./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 06:25:51,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 06:25:51,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 06:25:51,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 06:25:51,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 06:25:51,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 06:25:51,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 06:25:51,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 06:25:51,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 06:25:51,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 06:25:51,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 06:25:51,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 06:25:51,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 06:25:51,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 06:25:51,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 06:25:51,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 06:25:51,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 06:25:51,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 06:25:51,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 06:25:51,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 06:25:51,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 06:25:51,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 06:25:51,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 06:25:51,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 06:25:51,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 06:25:51,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 06:25:51,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 06:25:51,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 06:25:51,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 06:25:51,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 06:25:51,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 06:25:51,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 06:25:51,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 06:25:51,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 06:25:51,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 06:25:51,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 06:25:51,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 06:25:51,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 06:25:51,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 06:25:51,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 06:25:51,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 06:25:51,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 06:25:51,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 06:25:51,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 06:25:51,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 06:25:51,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 06:25:51,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 06:25:51,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 06:25:51,247 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 06:25:51,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 06:25:51,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 06:25:51,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 06:25:51,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 06:25:51,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 06:25:51,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 06:25:51,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 06:25:51,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 06:25:51,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 06:25:51,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 06:25:51,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 06:25:51,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 06:25:51,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 06:25:51,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 06:25:51,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 06:25:51,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 06:25:51,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 06:25:51,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 06:25:51,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 06:25:51,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 06:25:51,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 06:25:51,252 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 06:25:51,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 06:25:51,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 06:25:51,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 06:25:51,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2021-11-23 06:25:51,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 06:25:51,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 06:25:51,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 06:25:51,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 06:25:51,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 06:25:51,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-23 06:25:51,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02e011bf/de3f0e7824ba4b0b81568999e6b72ca1/FLAGf2928b5ab [2021-11-23 06:25:51,889 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 06:25:51,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-23 06:25:51,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02e011bf/de3f0e7824ba4b0b81568999e6b72ca1/FLAGf2928b5ab [2021-11-23 06:25:51,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02e011bf/de3f0e7824ba4b0b81568999e6b72ca1 [2021-11-23 06:25:51,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 06:25:51,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 06:25:51,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 06:25:51,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 06:25:51,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 06:25:51,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:25:51" (1/1) ... [2021-11-23 06:25:51,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36315dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:51, skipping insertion in model container [2021-11-23 06:25:51,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:25:51" (1/1) ... [2021-11-23 06:25:51,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 06:25:51,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 06:25:52,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-23 06:25:52,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-23 06:25:52,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 06:25:52,464 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 06:25:52,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-23 06:25:52,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-23 06:25:52,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 06:25:52,580 INFO L208 MainTranslator]: Completed translation [2021-11-23 06:25:52,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52 WrapperNode [2021-11-23 06:25:52,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 06:25:52,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 06:25:52,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 06:25:52,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 06:25:52,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,668 INFO L137 Inliner]: procedures = 177, calls = 487, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 1739 [2021-11-23 06:25:52,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 06:25:52,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 06:25:52,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 06:25:52,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 06:25:52,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 06:25:52,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 06:25:52,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 06:25:52,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 06:25:52,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (1/1) ... [2021-11-23 06:25:52,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 06:25:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:25:52,852 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) [2021-11-23 06:25:52,860 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 [2021-11-23 06:25:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 06:25:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 06:25:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 06:25:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 06:25:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 06:25:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 06:25:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 06:25:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 06:25:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 06:25:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 06:25:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 06:25:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 06:25:53,089 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 06:25:53,090 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 06:25:54,854 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 06:25:54,865 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 06:25:54,865 INFO L301 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-23 06:25:54,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:25:54 BoogieIcfgContainer [2021-11-23 06:25:54,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 06:25:54,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 06:25:54,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 06:25:54,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 06:25:54,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:25:51" (1/3) ... [2021-11-23 06:25:54,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451e6400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:25:54, skipping insertion in model container [2021-11-23 06:25:54,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:52" (2/3) ... [2021-11-23 06:25:54,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451e6400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:25:54, skipping insertion in model container [2021-11-23 06:25:54,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:25:54" (3/3) ... [2021-11-23 06:25:54,874 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-3.i [2021-11-23 06:25:54,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 06:25:54,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 06:25:54,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 06:25:54,930 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 [2021-11-23 06:25:54,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 06:25:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 306 states have (on average 1.7124183006535947) internal successors, (524), 312 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 06:25:54,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:25:54,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:25:54,958 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:25:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:25:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 889803269, now seen corresponding path program 1 times [2021-11-23 06:25:54,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:25:54,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935700989] [2021-11-23 06:25:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:54,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:25:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:25:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:25:55,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:25:55,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935700989] [2021-11-23 06:25:55,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935700989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:25:55,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:25:55,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 06:25:55,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453176147] [2021-11-23 06:25:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:25:55,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 06:25:55,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:25:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 06:25:55,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 06:25:55,138 INFO L87 Difference]: Start difference. First operand has 313 states, 306 states have (on average 1.7124183006535947) internal successors, (524), 312 states have internal predecessors, (524), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:25:55,174 INFO L93 Difference]: Finished difference Result 624 states and 1046 transitions. [2021-11-23 06:25:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 06:25:55,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-23 06:25:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:25:55,188 INFO L225 Difference]: With dead ends: 624 [2021-11-23 06:25:55,188 INFO L226 Difference]: Without dead ends: 259 [2021-11-23 06:25:55,192 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 [2021-11-23 06:25:55,196 INFO L933 BasicCegarLoop]: 411 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, 411 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 [2021-11-23 06:25:55,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:25:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-23 06:25:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-11-23 06:25:55,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 253 states have (on average 1.3359683794466404) internal successors, (338), 258 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2021-11-23 06:25:55,236 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 8 [2021-11-23 06:25:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:25:55,236 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2021-11-23 06:25:55,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2021-11-23 06:25:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 06:25:55,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:25:55,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:25:55,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 06:25:55,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:25:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:25:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash -680083031, now seen corresponding path program 1 times [2021-11-23 06:25:55,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:25:55,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048901578] [2021-11-23 06:25:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:55,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:25:55,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:25:55,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907731504] [2021-11-23 06:25:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:55,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:25:55,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:25:55,258 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) [2021-11-23 06:25:55,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 06:25:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:25:55,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 06:25:55,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:25:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:25:55,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:25:55,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:25:55,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048901578] [2021-11-23 06:25:55,498 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:25:55,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907731504] [2021-11-23 06:25:55,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907731504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:25:55,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:25:55,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:25:55,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795096182] [2021-11-23 06:25:55,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:25:55,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:25:55,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:25:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:25:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:25:55,505 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:25:55,548 INFO L93 Difference]: Finished difference Result 602 states and 784 transitions. [2021-11-23 06:25:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:25:55,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-23 06:25:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:25:55,552 INFO L225 Difference]: With dead ends: 602 [2021-11-23 06:25:55,552 INFO L226 Difference]: Without dead ends: 515 [2021-11-23 06:25:55,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:25:55,553 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 332 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:25:55,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 663 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:25:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-11-23 06:25:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 260. [2021-11-23 06:25:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 254 states have (on average 1.3346456692913387) internal successors, (339), 259 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 339 transitions. [2021-11-23 06:25:55,571 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 339 transitions. Word has length 42 [2021-11-23 06:25:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:25:55,572 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 339 transitions. [2021-11-23 06:25:55,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 339 transitions. [2021-11-23 06:25:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 06:25:55,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:25:55,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:25:55,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 06:25:55,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:25:55,800 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:25:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:25:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1837409792, now seen corresponding path program 1 times [2021-11-23 06:25:55,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:25:55,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839455140] [2021-11-23 06:25:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:55,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:25:55,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:25:55,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609688157] [2021-11-23 06:25:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:55,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:25:55,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:25:55,996 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) [2021-11-23 06:25:55,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 06:25:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:25:56,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:25:56,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:25:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:25:57,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:25:57,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:25:57,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839455140] [2021-11-23 06:25:57,084 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:25:57,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609688157] [2021-11-23 06:25:57,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609688157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:25:57,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:25:57,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:25:57,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281704004] [2021-11-23 06:25:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:25:57,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:25:57,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:25:57,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:25:57,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:25:57,087 INFO L87 Difference]: Start difference. First operand 260 states and 339 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:25:57,161 INFO L93 Difference]: Finished difference Result 538 states and 706 transitions. [2021-11-23 06:25:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:25:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-23 06:25:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:25:57,163 INFO L225 Difference]: With dead ends: 538 [2021-11-23 06:25:57,163 INFO L226 Difference]: Without dead ends: 281 [2021-11-23 06:25:57,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:25:57,168 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 9 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:25:57,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 621 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:25:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-23 06:25:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2021-11-23 06:25:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 274 states have (on average 1.3102189781021898) internal successors, (359), 279 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 359 transitions. [2021-11-23 06:25:57,224 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 359 transitions. Word has length 140 [2021-11-23 06:25:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:25:57,224 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 359 transitions. [2021-11-23 06:25:57,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 359 transitions. [2021-11-23 06:25:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 06:25:57,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:25:57,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:25:57,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 06:25:57,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 06:25:57,436 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:25:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:25:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1273244668, now seen corresponding path program 1 times [2021-11-23 06:25:57,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:25:57,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557760878] [2021-11-23 06:25:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:57,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:25:57,527 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:25:57,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901463966] [2021-11-23 06:25:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:57,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:25:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:25:57,529 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) [2021-11-23 06:25:57,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 06:25:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:25:58,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:25:58,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:25:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:25:58,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:25:58,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:25:58,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557760878] [2021-11-23 06:25:58,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:25:58,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901463966] [2021-11-23 06:25:58,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901463966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:25:58,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:25:58,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:25:58,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280531515] [2021-11-23 06:25:58,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:25:58,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:25:58,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:25:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:25:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:25:58,554 INFO L87 Difference]: Start difference. First operand 280 states and 359 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:25:58,611 INFO L93 Difference]: Finished difference Result 578 states and 746 transitions. [2021-11-23 06:25:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:25:58,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-23 06:25:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:25:58,613 INFO L225 Difference]: With dead ends: 578 [2021-11-23 06:25:58,613 INFO L226 Difference]: Without dead ends: 301 [2021-11-23 06:25:58,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:25:58,614 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 9 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:25:58,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 621 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:25:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-23 06:25:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2021-11-23 06:25:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.2891156462585034) internal successors, (379), 299 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 379 transitions. [2021-11-23 06:25:58,621 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 379 transitions. Word has length 140 [2021-11-23 06:25:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:25:58,622 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 379 transitions. [2021-11-23 06:25:58,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:25:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 379 transitions. [2021-11-23 06:25:58,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 06:25:58,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:25:58,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:25:58,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 06:25:58,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:25:58,841 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:25:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:25:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash -882913664, now seen corresponding path program 1 times [2021-11-23 06:25:58,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:25:58,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107296049] [2021-11-23 06:25:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:58,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:25:58,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:25:58,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520500858] [2021-11-23 06:25:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:25:58,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:25:58,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:25:58,987 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) [2021-11-23 06:25:59,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 06:25:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:25:59,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:25:59,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 06:26:00,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:26:00,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:00,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107296049] [2021-11-23 06:26:00,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:00,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520500858] [2021-11-23 06:26:00,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520500858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:26:00,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:26:00,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:26:00,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040256855] [2021-11-23 06:26:00,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:26:00,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:26:00,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:00,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:26:00,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:00,175 INFO L87 Difference]: Start difference. First operand 300 states and 379 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:00,234 INFO L93 Difference]: Finished difference Result 407 states and 520 transitions. [2021-11-23 06:26:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:26:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-23 06:26:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:00,247 INFO L225 Difference]: With dead ends: 407 [2021-11-23 06:26:00,247 INFO L226 Difference]: Without dead ends: 321 [2021-11-23 06:26:00,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:00,248 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 10 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:00,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 621 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:26:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-23 06:26:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-23 06:26:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 314 states have (on average 1.2707006369426752) internal successors, (399), 319 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 399 transitions. [2021-11-23 06:26:00,255 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 399 transitions. Word has length 140 [2021-11-23 06:26:00,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:00,255 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 399 transitions. [2021-11-23 06:26:00,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 399 transitions. [2021-11-23 06:26:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 06:26:00,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:00,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:00,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:00,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:00,462 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 115522436, now seen corresponding path program 1 times [2021-11-23 06:26:00,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:00,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714726133] [2021-11-23 06:26:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:00,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:00,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:00,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696811019] [2021-11-23 06:26:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:00,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:00,579 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) [2021-11-23 06:26:00,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 06:26:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:26:01,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:26:01,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:26:01,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:26:01,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:01,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714726133] [2021-11-23 06:26:01,817 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:01,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696811019] [2021-11-23 06:26:01,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696811019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:26:01,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:26:01,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:26:01,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489684555] [2021-11-23 06:26:01,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:26:01,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:26:01,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:26:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:26:01,819 INFO L87 Difference]: Start difference. First operand 320 states and 399 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:01,874 INFO L93 Difference]: Finished difference Result 629 states and 787 transitions. [2021-11-23 06:26:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:26:01,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-23 06:26:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:01,876 INFO L225 Difference]: With dead ends: 629 [2021-11-23 06:26:01,877 INFO L226 Difference]: Without dead ends: 312 [2021-11-23 06:26:01,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:26:01,878 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 326 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:01,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 629 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:26:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-23 06:26:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-23 06:26:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 300 states have (on average 1.26) internal successors, (378), 305 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 378 transitions. [2021-11-23 06:26:01,883 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 378 transitions. Word has length 140 [2021-11-23 06:26:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:01,884 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 378 transitions. [2021-11-23 06:26:01,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 378 transitions. [2021-11-23 06:26:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 06:26:01,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:01,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:01,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:02,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:02,096 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash 32737974, now seen corresponding path program 1 times [2021-11-23 06:26:02,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:02,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240756333] [2021-11-23 06:26:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:02,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:02,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:02,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337995648] [2021-11-23 06:26:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:02,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:02,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:02,207 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) [2021-11-23 06:26:02,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 06:26:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:26:03,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:26:03,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:26:03,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:26:03,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:03,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240756333] [2021-11-23 06:26:03,484 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:03,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337995648] [2021-11-23 06:26:03,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337995648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:26:03,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:26:03,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:26:03,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100086932] [2021-11-23 06:26:03,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:26:03,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:26:03,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:03,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:26:03,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:26:03,485 INFO L87 Difference]: Start difference. First operand 306 states and 378 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:03,534 INFO L93 Difference]: Finished difference Result 690 states and 854 transitions. [2021-11-23 06:26:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:26:03,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-23 06:26:03,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:03,536 INFO L225 Difference]: With dead ends: 690 [2021-11-23 06:26:03,536 INFO L226 Difference]: Without dead ends: 387 [2021-11-23 06:26:03,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:26:03,537 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 319 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:03,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 924 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:26:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-23 06:26:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 292. [2021-11-23 06:26:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 286 states have (on average 1.2482517482517483) internal successors, (357), 291 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 357 transitions. [2021-11-23 06:26:03,543 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 357 transitions. Word has length 140 [2021-11-23 06:26:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 357 transitions. [2021-11-23 06:26:03,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 357 transitions. [2021-11-23 06:26:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 06:26:03,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:03,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:03,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:03,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:03,771 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash -577227324, now seen corresponding path program 1 times [2021-11-23 06:26:03,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:03,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921337796] [2021-11-23 06:26:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:03,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:03,904 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:03,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603860196] [2021-11-23 06:26:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:03,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:03,906 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) [2021-11-23 06:26:03,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 06:26:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:26:05,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 3034 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:26:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 06:26:05,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:26:05,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:05,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921337796] [2021-11-23 06:26:05,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:05,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603860196] [2021-11-23 06:26:05,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603860196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:26:05,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:26:05,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:26:05,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850036820] [2021-11-23 06:26:05,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:26:05,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:26:05,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:05,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:26:05,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:26:05,341 INFO L87 Difference]: Start difference. First operand 292 states and 357 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:05,412 INFO L93 Difference]: Finished difference Result 389 states and 478 transitions. [2021-11-23 06:26:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:26:05,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-23 06:26:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:05,414 INFO L225 Difference]: With dead ends: 389 [2021-11-23 06:26:05,414 INFO L226 Difference]: Without dead ends: 283 [2021-11-23 06:26:05,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:26:05,415 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 100 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:05,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 807 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:26:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-23 06:26:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2021-11-23 06:26:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.2352941176470589) internal successors, (336), 277 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2021-11-23 06:26:05,422 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 140 [2021-11-23 06:26:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:05,422 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2021-11-23 06:26:05,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2021-11-23 06:26:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-23 06:26:05,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:05,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:05,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:05,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:05,640 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1460076170, now seen corresponding path program 1 times [2021-11-23 06:26:05,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:05,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045807042] [2021-11-23 06:26:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:05,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:05,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:05,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125972269] [2021-11-23 06:26:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:05,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:05,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:05,765 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) [2021-11-23 06:26:05,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 06:26:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:26:07,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:26:07,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:26:07,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 06:26:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:26:07,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045807042] [2021-11-23 06:26:07,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125972269] [2021-11-23 06:26:07,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125972269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 06:26:07,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 06:26:07,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 06:26:07,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886876919] [2021-11-23 06:26:07,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 06:26:07,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 06:26:07,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:07,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 06:26:07,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 06:26:07,625 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:07,675 INFO L93 Difference]: Finished difference Result 1101 states and 1333 transitions. [2021-11-23 06:26:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 06:26:07,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 140 [2021-11-23 06:26:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:07,679 INFO L225 Difference]: With dead ends: 1101 [2021-11-23 06:26:07,679 INFO L226 Difference]: Without dead ends: 1008 [2021-11-23 06:26:07,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 06:26:07,681 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 1355 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:07,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 1138 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:26:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-23 06:26:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 824. [2021-11-23 06:26:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 818 states have (on average 1.2249388753056234) internal successors, (1002), 823 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1002 transitions. [2021-11-23 06:26:07,698 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1002 transitions. Word has length 140 [2021-11-23 06:26:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:07,698 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 1002 transitions. [2021-11-23 06:26:07,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1002 transitions. [2021-11-23 06:26:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-23 06:26:07,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:07,703 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:07,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:07,915 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,SelfDestructingSolverStorable8 [2021-11-23 06:26:07,915 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1752556603, now seen corresponding path program 2 times [2021-11-23 06:26:07,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:07,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645254495] [2021-11-23 06:26:07,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:07,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:08,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:08,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194372729] [2021-11-23 06:26:08,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 06:26:08,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:08,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:08,299 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) [2021-11-23 06:26:08,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 06:26:11,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 06:26:11,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 06:26:11,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 11696 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 06:26:11,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:26:12,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 06:26:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:26:13,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:13,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645254495] [2021-11-23 06:26:13,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:13,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194372729] [2021-11-23 06:26:13,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194372729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 06:26:13,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 06:26:13,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-23 06:26:13,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562900486] [2021-11-23 06:26:13,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 06:26:13,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 06:26:13,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 06:26:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-23 06:26:13,093 INFO L87 Difference]: Start difference. First operand 824 states and 1002 transitions. Second operand has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:13,220 INFO L93 Difference]: Finished difference Result 2469 states and 2995 transitions. [2021-11-23 06:26:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 06:26:13,221 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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 434 [2021-11-23 06:26:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:13,229 INFO L225 Difference]: With dead ends: 2469 [2021-11-23 06:26:13,230 INFO L226 Difference]: Without dead ends: 2376 [2021-11-23 06:26:13,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-23 06:26:13,231 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 5030 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5030 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:13,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5030 Valid, 2986 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:26:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-11-23 06:26:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1916. [2021-11-23 06:26:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1910 states have (on average 1.2219895287958116) internal successors, (2334), 1915 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2334 transitions. [2021-11-23 06:26:13,265 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2334 transitions. Word has length 434 [2021-11-23 06:26:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:13,265 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 2334 transitions. [2021-11-23 06:26:13,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2334 transitions. [2021-11-23 06:26:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2021-11-23 06:26:13,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:13,283 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:13,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:13,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 06:26:13,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash -675748219, now seen corresponding path program 3 times [2021-11-23 06:26:13,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:13,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611144703] [2021-11-23 06:26:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:13,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:14,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:14,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301655207] [2021-11-23 06:26:14,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 06:26:14,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:14,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:14,563 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) [2021-11-23 06:26:14,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 06:26:18,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 06:26:18,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 06:26:18,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:26:18,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2021-11-23 06:26:22,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:26:22,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:22,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611144703] [2021-11-23 06:26:22,289 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:22,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301655207] [2021-11-23 06:26:22,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301655207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:26:22,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:26:22,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:26:22,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544220002] [2021-11-23 06:26:22,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:26:22,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:26:22,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:26:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:22,291 INFO L87 Difference]: Start difference. First operand 1916 states and 2334 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:22,340 INFO L93 Difference]: Finished difference Result 3761 states and 4580 transitions. [2021-11-23 06:26:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:26:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 1022 [2021-11-23 06:26:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:22,346 INFO L225 Difference]: With dead ends: 3761 [2021-11-23 06:26:22,347 INFO L226 Difference]: Without dead ends: 1990 [2021-11-23 06:26:22,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:22,349 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 154 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:22,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 652 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:26:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-11-23 06:26:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1978. [2021-11-23 06:26:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1972 states have (on average 1.2226166328600405) internal successors, (2411), 1977 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2411 transitions. [2021-11-23 06:26:22,384 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2411 transitions. Word has length 1022 [2021-11-23 06:26:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:22,384 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2411 transitions. [2021-11-23 06:26:22,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2411 transitions. [2021-11-23 06:26:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2021-11-23 06:26:22,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:22,401 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:22,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-23 06:26:22,615 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,SelfDestructingSolverStorable10 [2021-11-23 06:26:22,616 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:22,616 INFO L85 PathProgramCache]: Analyzing trace with hash -680932027, now seen corresponding path program 1 times [2021-11-23 06:26:22,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:22,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672301118] [2021-11-23 06:26:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:22,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:23,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:23,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751156546] [2021-11-23 06:26:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:23,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:23,707 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) [2021-11-23 06:26:23,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 06:26:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:26:32,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 28164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:26:32,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4077 trivial. 0 not checked. [2021-11-23 06:26:33,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:26:33,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:33,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672301118] [2021-11-23 06:26:33,389 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:33,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751156546] [2021-11-23 06:26:33,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751156546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:26:33,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:26:33,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:26:33,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740061344] [2021-11-23 06:26:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:26:33,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:26:33,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:26:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:33,391 INFO L87 Difference]: Start difference. First operand 1978 states and 2411 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:33,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:33,447 INFO L93 Difference]: Finished difference Result 3898 states and 4756 transitions. [2021-11-23 06:26:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:26:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 1029 [2021-11-23 06:26:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:33,454 INFO L225 Difference]: With dead ends: 3898 [2021-11-23 06:26:33,454 INFO L226 Difference]: Without dead ends: 1976 [2021-11-23 06:26:33,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1027 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:33,456 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 19 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:33,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 616 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:26:33,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-11-23 06:26:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1976. [2021-11-23 06:26:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1970 states have (on average 1.2223350253807106) internal successors, (2408), 1975 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2408 transitions. [2021-11-23 06:26:33,488 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2408 transitions. Word has length 1029 [2021-11-23 06:26:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:33,488 INFO L470 AbstractCegarLoop]: Abstraction has 1976 states and 2408 transitions. [2021-11-23 06:26:33,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2408 transitions. [2021-11-23 06:26:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2021-11-23 06:26:33,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:33,499 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:33,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:33,715 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,SelfDestructingSolverStorable11 [2021-11-23 06:26:33,716 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 733966165, now seen corresponding path program 1 times [2021-11-23 06:26:33,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564793770] [2021-11-23 06:26:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:33,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:34,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:34,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192109941] [2021-11-23 06:26:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:34,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:34,715 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) [2021-11-23 06:26:34,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 06:26:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:26:44,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 27280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:26:44,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:26:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4384 backedges. 1431 proven. 0 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2021-11-23 06:26:47,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:26:47,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:26:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564793770] [2021-11-23 06:26:47,726 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:26:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192109941] [2021-11-23 06:26:47,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192109941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:26:47,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:26:47,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:26:47,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847242111] [2021-11-23 06:26:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:26:47,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:26:47,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:26:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:26:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:47,728 INFO L87 Difference]: Start difference. First operand 1976 states and 2408 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:26:47,801 INFO L93 Difference]: Finished difference Result 4916 states and 5993 transitions. [2021-11-23 06:26:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:26:47,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 1036 [2021-11-23 06:26:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:26:47,844 INFO L225 Difference]: With dead ends: 4916 [2021-11-23 06:26:47,844 INFO L226 Difference]: Without dead ends: 3438 [2021-11-23 06:26:47,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:26:47,847 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 169 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:26:47,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 790 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:26:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-11-23 06:26:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 3426. [2021-11-23 06:26:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3420 states have (on average 1.2198830409356725) internal successors, (4172), 3425 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4172 transitions. [2021-11-23 06:26:47,909 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4172 transitions. Word has length 1036 [2021-11-23 06:26:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:26:47,910 INFO L470 AbstractCegarLoop]: Abstraction has 3426 states and 4172 transitions. [2021-11-23 06:26:47,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:26:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4172 transitions. [2021-11-23 06:26:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2021-11-23 06:26:47,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:26:47,923 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:26:48,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 06:26:48,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 06:26:48,130 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 06:26:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:26:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1492434323, now seen corresponding path program 1 times [2021-11-23 06:26:48,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:26:48,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903345812] [2021-11-23 06:26:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:48,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:26:49,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:26:49,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519116773] [2021-11-23 06:26:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:26:49,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:26:49,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:26:49,317 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 06:26:49,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15