./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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_BER_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:33:22,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:33:22,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:33:22,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:33:22,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:33:22,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:33:22,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:33:22,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:33:22,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:33:22,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:33:22,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:33:22,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:33:22,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:33:22,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:33:22,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:33:22,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:33:22,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:33:22,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:33:22,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:33:22,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:33:22,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:33:22,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:33:22,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:33:22,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:33:22,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:33:22,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:33:22,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:33:22,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:33:22,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:33:22,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:33:22,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:33:22,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:33:22,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:33:22,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:33:22,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:33:22,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:33:22,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:33:22,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:33:22,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:33:22,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:33:22,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:33:22,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:33:22,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:33:22,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:33:22,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:33:22,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:33:22,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:33:22,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:33:22,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:33:22,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:33:22,293 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:33:22,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:33:22,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:33:22,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:33:22,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:33:22,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:33:22,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:33:22,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:33:22,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:33:22,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:33:22,296 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:33:22,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:33:22,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:33:22,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:33:22,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:33:22,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:33:22,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:33:22,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:33:22,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:33:22,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:33:22,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:33:22,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:33:22,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:33:22,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:33:22,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:33:22,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:33:22,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2021-12-19 15:33:22,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:33:22,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:33:22,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:33:22,586 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:33:22,586 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:33:22,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-12-19 15:33:22,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c2bebca/a603c15b93e547f6b78e7ab833961a04/FLAG9cfa19eee [2021-12-19 15:33:23,148 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:33:23,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2021-12-19 15:33:23,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c2bebca/a603c15b93e547f6b78e7ab833961a04/FLAG9cfa19eee [2021-12-19 15:33:23,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c2bebca/a603c15b93e547f6b78e7ab833961a04 [2021-12-19 15:33:23,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:33:23,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:33:23,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:33:23,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:33:23,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:33:23,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:33:23" (1/1) ... [2021-12-19 15:33:23,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c500b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:23, skipping insertion in model container [2021-12-19 15:33:23,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:33:23" (1/1) ... [2021-12-19 15:33:23,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:33:23,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:33:23,804 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_BER_test1-2.i[33021,33034] [2021-12-19 15:33:23,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:33:23,882 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:33:23,919 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_BER_test1-2.i[33021,33034] [2021-12-19 15:33:23,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:33:24,010 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:33:24,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24 WrapperNode [2021-12-19 15:33:24,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:33:24,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:33:24,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:33:24,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:33:24,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,086 INFO L137 Inliner]: procedures = 177, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 782 [2021-12-19 15:33:24,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:33:24,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:33:24,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:33:24,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:33:24,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:33:24,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:33:24,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:33:24,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:33:24,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (1/1) ... [2021-12-19 15:33:24,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:33:24,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:24,243 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) [2021-12-19 15:33:24,264 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 [2021-12-19 15:33:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-19 15:33:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-19 15:33:24,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-19 15:33:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-19 15:33:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-19 15:33:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-19 15:33:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-19 15:33:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:33:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-19 15:33:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-19 15:33:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-19 15:33:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-19 15:33:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:33:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:33:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:33:24,515 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:33:24,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:33:25,210 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:33:25,217 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:33:25,217 INFO L301 CfgBuilder]: Removed 40 assume(true) statements. [2021-12-19 15:33:25,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:33:25 BoogieIcfgContainer [2021-12-19 15:33:25,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:33:25,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:33:25,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:33:25,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:33:25,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:33:23" (1/3) ... [2021-12-19 15:33:25,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7acf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:33:25, skipping insertion in model container [2021-12-19 15:33:25,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:33:24" (2/3) ... [2021-12-19 15:33:25,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7acf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:33:25, skipping insertion in model container [2021-12-19 15:33:25,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:33:25" (3/3) ... [2021-12-19 15:33:25,227 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-2.i [2021-12-19 15:33:25,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:33:25,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-19 15:33:25,292 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:33:25,297 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=FINITE_AUTOMATA, 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 [2021-12-19 15:33:25,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-19 15:33:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 161 states have internal predecessors, (244), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-19 15:33:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:33:25,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:25,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:33:25,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:25,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1126635289, now seen corresponding path program 1 times [2021-12-19 15:33:25,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:25,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580162915] [2021-12-19 15:33:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:25,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:25,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:25,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580162915] [2021-12-19 15:33:25,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580162915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:25,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:25,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:33:25,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498692233] [2021-12-19 15:33:25,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:25,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:33:25,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:33:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:33:25,564 INFO L87 Difference]: Start difference. First operand has 167 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 161 states have internal predecessors, (244), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-19 15:33:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:25,681 INFO L93 Difference]: Finished difference Result 424 states and 705 transitions. [2021-12-19 15:33:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:33:25,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-19 15:33:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:25,703 INFO L225 Difference]: With dead ends: 424 [2021-12-19 15:33:25,703 INFO L226 Difference]: Without dead ends: 226 [2021-12-19 15:33:25,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:33:25,720 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 113 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:25,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 466 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-19 15:33:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 137. [2021-12-19 15:33:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.3504273504273505) internal successors, (158), 131 states have internal predecessors, (158), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-19 15:33:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2021-12-19 15:33:25,787 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 6 [2021-12-19 15:33:25,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:25,788 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2021-12-19 15:33:25,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-19 15:33:25,789 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2021-12-19 15:33:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-19 15:33:25,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:25,793 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] [2021-12-19 15:33:25,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:33:25,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:25,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1116651610, now seen corresponding path program 1 times [2021-12-19 15:33:25,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:25,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216127233] [2021-12-19 15:33:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:25,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:25,944 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:25,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132681282] [2021-12-19 15:33:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:25,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:25,947 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) [2021-12-19 15:33:25,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 15:33:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:26,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:33:26,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:26,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:26,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:26,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216127233] [2021-12-19 15:33:26,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:26,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132681282] [2021-12-19 15:33:26,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132681282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:26,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:26,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:33:26,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921543729] [2021-12-19 15:33:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:26,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:33:26,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:33:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:33:26,622 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-19 15:33:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:26,687 INFO L93 Difference]: Finished difference Result 289 states and 393 transitions. [2021-12-19 15:33:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:33:26,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-12-19 15:33:26,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:26,690 INFO L225 Difference]: With dead ends: 289 [2021-12-19 15:33:26,691 INFO L226 Difference]: Without dead ends: 158 [2021-12-19 15:33:26,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:33:26,698 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 305 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 [2021-12-19 15:33:26,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 305 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:33:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-19 15:33:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-12-19 15:33:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.2992700729927007) internal successors, (178), 151 states have internal predecessors, (178), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-19 15:33:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2021-12-19 15:33:26,718 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 56 [2021-12-19 15:33:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:26,718 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2021-12-19 15:33:26,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-19 15:33:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2021-12-19 15:33:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-19 15:33:26,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:26,723 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] [2021-12-19 15:33:26,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:26,935 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 [2021-12-19 15:33:26,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411224, now seen corresponding path program 1 times [2021-12-19 15:33:26,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:26,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412899685] [2021-12-19 15:33:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:26,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:27,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:27,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499959596] [2021-12-19 15:33:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:27,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:27,023 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) [2021-12-19 15:33:27,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 15:33:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:27,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:33:27,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:27,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:27,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:27,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412899685] [2021-12-19 15:33:27,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499959596] [2021-12-19 15:33:27,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499959596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:27,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:27,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:33:27,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038131244] [2021-12-19 15:33:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:27,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:33:27,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:33:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:33:27,725 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-19 15:33:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:27,791 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2021-12-19 15:33:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:33:27,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-12-19 15:33:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:27,792 INFO L225 Difference]: With dead ends: 299 [2021-12-19 15:33:27,792 INFO L226 Difference]: Without dead ends: 148 [2021-12-19 15:33:27,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:33:27,794 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 135 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 339 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 [2021-12-19 15:33:27,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 339 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-19 15:33:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2021-12-19 15:33:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 137 states have internal predecessors, (157), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-19 15:33:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2021-12-19 15:33:27,802 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 56 [2021-12-19 15:33:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:27,803 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2021-12-19 15:33:27,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-19 15:33:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2021-12-19 15:33:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-19 15:33:27,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:27,804 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] [2021-12-19 15:33:27,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:28,019 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 [2021-12-19 15:33:28,020 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 632524954, now seen corresponding path program 1 times [2021-12-19 15:33:28,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:28,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990229299] [2021-12-19 15:33:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:28,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:28,116 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:28,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404716086] [2021-12-19 15:33:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:28,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:28,122 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) [2021-12-19 15:33:28,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 15:33:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:28,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:33:28,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:28,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:28,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:28,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990229299] [2021-12-19 15:33:28,840 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:28,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404716086] [2021-12-19 15:33:28,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404716086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:28,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:28,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:33:28,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572218279] [2021-12-19 15:33:28,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:28,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:33:28,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:33:28,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:33:28,842 INFO L87 Difference]: Start difference. First operand 143 states and 183 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-19 15:33:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:28,883 INFO L93 Difference]: Finished difference Result 238 states and 298 transitions. [2021-12-19 15:33:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:33:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-12-19 15:33:28,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:28,885 INFO L225 Difference]: With dead ends: 238 [2021-12-19 15:33:28,885 INFO L226 Difference]: Without dead ends: 237 [2021-12-19 15:33:28,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:33:28,886 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:28,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 498 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-19 15:33:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2021-12-19 15:33:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 212 states have (on average 1.240566037735849) internal successors, (263), 226 states have internal predecessors, (263), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:33:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 295 transitions. [2021-12-19 15:33:28,895 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 295 transitions. Word has length 56 [2021-12-19 15:33:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:28,896 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 295 transitions. [2021-12-19 15:33:28,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-12-19 15:33:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 295 transitions. [2021-12-19 15:33:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-19 15:33:28,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:28,897 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] [2021-12-19 15:33:28,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:29,111 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 [2021-12-19 15:33:29,112 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1866562491, now seen corresponding path program 1 times [2021-12-19 15:33:29,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:29,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535000142] [2021-12-19 15:33:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:29,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:29,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:29,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941468145] [2021-12-19 15:33:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:29,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:29,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:29,228 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) [2021-12-19 15:33:29,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 15:33:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:29,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:33:29,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:30,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:30,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:30,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535000142] [2021-12-19 15:33:30,050 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:30,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941468145] [2021-12-19 15:33:30,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941468145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:30,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:30,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:33:30,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354291327] [2021-12-19 15:33:30,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:30,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:33:30,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:30,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:33:30,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:33:30,053 INFO L87 Difference]: Start difference. First operand 235 states and 295 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-12-19 15:33:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:30,079 INFO L93 Difference]: Finished difference Result 235 states and 295 transitions. [2021-12-19 15:33:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:33:30,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-12-19 15:33:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:30,081 INFO L225 Difference]: With dead ends: 235 [2021-12-19 15:33:30,081 INFO L226 Difference]: Without dead ends: 234 [2021-12-19 15:33:30,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:33:30,082 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:30,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 344 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-19 15:33:30,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-12-19 15:33:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 212 states have (on average 1.2358490566037736) internal successors, (262), 225 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:33:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 294 transitions. [2021-12-19 15:33:30,093 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 294 transitions. Word has length 57 [2021-12-19 15:33:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:30,094 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 294 transitions. [2021-12-19 15:33:30,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-12-19 15:33:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 294 transitions. [2021-12-19 15:33:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-19 15:33:30,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:30,095 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] [2021-12-19 15:33:30,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:30,303 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 [2021-12-19 15:33:30,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1237589276, now seen corresponding path program 1 times [2021-12-19 15:33:30,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:30,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080440081] [2021-12-19 15:33:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:30,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:30,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:30,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862963555] [2021-12-19 15:33:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:30,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:30,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:30,377 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) [2021-12-19 15:33:30,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 15:33:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:31,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 15:33:31,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:31,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:33:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:31,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:31,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080440081] [2021-12-19 15:33:31,435 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:31,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862963555] [2021-12-19 15:33:31,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862963555] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:33:31,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:33:31,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-19 15:33:31,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544363862] [2021-12-19 15:33:31,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:33:31,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 15:33:31,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 15:33:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:33:31,437 INFO L87 Difference]: Start difference. First operand 234 states and 294 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2021-12-19 15:33:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:31,527 INFO L93 Difference]: Finished difference Result 367 states and 469 transitions. [2021-12-19 15:33:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:33:31,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 61 [2021-12-19 15:33:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:31,531 INFO L225 Difference]: With dead ends: 367 [2021-12-19 15:33:31,531 INFO L226 Difference]: Without dead ends: 333 [2021-12-19 15:33:31,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:33:31,534 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 313 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:31,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 940 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:33:31,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-19 15:33:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-19 15:33:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 321 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-19 15:33:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 414 transitions. [2021-12-19 15:33:31,553 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 414 transitions. Word has length 61 [2021-12-19 15:33:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:31,555 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 414 transitions. [2021-12-19 15:33:31,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2021-12-19 15:33:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 414 transitions. [2021-12-19 15:33:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-19 15:33:31,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:31,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:31,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:31,775 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 [2021-12-19 15:33:31,776 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1237285228, now seen corresponding path program 1 times [2021-12-19 15:33:31,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:31,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125234006] [2021-12-19 15:33:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:31,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:31,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:31,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454008211] [2021-12-19 15:33:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:31,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:31,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:31,849 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) [2021-12-19 15:33:31,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 15:33:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:32,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:33:32,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:33:32,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:32,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:32,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125234006] [2021-12-19 15:33:32,803 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:32,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454008211] [2021-12-19 15:33:32,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454008211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:32,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:32,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:33:32,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956845130] [2021-12-19 15:33:32,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:32,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:33:32,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:32,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:33:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:33:32,805 INFO L87 Difference]: Start difference. First operand 333 states and 414 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-12-19 15:33:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:32,859 INFO L93 Difference]: Finished difference Result 606 states and 760 transitions. [2021-12-19 15:33:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:33:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-12-19 15:33:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:32,861 INFO L225 Difference]: With dead ends: 606 [2021-12-19 15:33:32,861 INFO L226 Difference]: Without dead ends: 331 [2021-12-19 15:33:32,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:33:32,863 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 15 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:32,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-19 15:33:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-19 15:33:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 306 states have (on average 1.2189542483660132) internal successors, (373), 319 states have internal predecessors, (373), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-19 15:33:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2021-12-19 15:33:32,873 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 61 [2021-12-19 15:33:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:32,874 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2021-12-19 15:33:32,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-12-19 15:33:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2021-12-19 15:33:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-19 15:33:32,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:32,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:32,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:33,091 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 [2021-12-19 15:33:33,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:33,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash 233271851, now seen corresponding path program 1 times [2021-12-19 15:33:33,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:33,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188455101] [2021-12-19 15:33:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:33,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:33,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:33,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583384841] [2021-12-19 15:33:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:33,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:33,124 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) [2021-12-19 15:33:33,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 15:33:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:33,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 15:33:33,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:33:33,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:33,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:33,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188455101] [2021-12-19 15:33:33,881 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:33,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583384841] [2021-12-19 15:33:33,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583384841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:33,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:33,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:33:33,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634526540] [2021-12-19 15:33:33,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:33,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:33:33,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:33:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:33:33,884 INFO L87 Difference]: Start difference. First operand 331 states and 411 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:33,917 INFO L93 Difference]: Finished difference Result 613 states and 776 transitions. [2021-12-19 15:33:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:33:33,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2021-12-19 15:33:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:33,920 INFO L225 Difference]: With dead ends: 613 [2021-12-19 15:33:33,920 INFO L226 Difference]: Without dead ends: 334 [2021-12-19 15:33:33,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:33:33,921 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:33,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 503 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-19 15:33:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2021-12-19 15:33:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 322 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-12-19 15:33:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 417 transitions. [2021-12-19 15:33:33,935 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 417 transitions. Word has length 76 [2021-12-19 15:33:33,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:33,936 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 417 transitions. [2021-12-19 15:33:33,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 417 transitions. [2021-12-19 15:33:33,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-19 15:33:33,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:33,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:33,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:34,151 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 [2021-12-19 15:33:34,152 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash -158908919, now seen corresponding path program 1 times [2021-12-19 15:33:34,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:34,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339943570] [2021-12-19 15:33:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:34,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:34,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:34,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476533278] [2021-12-19 15:33:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:34,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:34,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:34,188 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) [2021-12-19 15:33:34,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 15:33:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:34,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 15:33:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-19 15:33:35,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:33:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-19 15:33:35,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:35,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339943570] [2021-12-19 15:33:35,292 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:35,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476533278] [2021-12-19 15:33:35,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476533278] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:33:35,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:33:35,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-19 15:33:35,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723915680] [2021-12-19 15:33:35,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:33:35,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 15:33:35,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 15:33:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:33:35,293 INFO L87 Difference]: Start difference. First operand 334 states and 417 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-19 15:33:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:35,407 INFO L93 Difference]: Finished difference Result 627 states and 806 transitions. [2021-12-19 15:33:35,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:33:35,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2021-12-19 15:33:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:35,410 INFO L225 Difference]: With dead ends: 627 [2021-12-19 15:33:35,410 INFO L226 Difference]: Without dead ends: 343 [2021-12-19 15:33:35,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-19 15:33:35,411 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 20 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:35,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 825 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-19 15:33:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-12-19 15:33:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 316 states have (on average 1.2278481012658229) internal successors, (388), 330 states have internal predecessors, (388), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (25), 10 states have call predecessors, (25), 19 states have call successors, (25) [2021-12-19 15:33:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 432 transitions. [2021-12-19 15:33:35,422 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 432 transitions. Word has length 78 [2021-12-19 15:33:35,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:35,422 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 432 transitions. [2021-12-19 15:33:35,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-19 15:33:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 432 transitions. [2021-12-19 15:33:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-19 15:33:35,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:35,423 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:35,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:35,635 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 [2021-12-19 15:33:35,636 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1475657579, now seen corresponding path program 2 times [2021-12-19 15:33:35,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:35,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685998481] [2021-12-19 15:33:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:35,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:35,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:35,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307349096] [2021-12-19 15:33:35,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:33:35,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:35,674 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) [2021-12-19 15:33:35,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 15:33:36,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:33:36,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:33:36,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-19 15:33:36,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-19 15:33:36,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:33:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-19 15:33:36,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:36,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685998481] [2021-12-19 15:33:36,814 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:36,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307349096] [2021-12-19 15:33:36,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307349096] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:33:36,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:33:36,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-12-19 15:33:36,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457268258] [2021-12-19 15:33:36,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:33:36,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-19 15:33:36,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 15:33:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:33:36,816 INFO L87 Difference]: Start difference. First operand 343 states and 432 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:37,145 INFO L93 Difference]: Finished difference Result 675 states and 864 transitions. [2021-12-19 15:33:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 15:33:37,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2021-12-19 15:33:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:37,147 INFO L225 Difference]: With dead ends: 675 [2021-12-19 15:33:37,147 INFO L226 Difference]: Without dead ends: 340 [2021-12-19 15:33:37,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-12-19 15:33:37,149 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 158 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:37,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 664 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:33:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-19 15:33:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2021-12-19 15:33:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 311 states have (on average 1.2282958199356913) internal successors, (382), 325 states have internal predecessors, (382), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-12-19 15:33:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 423 transitions. [2021-12-19 15:33:37,159 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 423 transitions. Word has length 82 [2021-12-19 15:33:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:37,160 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 423 transitions. [2021-12-19 15:33:37,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 423 transitions. [2021-12-19 15:33:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-19 15:33:37,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:37,161 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:37,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:37,379 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 [2021-12-19 15:33:37,379 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash -291979797, now seen corresponding path program 3 times [2021-12-19 15:33:37,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:37,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584701040] [2021-12-19 15:33:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:37,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:37,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:37,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107016805] [2021-12-19 15:33:37,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:33:37,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:37,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:37,434 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) [2021-12-19 15:33:37,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 15:33:38,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:33:38,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:33:38,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:33:38,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-19 15:33:38,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:38,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:38,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584701040] [2021-12-19 15:33:38,324 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:38,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107016805] [2021-12-19 15:33:38,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107016805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:38,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:38,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:33:38,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238670536] [2021-12-19 15:33:38,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:38,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:33:38,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:33:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:33:38,327 INFO L87 Difference]: Start difference. First operand 338 states and 423 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:38,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:38,389 INFO L93 Difference]: Finished difference Result 338 states and 423 transitions. [2021-12-19 15:33:38,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:33:38,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2021-12-19 15:33:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:38,392 INFO L225 Difference]: With dead ends: 338 [2021-12-19 15:33:38,392 INFO L226 Difference]: Without dead ends: 337 [2021-12-19 15:33:38,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:33:38,393 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 270 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:38,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 677 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-19 15:33:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2021-12-19 15:33:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 311 states have (on average 1.2218649517684887) internal successors, (380), 324 states have internal predecessors, (380), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-12-19 15:33:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 421 transitions. [2021-12-19 15:33:38,404 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 421 transitions. Word has length 86 [2021-12-19 15:33:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:38,404 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 421 transitions. [2021-12-19 15:33:38,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 421 transitions. [2021-12-19 15:33:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-19 15:33:38,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:38,408 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:38,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:38,633 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 [2021-12-19 15:33:38,633 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -644780133, now seen corresponding path program 1 times [2021-12-19 15:33:38,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:38,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499223] [2021-12-19 15:33:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:38,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:38,764 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:38,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242186219] [2021-12-19 15:33:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:38,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:38,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:38,766 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) [2021-12-19 15:33:38,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 15:33:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:40,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 15:33:40,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-19 15:33:40,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:33:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-19 15:33:40,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:40,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499223] [2021-12-19 15:33:40,828 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242186219] [2021-12-19 15:33:40,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242186219] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:33:40,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:33:40,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-19 15:33:40,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964666332] [2021-12-19 15:33:40,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:33:40,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-19 15:33:40,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-19 15:33:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:33:40,831 INFO L87 Difference]: Start difference. First operand 337 states and 421 transitions. Second operand has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:40,988 INFO L93 Difference]: Finished difference Result 460 states and 586 transitions. [2021-12-19 15:33:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:33:40,989 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 191 [2021-12-19 15:33:40,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:40,991 INFO L225 Difference]: With dead ends: 460 [2021-12-19 15:33:40,991 INFO L226 Difference]: Without dead ends: 459 [2021-12-19 15:33:40,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-19 15:33:40,992 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 470 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:40,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 793 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:33:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-19 15:33:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 336. [2021-12-19 15:33:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 311 states have (on average 1.2186495176848875) internal successors, (379), 323 states have internal predecessors, (379), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-12-19 15:33:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 420 transitions. [2021-12-19 15:33:41,006 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 420 transitions. Word has length 191 [2021-12-19 15:33:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:41,007 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 420 transitions. [2021-12-19 15:33:41,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 420 transitions. [2021-12-19 15:33:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-19 15:33:41,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:41,010 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:41,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:41,213 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 [2021-12-19 15:33:41,213 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash 40793787, now seen corresponding path program 1 times [2021-12-19 15:33:41,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:41,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098877859] [2021-12-19 15:33:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:41,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:41,406 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55021305] [2021-12-19 15:33:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:41,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:41,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:41,416 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) [2021-12-19 15:33:41,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 15:33:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:42,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 3756 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-19 15:33:42,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-19 15:33:43,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:33:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-19 15:33:43,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:43,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098877859] [2021-12-19 15:33:43,650 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:43,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55021305] [2021-12-19 15:33:43,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55021305] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:33:43,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:33:43,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-19 15:33:43,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271699456] [2021-12-19 15:33:43,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:33:43,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-19 15:33:43,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-19 15:33:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-19 15:33:43,653 INFO L87 Difference]: Start difference. First operand 336 states and 420 transitions. Second operand has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:43,837 INFO L93 Difference]: Finished difference Result 745 states and 932 transitions. [2021-12-19 15:33:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 15:33:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 196 [2021-12-19 15:33:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:43,843 INFO L225 Difference]: With dead ends: 745 [2021-12-19 15:33:43,843 INFO L226 Difference]: Without dead ends: 712 [2021-12-19 15:33:43,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-19 15:33:43,845 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 909 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:43,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 1865 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:33:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-19 15:33:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2021-12-19 15:33:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 675 states have (on average 1.1955555555555555) internal successors, (807), 687 states have internal predecessors, (807), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38) [2021-12-19 15:33:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 876 transitions. [2021-12-19 15:33:43,871 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 876 transitions. Word has length 196 [2021-12-19 15:33:43,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:43,872 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 876 transitions. [2021-12-19 15:33:43,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:43,872 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 876 transitions. [2021-12-19 15:33:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-12-19 15:33:43,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:43,878 INFO L514 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:43,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:44,104 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 [2021-12-19 15:33:44,104 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1571833605, now seen corresponding path program 2 times [2021-12-19 15:33:44,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:44,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928714272] [2021-12-19 15:33:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:44,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:44,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:44,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419588135] [2021-12-19 15:33:44,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:33:44,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:44,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:44,473 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) [2021-12-19 15:33:44,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 15:33:46,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 15:33:46,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:33:46,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:33:46,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2021-12-19 15:33:46,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:46,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928714272] [2021-12-19 15:33:46,849 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:46,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419588135] [2021-12-19 15:33:46,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419588135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:46,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:46,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:33:46,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815411264] [2021-12-19 15:33:46,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:46,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:33:46,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:33:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:33:46,852 INFO L87 Difference]: Start difference. First operand 712 states and 876 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:46,945 INFO L93 Difference]: Finished difference Result 738 states and 922 transitions. [2021-12-19 15:33:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:33:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 416 [2021-12-19 15:33:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:46,951 INFO L225 Difference]: With dead ends: 738 [2021-12-19 15:33:46,951 INFO L226 Difference]: Without dead ends: 737 [2021-12-19 15:33:46,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:33:46,952 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:46,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 364 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-12-19 15:33:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 714. [2021-12-19 15:33:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 677 states have (on average 1.1949778434268834) internal successors, (809), 689 states have internal predecessors, (809), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38) [2021-12-19 15:33:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 878 transitions. [2021-12-19 15:33:46,974 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 878 transitions. Word has length 416 [2021-12-19 15:33:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:46,975 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 878 transitions. [2021-12-19 15:33:46,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 878 transitions. [2021-12-19 15:33:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-12-19 15:33:46,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:46,982 INFO L514 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:47,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:47,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-19 15:33:47,196 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1482201068, now seen corresponding path program 1 times [2021-12-19 15:33:47,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227435202] [2021-12-19 15:33:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:47,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:47,801 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:47,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575136210] [2021-12-19 15:33:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:47,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:47,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:47,845 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:33:47,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 15:33:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:33:51,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 9649 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-19 15:33:51,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-19 15:33:52,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:33:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-19 15:33:52,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227435202] [2021-12-19 15:33:52,813 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575136210] [2021-12-19 15:33:52,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575136210] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:33:52,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:33:52,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-12-19 15:33:52,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619610022] [2021-12-19 15:33:52,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:33:52,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-19 15:33:52,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-19 15:33:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-12-19 15:33:52,815 INFO L87 Difference]: Start difference. First operand 714 states and 878 transitions. Second operand has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:53,100 INFO L93 Difference]: Finished difference Result 1031 states and 1277 transitions. [2021-12-19 15:33:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-19 15:33:53,101 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 417 [2021-12-19 15:33:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:53,107 INFO L225 Difference]: With dead ends: 1031 [2021-12-19 15:33:53,108 INFO L226 Difference]: Without dead ends: 996 [2021-12-19 15:33:53,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-19 15:33:53,111 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 1359 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:53,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 2506 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:33:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-12-19 15:33:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2021-12-19 15:33:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 950 states have (on average 1.1894736842105262) internal successors, (1130), 962 states have internal predecessors, (1130), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2021-12-19 15:33:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1220 transitions. [2021-12-19 15:33:53,136 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1220 transitions. Word has length 417 [2021-12-19 15:33:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:53,139 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1220 transitions. [2021-12-19 15:33:53,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:33:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1220 transitions. [2021-12-19 15:33:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2021-12-19 15:33:53,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:53,150 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, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:53,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:53,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:53,363 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:53,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1917544725, now seen corresponding path program 2 times [2021-12-19 15:33:53,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:53,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983387629] [2021-12-19 15:33:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:53,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:53,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:53,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902778555] [2021-12-19 15:33:53,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:33:53,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:53,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:53,895 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:33:53,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-19 15:33:56,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 15:33:56,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:33:56,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:33:56,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:33:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:33:57,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:33:57,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:33:57,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983387629] [2021-12-19 15:33:57,713 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:33:57,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902778555] [2021-12-19 15:33:57,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902778555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:33:57,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:33:57,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:33:57,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830187218] [2021-12-19 15:33:57,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:33:57,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:33:57,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:33:57,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:33:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:33:57,714 INFO L87 Difference]: Start difference. First operand 996 states and 1220 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:33:57,780 INFO L93 Difference]: Finished difference Result 996 states and 1220 transitions. [2021-12-19 15:33:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:33:57,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 582 [2021-12-19 15:33:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:33:57,785 INFO L225 Difference]: With dead ends: 996 [2021-12-19 15:33:57,785 INFO L226 Difference]: Without dead ends: 995 [2021-12-19 15:33:57,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:33:57,786 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 100 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:33:57,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 272 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:33:57,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2021-12-19 15:33:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2021-12-19 15:33:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 950 states have (on average 1.188421052631579) internal successors, (1129), 961 states have internal predecessors, (1129), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2021-12-19 15:33:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1219 transitions. [2021-12-19 15:33:57,811 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1219 transitions. Word has length 582 [2021-12-19 15:33:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:33:57,812 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1219 transitions. [2021-12-19 15:33:57,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:33:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1219 transitions. [2021-12-19 15:33:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2021-12-19 15:33:57,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:33:57,824 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, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:33:57,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-19 15:33:58,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-19 15:33:58,051 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:33:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:33:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash -918970851, now seen corresponding path program 1 times [2021-12-19 15:33:58,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:33:58,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579476891] [2021-12-19 15:33:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:58,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:33:58,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:33:58,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132567727] [2021-12-19 15:33:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:33:58,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:33:58,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:33:58,731 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:33:58,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-19 15:34:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:34:04,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 14103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:34:04,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:34:05,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:34:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:34:05,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:05,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579476891] [2021-12-19 15:34:05,953 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:05,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132567727] [2021-12-19 15:34:05,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132567727] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:34:05,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:34:05,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-19 15:34:05,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979136151] [2021-12-19 15:34:05,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:34:05,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:34:05,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:34:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:34:05,956 INFO L87 Difference]: Start difference. First operand 995 states and 1219 transitions. Second operand has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-19 15:34:06,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:06,238 INFO L93 Difference]: Finished difference Result 1087 states and 1370 transitions. [2021-12-19 15:34:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-19 15:34:06,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 593 [2021-12-19 15:34:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:06,250 INFO L225 Difference]: With dead ends: 1087 [2021-12-19 15:34:06,251 INFO L226 Difference]: Without dead ends: 1086 [2021-12-19 15:34:06,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-12-19 15:34:06,252 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 490 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:06,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 547 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 15:34:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-12-19 15:34:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1085. [2021-12-19 15:34:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1007 states have (on average 1.2075471698113207) internal successors, (1216), 1048 states have internal predecessors, (1216), 70 states have call successors, (70), 6 states have call predecessors, (70), 7 states have return successors, (80), 34 states have call predecessors, (80), 70 states have call successors, (80) [2021-12-19 15:34:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1366 transitions. [2021-12-19 15:34:06,289 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1366 transitions. Word has length 593 [2021-12-19 15:34:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:06,290 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 1366 transitions. [2021-12-19 15:34:06,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-19 15:34:06,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1366 transitions. [2021-12-19 15:34:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2021-12-19 15:34:06,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:06,297 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, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:06,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-19 15:34:06,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-19 15:34:06,519 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:34:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1040347622, now seen corresponding path program 2 times [2021-12-19 15:34:06,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:06,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970374793] [2021-12-19 15:34:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:06,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:07,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:07,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499041168] [2021-12-19 15:34:07,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:34:07,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:07,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:07,124 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:34:07,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-19 15:34:13,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:34:13,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:34:13,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 14211 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-19 15:34:13,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:34:14,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:34:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2021-12-19 15:34:15,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:15,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970374793] [2021-12-19 15:34:15,235 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:15,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499041168] [2021-12-19 15:34:15,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499041168] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:34:15,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:34:15,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-12-19 15:34:15,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574573091] [2021-12-19 15:34:15,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:34:15,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-19 15:34:15,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-19 15:34:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-19 15:34:15,238 INFO L87 Difference]: Start difference. First operand 1085 states and 1366 transitions. Second operand has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-19 15:34:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:16,218 INFO L93 Difference]: Finished difference Result 1267 states and 1667 transitions. [2021-12-19 15:34:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-19 15:34:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 629 [2021-12-19 15:34:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:16,225 INFO L225 Difference]: With dead ends: 1267 [2021-12-19 15:34:16,225 INFO L226 Difference]: Without dead ends: 1266 [2021-12-19 15:34:16,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 1236 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-12-19 15:34:16,226 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1132 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:16,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 607 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-19 15:34:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-12-19 15:34:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1265. [2021-12-19 15:34:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1121 states have (on average 1.239964317573595) internal successors, (1390), 1222 states have internal predecessors, (1390), 130 states have call successors, (130), 12 states have call predecessors, (130), 13 states have return successors, (140), 40 states have call predecessors, (140), 130 states have call successors, (140) [2021-12-19 15:34:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1660 transitions. [2021-12-19 15:34:16,275 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1660 transitions. Word has length 629 [2021-12-19 15:34:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:16,276 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1660 transitions. [2021-12-19 15:34:16,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-12-19 15:34:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1660 transitions. [2021-12-19 15:34:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2021-12-19 15:34:16,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:16,286 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:16,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-19 15:34:16,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-19 15:34:16,512 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:34:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1251407880, now seen corresponding path program 3 times [2021-12-19 15:34:16,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:16,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101372741] [2021-12-19 15:34:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:16,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:17,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:17,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397608742] [2021-12-19 15:34:17,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:34:17,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:17,136 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:34:17,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-19 15:34:22,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:34:22,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:34:22,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:34:22,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3096 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 2995 trivial. 0 not checked. [2021-12-19 15:34:23,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:34:23,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:23,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101372741] [2021-12-19 15:34:23,058 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:23,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397608742] [2021-12-19 15:34:23,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397608742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:34:23,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:34:23,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:34:23,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720829858] [2021-12-19 15:34:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:34:23,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:34:23,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:34:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:34:23,060 INFO L87 Difference]: Start difference. First operand 1265 states and 1660 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:34:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:23,197 INFO L93 Difference]: Finished difference Result 1582 states and 2147 transitions. [2021-12-19 15:34:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:34:23,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 701 [2021-12-19 15:34:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:23,204 INFO L225 Difference]: With dead ends: 1582 [2021-12-19 15:34:23,205 INFO L226 Difference]: Without dead ends: 1581 [2021-12-19 15:34:23,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:34:23,206 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 264 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:23,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 320 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:34:23,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-12-19 15:34:23,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1508. [2021-12-19 15:34:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1292 states have (on average 1.2778637770897834) internal successors, (1651), 1447 states have internal predecessors, (1651), 193 states have call successors, (193), 21 states have call predecessors, (193), 22 states have return successors, (203), 49 states have call predecessors, (203), 193 states have call successors, (203) [2021-12-19 15:34:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2047 transitions. [2021-12-19 15:34:23,275 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2047 transitions. Word has length 701 [2021-12-19 15:34:23,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:23,276 INFO L470 AbstractCegarLoop]: Abstraction has 1508 states and 2047 transitions. [2021-12-19 15:34:23,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:34:23,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2047 transitions. [2021-12-19 15:34:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2021-12-19 15:34:23,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:23,284 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:23,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-19 15:34:23,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:23,507 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:34:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1468623001, now seen corresponding path program 1 times [2021-12-19 15:34:23,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:23,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117103289] [2021-12-19 15:34:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:23,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:24,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:24,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929793945] [2021-12-19 15:34:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:24,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:24,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:24,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:34:24,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-19 15:34:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:34:31,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 14429 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-19 15:34:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:34:32,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:34:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 2716 trivial. 0 not checked. [2021-12-19 15:34:34,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117103289] [2021-12-19 15:34:34,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929793945] [2021-12-19 15:34:34,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929793945] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:34:34,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:34:34,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-12-19 15:34:34,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866155331] [2021-12-19 15:34:34,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:34:34,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-19 15:34:34,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-19 15:34:34,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-19 15:34:34,043 INFO L87 Difference]: Start difference. First operand 1508 states and 2047 transitions. Second operand has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2021-12-19 15:34:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:37,104 INFO L93 Difference]: Finished difference Result 2225 states and 3215 transitions. [2021-12-19 15:34:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-19 15:34:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 702 [2021-12-19 15:34:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:37,114 INFO L225 Difference]: With dead ends: 2225 [2021-12-19 15:34:37,114 INFO L226 Difference]: Without dead ends: 2224 [2021-12-19 15:34:37,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1445 GetRequests, 1358 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-12-19 15:34:37,118 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 2857 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 4028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:37,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2867 Valid, 1344 Invalid, 4028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-19 15:34:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-12-19 15:34:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2204. [2021-12-19 15:34:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1748 states have (on average 1.3426773455377574) internal successors, (2347), 2107 states have internal predecessors, (2347), 409 states have call successors, (409), 45 states have call predecessors, (409), 46 states have return successors, (419), 73 states have call predecessors, (419), 409 states have call successors, (419) [2021-12-19 15:34:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3175 transitions. [2021-12-19 15:34:37,214 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3175 transitions. Word has length 702 [2021-12-19 15:34:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:37,216 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 3175 transitions. [2021-12-19 15:34:37,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2021-12-19 15:34:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3175 transitions. [2021-12-19 15:34:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2021-12-19 15:34:37,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:37,229 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:37,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-19 15:34:37,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:37,455 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:34:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 439764725, now seen corresponding path program 2 times [2021-12-19 15:34:37,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:37,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816090662] [2021-12-19 15:34:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:37,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:37,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:37,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999038344] [2021-12-19 15:34:37,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:34:37,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:37,997 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:34:37,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-19 15:34:45,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:34:45,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:34:45,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 14861 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-19 15:34:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5331 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:34:47,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:34:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5331 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 3460 trivial. 0 not checked. [2021-12-19 15:34:50,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:50,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816090662] [2021-12-19 15:34:50,592 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:50,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999038344] [2021-12-19 15:34:50,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999038344] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:34:50,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:34:50,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-12-19 15:34:50,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830652155] [2021-12-19 15:34:50,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:34:50,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-19 15:34:50,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-19 15:34:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-19 15:34:50,598 INFO L87 Difference]: Start difference. First operand 2204 states and 3175 transitions. Second operand has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2021-12-19 15:34:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:58,212 INFO L93 Difference]: Finished difference Result 3617 states and 5483 transitions. [2021-12-19 15:34:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-12-19 15:34:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) Word has length 846 [2021-12-19 15:34:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:58,230 INFO L225 Difference]: With dead ends: 3617 [2021-12-19 15:34:58,230 INFO L226 Difference]: Without dead ends: 3616 [2021-12-19 15:34:58,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1598 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-12-19 15:34:58,238 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 7196 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 5432 mSolverCounterSat, 4159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7206 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 9591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4159 IncrementalHoareTripleChecker+Valid, 5432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:58,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7206 Valid, 2038 Invalid, 9591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4159 Valid, 5432 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-19 15:34:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2021-12-19 15:34:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3596. [2021-12-19 15:34:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 2660 states have (on average 1.405639097744361) internal successors, (3739), 3427 states have internal predecessors, (3739), 841 states have call successors, (841), 93 states have call predecessors, (841), 94 states have return successors, (851), 121 states have call predecessors, (851), 841 states have call successors, (851) [2021-12-19 15:34:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5431 transitions. [2021-12-19 15:34:58,400 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5431 transitions. Word has length 846 [2021-12-19 15:34:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:58,402 INFO L470 AbstractCegarLoop]: Abstraction has 3596 states and 5431 transitions. [2021-12-19 15:34:58,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2021-12-19 15:34:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5431 transitions. [2021-12-19 15:34:58,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2021-12-19 15:34:58,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:58,424 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:58,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-19 15:34:58,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-19 15:34:58,643 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:34:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1117119571, now seen corresponding path program 3 times [2021-12-19 15:34:58,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:58,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100285022] [2021-12-19 15:34:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:58,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:59,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:59,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404420090] [2021-12-19 15:34:59,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:34:59,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:59,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:59,243 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:34:59,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-19 15:35:06,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:35:06,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:35:06,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:35:06,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15003 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 14551 trivial. 0 not checked. [2021-12-19 15:35:07,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:07,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:07,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100285022] [2021-12-19 15:35:07,554 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:07,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404420090] [2021-12-19 15:35:07,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404420090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:07,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:07,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:35:07,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719214099] [2021-12-19 15:35:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:07,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:35:07,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:35:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:35:07,556 INFO L87 Difference]: Start difference. First operand 3596 states and 5431 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:35:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:08,008 INFO L93 Difference]: Finished difference Result 6471 states and 9917 transitions. [2021-12-19 15:35:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 15:35:08,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1134 [2021-12-19 15:35:08,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:08,041 INFO L225 Difference]: With dead ends: 6471 [2021-12-19 15:35:08,041 INFO L226 Difference]: Without dead ends: 6470 [2021-12-19 15:35:08,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:35:08,046 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 179 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:08,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 413 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:35:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2021-12-19 15:35:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6007. [2021-12-19 15:35:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6007 states, 4367 states have (on average 1.4531715136249141) internal successors, (6346), 5659 states have internal predecessors, (6346), 1456 states have call successors, (1456), 182 states have call predecessors, (1456), 183 states have return successors, (1466), 210 states have call predecessors, (1466), 1456 states have call successors, (1466) [2021-12-19 15:35:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 9268 transitions. [2021-12-19 15:35:08,372 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 9268 transitions. Word has length 1134 [2021-12-19 15:35:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:08,374 INFO L470 AbstractCegarLoop]: Abstraction has 6007 states and 9268 transitions. [2021-12-19 15:35:08,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:35:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 9268 transitions. [2021-12-19 15:35:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2021-12-19 15:35:08,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:08,405 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:08,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:08,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-19 15:35:08,619 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1856992689, now seen corresponding path program 1 times [2021-12-19 15:35:08,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:08,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975037348] [2021-12-19 15:35:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:08,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:09,336 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:09,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123979033] [2021-12-19 15:35:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:09,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:09,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:09,338 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:35:09,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-19 15:35:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:18,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 15729 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-19 15:35:18,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14960 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:35:22,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:35:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14960 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 6676 trivial. 0 not checked. [2021-12-19 15:35:29,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975037348] [2021-12-19 15:35:29,843 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123979033] [2021-12-19 15:35:29,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123979033] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:35:29,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:35:29,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-12-19 15:35:29,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831443466] [2021-12-19 15:35:29,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:35:29,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-19 15:35:29,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-19 15:35:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-19 15:35:29,854 INFO L87 Difference]: Start difference. First operand 6007 states and 9268 transitions. Second operand has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) [2021-12-19 15:35:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:59,853 INFO L93 Difference]: Finished difference Result 11439 states and 18032 transitions. [2021-12-19 15:35:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-12-19 15:35:59,854 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) Word has length 1136 [2021-12-19 15:35:59,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:59,898 INFO L225 Difference]: With dead ends: 11439 [2021-12-19 15:35:59,899 INFO L226 Difference]: Without dead ends: 11438 [2021-12-19 15:35:59,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2457 GetRequests, 2082 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-12-19 15:35:59,912 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 19304 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 12138 mSolverCounterSat, 11100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19314 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 23238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11100 IncrementalHoareTripleChecker+Valid, 12138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:59,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19314 Valid, 3609 Invalid, 23238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11100 Valid, 12138 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-12-19 15:35:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11438 states. [2021-12-19 15:36:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11438 to 11383. [2021-12-19 15:36:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11383 states, 8015 states have (on average 1.48646288209607) internal successors, (11914), 10699 states have internal predecessors, (11914), 2992 states have call successors, (2992), 374 states have call predecessors, (2992), 375 states have return successors, (3002), 402 states have call predecessors, (3002), 2992 states have call successors, (3002) [2021-12-19 15:36:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11383 states to 11383 states and 17908 transitions. [2021-12-19 15:36:00,485 INFO L78 Accepts]: Start accepts. Automaton has 11383 states and 17908 transitions. Word has length 1136 [2021-12-19 15:36:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:36:00,486 INFO L470 AbstractCegarLoop]: Abstraction has 11383 states and 17908 transitions. [2021-12-19 15:36:00,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) [2021-12-19 15:36:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 11383 states and 17908 transitions. [2021-12-19 15:36:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2021-12-19 15:36:00,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:36:00,549 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:36:00,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-19 15:36:00,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:36:00,763 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:36:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:36:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1826808609, now seen corresponding path program 2 times [2021-12-19 15:36:00,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:36:00,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384113692] [2021-12-19 15:36:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:36:00,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:36:01,384 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:36:01,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055330178] [2021-12-19 15:36:01,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:36:01,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:36:01,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:36:01,385 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:36:01,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-19 15:36:11,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:36:11,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:36:12,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 17457 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-19 15:36:12,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:36:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 54992 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:36:23,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:36:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 54992 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 20020 trivial. 0 not checked. [2021-12-19 15:36:47,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:36:47,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384113692] [2021-12-19 15:36:47,931 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:36:47,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055330178] [2021-12-19 15:36:47,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055330178] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:36:47,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:36:47,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-12-19 15:36:47,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677497204] [2021-12-19 15:36:47,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:36:47,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-19 15:36:47,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:36:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-19 15:36:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-19 15:36:47,949 INFO L87 Difference]: Start difference. First operand 11383 states and 17908 transitions. Second operand has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) [2021-12-19 15:40:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:40:17,446 INFO L93 Difference]: Finished difference Result 22191 states and 35360 transitions. [2021-12-19 15:40:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-12-19 15:40:17,447 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) Word has length 1712 [2021-12-19 15:40:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:40:17,528 INFO L225 Difference]: With dead ends: 22191 [2021-12-19 15:40:17,529 INFO L226 Difference]: Without dead ends: 22190 [2021-12-19 15:40:17,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3801 GetRequests, 3042 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 72.3s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-12-19 15:40:17,584 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 43999 mSDsluCounter, 5862 mSDsCounter, 0 mSdLazyCounter, 25988 mSolverCounterSat, 27543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44009 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 53531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27543 IncrementalHoareTripleChecker+Valid, 25988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:40:17,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44009 Valid, 6015 Invalid, 53531 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27543 Valid, 25988 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2021-12-19 15:40:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22190 states. [2021-12-19 15:40:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22190 to 22135. [2021-12-19 15:40:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22135 states, 15311 states have (on average 1.5054535954542485) internal successors, (23050), 20779 states have internal predecessors, (23050), 6064 states have call successors, (6064), 758 states have call predecessors, (6064), 759 states have return successors, (6074), 786 states have call predecessors, (6074), 6064 states have call successors, (6074) [2021-12-19 15:40:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22135 states to 22135 states and 35188 transitions. [2021-12-19 15:40:18,554 INFO L78 Accepts]: Start accepts. Automaton has 22135 states and 35188 transitions. Word has length 1712 [2021-12-19 15:40:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:40:18,556 INFO L470 AbstractCegarLoop]: Abstraction has 22135 states and 35188 transitions. [2021-12-19 15:40:18,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) [2021-12-19 15:40:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 22135 states and 35188 transitions. [2021-12-19 15:40:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2865 [2021-12-19 15:40:18,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:40:18,675 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:40:18,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-19 15:40:18,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:40:18,900 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:40:18,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:40:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash -678740479, now seen corresponding path program 3 times [2021-12-19 15:40:18,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:40:18,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851030164] [2021-12-19 15:40:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:40:18,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:40:20,081 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:40:20,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513547287] [2021-12-19 15:40:20,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:40:20,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:40:20,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:40:20,083 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:40:20,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-19 15:40:28,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:40:28,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:40:28,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:40:29,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:40:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 218000 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 216107 trivial. 0 not checked. [2021-12-19 15:40:32,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:40:32,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:40:32,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851030164] [2021-12-19 15:40:32,017 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:40:32,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513547287] [2021-12-19 15:40:32,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513547287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:40:32,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:40:32,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:40:32,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659382038] [2021-12-19 15:40:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:40:32,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:40:32,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:40:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:40:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:40:32,019 INFO L87 Difference]: Start difference. First operand 22135 states and 35188 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-19 15:40:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:40:33,511 INFO L93 Difference]: Finished difference Result 45089 states and 70921 transitions. [2021-12-19 15:40:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 15:40:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 2864 [2021-12-19 15:40:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:40:33,660 INFO L225 Difference]: With dead ends: 45089 [2021-12-19 15:40:33,661 INFO L226 Difference]: Without dead ends: 45088 [2021-12-19 15:40:33,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2872 GetRequests, 2863 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:40:33,684 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 179 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:40:33,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 410 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:40:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45088 states. [2021-12-19 15:40:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45088 to 36623. [2021-12-19 15:40:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36623 states, 26049 states have (on average 1.5139928596107337) internal successors, (39438), 34136 states have internal predecessors, (39438), 9248 states have call successors, (9248), 1324 states have call predecessors, (9248), 1325 states have return successors, (9258), 1351 states have call predecessors, (9258), 9248 states have call successors, (9258) [2021-12-19 15:40:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36623 states to 36623 states and 57944 transitions. [2021-12-19 15:40:35,550 INFO L78 Accepts]: Start accepts. Automaton has 36623 states and 57944 transitions. Word has length 2864 [2021-12-19 15:40:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:40:35,553 INFO L470 AbstractCegarLoop]: Abstraction has 36623 states and 57944 transitions. [2021-12-19 15:40:35,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-19 15:40:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 36623 states and 57944 transitions. [2021-12-19 15:40:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2866 [2021-12-19 15:40:35,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:40:35,684 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:40:35,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-19 15:40:35,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-19 15:40:35,899 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:40:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:40:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -245440395, now seen corresponding path program 1 times [2021-12-19 15:40:35,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:40:35,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300465943] [2021-12-19 15:40:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:40:35,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:40:36,618 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:40:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21101733] [2021-12-19 15:40:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:40:36,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:40:36,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:40:36,619 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:40:36,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-19 15:40:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:40:48,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 20916 conjuncts, 383 conjunts are in the unsatisfiable core [2021-12-19 15:40:48,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:41:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 217431 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-12-19 15:41:26,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:42:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 217431 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 73600 trivial. 0 not checked. [2021-12-19 15:42:56,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:42:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300465943] [2021-12-19 15:42:56,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:42:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21101733] [2021-12-19 15:42:56,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21101733] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:42:56,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:42:56,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-12-19 15:42:56,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779744910] [2021-12-19 15:42:56,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:42:56,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-12-19 15:42:56,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:42:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-12-19 15:42:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-12-19 15:42:56,389 INFO L87 Difference]: Start difference. First operand 36623 states and 57944 transitions. Second operand has 766 states, 765 states have (on average 4.436601307189543) internal successors, (3394), 766 states have internal predecessors, (3394), 380 states have call successors, (382), 191 states have call predecessors, (382), 191 states have return successors, (382), 380 states have call predecessors, (382), 380 states have call successors, (382) Killed by 15