: 158 [2022-01-11 02:21:10,180 INFO L226 Difference]: Without dead ends: 156 [2022-01-11 02:21:10,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-11 02:21:10,180 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 172 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:10,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 128 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 02:21:10,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-11 02:21:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 78. [2022-01-11 02:21:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 77 states have internal predecessors, (87), 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 02:21:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-01-11 02:21:10,189 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 14 [2022-01-11 02:21:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:10,189 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-01-11 02:21:10,189 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 02:21:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-01-11 02:21:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:21:10,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:10,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:10,208 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 02:21:10,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:10,390 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash 30597047, now seen corresponding path program 1 times [2022-01-11 02:21:10,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:10,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23420161] [2022-01-11 02:21:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:10,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:10,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:10,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539442507] [2022-01-11 02:21:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:10,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:10,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:10,403 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 02:21:10,404 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 02:21:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:10,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:10,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:10,640 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 02:21:10,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:10,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23420161] [2022-01-11 02:21:10,641 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:10,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539442507] [2022-01-11 02:21:10,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539442507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:10,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:10,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:21:10,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622798269] [2022-01-11 02:21:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:21:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:21:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:21:10,642 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 02:21:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:11,739 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2022-01-11 02:21:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:11,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-01-11 02:21:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:11,741 INFO L225 Difference]: With dead ends: 85 [2022-01-11 02:21:11,742 INFO L226 Difference]: Without dead ends: 64 [2022-01-11 02:21:11,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 02:21:11,742 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:11,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 97 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 02:21:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-11 02:21:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-01-11 02:21:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 60 states have internal predecessors, (68), 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 02:21:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-01-11 02:21:11,749 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 15 [2022-01-11 02:21:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:11,749 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-01-11 02:21:11,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 02:21:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-01-11 02:21:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:21:11,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:11,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:11,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-11 02:21:11,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:11,980 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash 505569635, now seen corresponding path program 1 times [2022-01-11 02:21:11,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:11,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511594327] [2022-01-11 02:21:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:11,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:11,987 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:11,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340934073] [2022-01-11 02:21:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:11,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:11,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:11,991 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 02:21:11,992 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 02:21:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:12,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 02:21:12,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:12,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:21:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:12,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511594327] [2022-01-11 02:21:12,783 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:12,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340934073] [2022-01-11 02:21:12,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340934073] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:21:12,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:21:12,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-11 02:21:12,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665885826] [2022-01-11 02:21:12,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:21:12,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 02:21:12,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 02:21:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:21:12,784 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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 02:21:12,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:12,886 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-01-11 02:21:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 02:21:12,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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 15 [2022-01-11 02:21:12,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:12,887 INFO L225 Difference]: With dead ends: 80 [2022-01-11 02:21:12,887 INFO L226 Difference]: Without dead ends: 68 [2022-01-11 02:21:12,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:21:12,888 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 18 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:12,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 294 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-01-11 02:21:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-11 02:21:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-01-11 02:21:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.309090909090909) internal successors, (72), 63 states have internal predecessors, (72), 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 02:21:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-01-11 02:21:12,896 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 15 [2022-01-11 02:21:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:12,896 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-01-11 02:21:12,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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 02:21:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-01-11 02:21:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 02:21:12,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:12,899 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:12,905 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 02:21:13,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:13,104 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1506039566, now seen corresponding path program 1 times [2022-01-11 02:21:13,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:13,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102995728] [2022-01-11 02:21:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:13,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:13,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:13,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235972929] [2022-01-11 02:21:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:13,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:13,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:13,114 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 02:21:13,115 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 02:21:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:13,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:21:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:13,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:13,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:13,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102995728] [2022-01-11 02:21:13,389 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:13,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235972929] [2022-01-11 02:21:13,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235972929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:13,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:13,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:21:13,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456916991] [2022-01-11 02:21:13,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:13,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:21:13,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:21:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:13,391 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 02:21:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:13,935 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2022-01-11 02:21:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:13,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-01-11 02:21:13,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:13,936 INFO L225 Difference]: With dead ends: 74 [2022-01-11 02:21:13,936 INFO L226 Difference]: Without dead ends: 72 [2022-01-11 02:21:13,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:13,936 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 15 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:13,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 135 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 24 Unchecked, 0.5s Time] [2022-01-11 02:21:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-11 02:21:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2022-01-11 02:21:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 68 states have internal predecessors, (79), 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 02:21:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-01-11 02:21:13,942 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 16 [2022-01-11 02:21:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:13,942 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-01-11 02:21:13,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 02:21:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-01-11 02:21:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 02:21:13,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:13,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:13,958 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 02:21:14,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:14,158 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 99993688, now seen corresponding path program 1 times [2022-01-11 02:21:14,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:14,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858691164] [2022-01-11 02:21:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:14,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:14,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:14,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977204220] [2022-01-11 02:21:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:14,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:14,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:14,169 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 02:21:14,170 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 02:21:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:14,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-11 02:21:14,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 02:21:14,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:14,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:14,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858691164] [2022-01-11 02:21:14,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:14,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977204220] [2022-01-11 02:21:14,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977204220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:14,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:14,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:21:14,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303332309] [2022-01-11 02:21:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:14,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:21:14,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:21:14,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:21:14,409 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 02:21:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:15,314 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2022-01-11 02:21:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:15,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 02:21:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:15,314 INFO L225 Difference]: With dead ends: 102 [2022-01-11 02:21:15,314 INFO L226 Difference]: Without dead ends: 92 [2022-01-11 02:21:15,315 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 02:21:15,315 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:15,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 93 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 02:21:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-11 02:21:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2022-01-11 02:21:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 82 states have internal predecessors, (96), 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 02:21:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2022-01-11 02:21:15,321 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 18 [2022-01-11 02:21:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:15,321 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2022-01-11 02:21:15,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 02:21:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2022-01-11 02:21:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:21:15,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:15,322 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 02:21:15,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-11 02:21:15,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 02:21:15,525 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:15,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1604691804, now seen corresponding path program 1 times [2022-01-11 02:21:15,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:15,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883131341] [2022-01-11 02:21:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:15,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:15,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:15,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263776265] [2022-01-11 02:21:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:15,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:15,536 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:15,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-11 02:21:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:15,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 02:21:15,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:16,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:16,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:16,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883131341] [2022-01-11 02:21:16,073 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:16,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263776265] [2022-01-11 02:21:16,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263776265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:16,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:16,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:21:16,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905508950] [2022-01-11 02:21:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:21:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:21:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:16,074 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 02:21:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:16,339 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2022-01-11 02:21:16,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:21:16,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 02:21:16,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:16,340 INFO L225 Difference]: With dead ends: 88 [2022-01-11 02:21:16,340 INFO L226 Difference]: Without dead ends: 86 [2022-01-11 02:21:16,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:16,340 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 21 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:16,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 102 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-01-11 02:21:16,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-11 02:21:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2022-01-11 02:21:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 82 states have internal predecessors, (95), 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 02:21:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2022-01-11 02:21:16,351 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 20 [2022-01-11 02:21:16,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:16,351 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2022-01-11 02:21:16,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 02:21:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2022-01-11 02:21:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 02:21:16,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:16,352 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:16,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-11 02:21:16,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:16,558 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1224770096, now seen corresponding path program 2 times [2022-01-11 02:21:16,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:16,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207493780] [2022-01-11 02:21:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:16,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:16,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:16,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207493780] [2022-01-11 02:21:16,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207493780] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:21:16,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35523374] [2022-01-11 02:21:16,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:21:16,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:16,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:16,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:16,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-11 02:21:17,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:21:17,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:21:17,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-11 02:21:17,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:41,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:21:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:21:43,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35523374] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:21:43,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:21:43,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2022-01-11 02:21:43,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533317350] [2022-01-11 02:21:43,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:21:43,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-11 02:21:43,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-11 02:21:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=274, Unknown=11, NotChecked=0, Total=380 [2022-01-11 02:21:43,096 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 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 02:21:56,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:21:56,980 INFO L93 Difference]: Finished difference Result 162 states and 189 transitions. [2022-01-11 02:21:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-11 02:21:56,981 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 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) Word has length 22 [2022-01-11 02:21:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:21:56,981 INFO L225 Difference]: With dead ends: 162 [2022-01-11 02:21:56,981 INFO L226 Difference]: Without dead ends: 103 [2022-01-11 02:21:56,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=246, Invalid=670, Unknown=14, NotChecked=0, Total=930 [2022-01-11 02:21:56,982 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 39 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 02:21:56,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 373 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 21 Unchecked, 0.7s Time] [2022-01-11 02:21:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-11 02:21:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2022-01-11 02:21:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 96 states have internal predecessors, (113), 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 02:21:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2022-01-11 02:21:56,989 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 22 [2022-01-11 02:21:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:21:56,990 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2022-01-11 02:21:56,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 19 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 02:21:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2022-01-11 02:21:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 02:21:56,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:21:56,990 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:21:56,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-11 02:21:57,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-11 02:21:57,194 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:21:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:21:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1035821250, now seen corresponding path program 1 times [2022-01-11 02:21:57,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:21:57,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758303816] [2022-01-11 02:21:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:57,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:21:57,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:21:57,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697045330] [2022-01-11 02:21:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:21:57,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:21:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:21:57,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:21:57,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-11 02:21:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:21:57,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-11 02:21:57,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:21:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 02:21:58,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:21:58,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:21:58,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758303816] [2022-01-11 02:21:58,656 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:21:58,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697045330] [2022-01-11 02:21:58,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697045330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:21:58,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:21:58,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:21:58,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338027012] [2022-01-11 02:21:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:21:58,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:21:58,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:21:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:21:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:21:58,657 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 02:22:00,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:04,480 WARN L534 Checker$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 02:22:06,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:08,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:13,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:22:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:22:13,583 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2022-01-11 02:22:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:22:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 24 [2022-01-11 02:22:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:22:13,584 INFO L225 Difference]: With dead ends: 113 [2022-01-11 02:22:13,584 INFO L226 Difference]: Without dead ends: 111 [2022-01-11 02:22:13,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:22:13,585 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 24 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-01-11 02:22:13,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 90 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 73 Invalid, 5 Unknown, 0 Unchecked, 14.6s Time] [2022-01-11 02:22:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-11 02:22:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2022-01-11 02:22:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 1.264367816091954) internal successors, (110), 94 states have internal predecessors, (110), 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 02:22:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2022-01-11 02:22:13,593 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 24 [2022-01-11 02:22:13,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:22:13,593 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2022-01-11 02:22:13,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 02:22:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2022-01-11 02:22:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-11 02:22:13,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:13,593 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:13,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-11 02:22:13,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-11 02:22:13,797 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-11 02:22:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash -469076215, now seen corresponding path program 1 times [2022-01-11 02:22:13,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377219100] [2022-01-11 02:22:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:13,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:13,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:22:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025550938] [2022-01-11 02:22:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:13,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:22:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:13,815 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:22:13,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-11 02:22:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:22:14,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-11 02:22:14,004 INFO L286 TraceCheckSpWp]: Computing forward predicates...