./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.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 f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:40:47,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:40:47,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:40:47,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:40:47,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:40:47,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:40:47,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:40:47,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:40:47,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:40:47,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:40:47,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:40:47,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:40:47,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:40:47,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:40:47,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:40:47,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:40:47,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:40:47,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:40:47,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:40:47,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:40:47,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:40:47,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:40:47,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:40:48,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:40:48,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:40:48,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:40:48,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:40:48,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:40:48,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:40:48,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:40:48,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:40:48,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:40:48,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:40:48,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:40:48,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:40:48,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:40:48,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:40:48,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:40:48,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:40:48,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:40:48,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:40:48,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-22 19:40:48,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:40:48,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:40:48,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:40:48,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:40:48,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:40:48,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:40:48,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:40:48,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:40:48,051 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:40:48,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:40:48,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:40:48,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:40:48,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:40:48,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:40:48,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2021-12-22 19:40:48,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:40:48,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:40:48,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:40:48,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:40:48,232 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:40:48,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-12-22 19:40:48,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9777134/b33544ad000a4e3cb6f4142fd6c41e1d/FLAGa9bb0d771 [2021-12-22 19:40:48,735 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:40:48,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-12-22 19:40:48,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9777134/b33544ad000a4e3cb6f4142fd6c41e1d/FLAGa9bb0d771 [2021-12-22 19:40:48,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9777134/b33544ad000a4e3cb6f4142fd6c41e1d [2021-12-22 19:40:48,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:40:48,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:40:48,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:40:48,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:40:48,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:40:48,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:40:48" (1/1) ... [2021-12-22 19:40:48,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d69ce64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:48, skipping insertion in model container [2021-12-22 19:40:48,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:40:48" (1/1) ... [2021-12-22 19:40:48,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:40:48,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:40:49,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-12-22 19:40:49,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:40:49,293 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:40:49,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-12-22 19:40:49,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:40:49,401 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:40:49,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49 WrapperNode [2021-12-22 19:40:49,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:40:49,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:40:49,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:40:49,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:40:49,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,482 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1451 [2021-12-22 19:40:49,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:40:49,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:40:49,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:40:49,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:40:49,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:40:49,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:40:49,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:40:49,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:40:49,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (1/1) ... [2021-12-22 19:40:49,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:40:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:40:49,567 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) [2021-12-22 19:40:49,625 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 [2021-12-22 19:40:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 19:40:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 19:40:49,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 19:40:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 19:40:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 19:40:49,644 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 19:40:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 19:40:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 19:40:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 19:40:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 19:40:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 19:40:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 19:40:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 19:40:49,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:40:49,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:40:49,872 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:40:49,875 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:40:50,790 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:40:50,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:40:50,797 INFO L299 CfgBuilder]: Removed 77 assume(true) statements. [2021-12-22 19:40:50,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:40:50 BoogieIcfgContainer [2021-12-22 19:40:50,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:40:50,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:40:50,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:40:50,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:40:50,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:40:48" (1/3) ... [2021-12-22 19:40:50,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b410ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:40:50, skipping insertion in model container [2021-12-22 19:40:50,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:40:49" (2/3) ... [2021-12-22 19:40:50,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b410ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:40:50, skipping insertion in model container [2021-12-22 19:40:50,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:40:50" (3/3) ... [2021-12-22 19:40:50,804 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-3.i [2021-12-22 19:40:50,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:40:50,808 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-22 19:40:50,839 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:40:50,843 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 [2021-12-22 19:40:50,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-22 19:40:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 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) [2021-12-22 19:40:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 19:40:50,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:40:50,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:40:50,868 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)] === [2021-12-22 19:40:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:40:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-12-22 19:40:50,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:40:50,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129364925] [2021-12-22 19:40:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:50,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:40:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:40:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:40:51,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:40:51,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129364925] [2021-12-22 19:40:51,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129364925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:40:51,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:40:51,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:40:51,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008000209] [2021-12-22 19:40:51,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:40:51,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:40:51,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:40:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:40:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:40:51,052 INFO L87 Difference]: Start difference. First operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 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) 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) [2021-12-22 19:40:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:40:51,137 INFO L93 Difference]: Finished difference Result 715 states and 1205 transitions. [2021-12-22 19:40:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:40:51,143 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 [2021-12-22 19:40:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:40:51,152 INFO L225 Difference]: With dead ends: 715 [2021-12-22 19:40:51,155 INFO L226 Difference]: Without dead ends: 392 [2021-12-22 19:40:51,158 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 [2021-12-22 19:40:51,167 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 217 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 725 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 [2021-12-22 19:40:51,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 725 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:40:51,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-22 19:40:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-12-22 19:40:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 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) [2021-12-22 19:40:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-12-22 19:40:51,240 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-12-22 19:40:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:40:51,240 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-12-22 19:40:51,241 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) [2021-12-22 19:40:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-12-22 19:40:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 19:40:51,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:40:51,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:40:51,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:40:51,246 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)] === [2021-12-22 19:40:51,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:40:51,247 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-12-22 19:40:51,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:40:51,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967250197] [2021-12-22 19:40:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:51,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:40:51,493 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:40:51,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409338643] [2021-12-22 19:40:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:51,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:40:51,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:40:51,515 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) [2021-12-22 19:40:51,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 19:40:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:40:52,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:40:52,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:40:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:40:52,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:40:52,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:40:52,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967250197] [2021-12-22 19:40:52,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:40:52,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409338643] [2021-12-22 19:40:52,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409338643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:40:52,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:40:52,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:40:52,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700320097] [2021-12-22 19:40:52,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:40:52,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:40:52,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:40:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:40:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:40:52,638 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-22 19:40:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:40:52,693 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-12-22 19:40:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:40:52,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-12-22 19:40:52,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:40:52,695 INFO L225 Difference]: With dead ends: 455 [2021-12-22 19:40:52,695 INFO L226 Difference]: Without dead ends: 241 [2021-12-22 19:40:52,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:40:52,697 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:40:52,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:40:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-22 19:40:52,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-12-22 19:40:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 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) [2021-12-22 19:40:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-12-22 19:40:52,705 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-12-22 19:40:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:40:52,706 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-12-22 19:40:52,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-22 19:40:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-12-22 19:40:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 19:40:52,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:40:52,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:40:52,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:40:52,925 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 [2021-12-22 19:40:52,925 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)] === [2021-12-22 19:40:52,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:40:52,926 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-12-22 19:40:52,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:40:52,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805530193] [2021-12-22 19:40:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:52,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:40:53,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:40:53,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164738616] [2021-12-22 19:40:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:53,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:40:53,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:40:53,096 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) [2021-12-22 19:40:53,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 19:40:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:40:54,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:40:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:40:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:40:54,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:40:54,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:40:54,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805530193] [2021-12-22 19:40:54,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:40:54,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164738616] [2021-12-22 19:40:54,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164738616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:40:54,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:40:54,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:40:54,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301573382] [2021-12-22 19:40:54,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:40:54,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:40:54,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:40:54,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:40:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:40:54,200 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-22 19:40:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:40:54,264 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-12-22 19:40:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:40:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-12-22 19:40:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:40:54,266 INFO L225 Difference]: With dead ends: 495 [2021-12-22 19:40:54,266 INFO L226 Difference]: Without dead ends: 261 [2021-12-22 19:40:54,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:40:54,268 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 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 [2021-12-22 19:40:54,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:40:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-22 19:40:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-12-22 19:40:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 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) [2021-12-22 19:40:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-12-22 19:40:54,277 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-12-22 19:40:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:40:54,277 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-12-22 19:40:54,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-12-22 19:40:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-12-22 19:40:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 19:40:54,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:40:54,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:40:54,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 19:40:54,508 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 [2021-12-22 19:40:54,508 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)] === [2021-12-22 19:40:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:40:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-12-22 19:40:54,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:40:54,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738104583] [2021-12-22 19:40:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:54,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:40:54,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:40:54,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663222198] [2021-12-22 19:40:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:54,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:40:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:40:54,647 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) [2021-12-22 19:40:54,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 19:40:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:40:55,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:40:55,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:40:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:40:55,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:40:55,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:40:55,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738104583] [2021-12-22 19:40:55,812 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:40:55,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663222198] [2021-12-22 19:40:55,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663222198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:40:55,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:40:55,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:40:55,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046026510] [2021-12-22 19:40:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:40:55,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:40:55,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:40:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:40:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:40:55,814 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-22 19:40:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:40:55,889 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-12-22 19:40:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:40:55,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-12-22 19:40:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:40:55,891 INFO L225 Difference]: With dead ends: 505 [2021-12-22 19:40:55,891 INFO L226 Difference]: Without dead ends: 251 [2021-12-22 19:40:55,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:40:55,892 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 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 [2021-12-22 19:40:55,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:40:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-22 19:40:55,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-12-22 19:40:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 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) [2021-12-22 19:40:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-12-22 19:40:55,900 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-12-22 19:40:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:40:55,901 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-12-22 19:40:55,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-22 19:40:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-12-22 19:40:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 19:40:55,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:40:55,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:40:55,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 19:40:56,119 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 [2021-12-22 19:40:56,120 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:40:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:40:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-12-22 19:40:56,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:40:56,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567787838] [2021-12-22 19:40:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:56,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:40:56,243 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:40:56,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171285700] [2021-12-22 19:40:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:56,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:40:56,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:40:56,245 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) [2021-12-22 19:40:56,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 19:40:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:40:57,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:40:57,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:40:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:40:57,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:40:57,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:40:57,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567787838] [2021-12-22 19:40:57,543 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:40:57,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171285700] [2021-12-22 19:40:57,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171285700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:40:57,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:40:57,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:40:57,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038844087] [2021-12-22 19:40:57,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:40:57,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:40:57,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:40:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:40:57,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:40:57,546 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-22 19:40:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:40:57,631 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-12-22 19:40:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:40:57,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-12-22 19:40:57,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:40:57,633 INFO L225 Difference]: With dead ends: 566 [2021-12-22 19:40:57,633 INFO L226 Difference]: Without dead ends: 326 [2021-12-22 19:40:57,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:40:57,635 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:40:57,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:40:57,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-22 19:40:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-12-22 19:40:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 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) [2021-12-22 19:40:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-12-22 19:40:57,642 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-12-22 19:40:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:40:57,643 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-12-22 19:40:57,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-22 19:40:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-12-22 19:40:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 19:40:57,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:40:57,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:40:57,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 19:40:57,867 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 [2021-12-22 19:40:57,868 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:40:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:40:57,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-12-22 19:40:57,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:40:57,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982365298] [2021-12-22 19:40:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:57,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:40:57,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:40:57,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905073073] [2021-12-22 19:40:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:57,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:40:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:40:57,983 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) [2021-12-22 19:40:57,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 19:40:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:40:59,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:40:59,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:40:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:40:59,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:40:59,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:40:59,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982365298] [2021-12-22 19:40:59,405 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:40:59,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905073073] [2021-12-22 19:40:59,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905073073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:40:59,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:40:59,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:40:59,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030447065] [2021-12-22 19:40:59,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:40:59,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:40:59,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:40:59,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:40:59,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:40:59,407 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-22 19:40:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:40:59,438 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-12-22 19:40:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 19:40:59,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-12-22 19:40:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:40:59,441 INFO L225 Difference]: With dead ends: 416 [2021-12-22 19:40:59,441 INFO L226 Difference]: Without dead ends: 415 [2021-12-22 19:40:59,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:40:59,442 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 105 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 936 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 [2021-12-22 19:40:59,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 936 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:40:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-22 19:40:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-12-22 19:40:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-22 19:40:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-12-22 19:40:59,453 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-12-22 19:40:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:40:59,453 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-12-22 19:40:59,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-12-22 19:40:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-12-22 19:40:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-22 19:40:59,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:40:59,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:40:59,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 19:40:59,685 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 [2021-12-22 19:40:59,685 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:40:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:40:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-12-22 19:40:59,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:40:59,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017358582] [2021-12-22 19:40:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:59,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:40:59,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:40:59,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918670990] [2021-12-22 19:40:59,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:40:59,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:40:59,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:40:59,819 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) [2021-12-22 19:40:59,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 19:41:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:01,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:41:01,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:01,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:01,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017358582] [2021-12-22 19:41:01,377 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:01,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918670990] [2021-12-22 19:41:01,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918670990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:01,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:01,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:41:01,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892004822] [2021-12-22 19:41:01,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:01,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:01,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:01,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:01,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:01,379 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-12-22 19:41:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:01,415 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-12-22 19:41:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:41:01,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2021-12-22 19:41:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:01,417 INFO L225 Difference]: With dead ends: 413 [2021-12-22 19:41:01,417 INFO L226 Difference]: Without dead ends: 412 [2021-12-22 19:41:01,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:01,418 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 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 [2021-12-22 19:41:01,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-22 19:41:01,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-12-22 19:41:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-22 19:41:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-12-22 19:41:01,432 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-12-22 19:41:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:01,432 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-12-22 19:41:01,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-12-22 19:41:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-12-22 19:41:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 19:41:01,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:01,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:01,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:01,649 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 [2021-12-22 19:41:01,649 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-12-22 19:41:01,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:01,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44904121] [2021-12-22 19:41:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:01,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:01,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330060391] [2021-12-22 19:41:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:01,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:01,798 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) [2021-12-22 19:41:01,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 19:41:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:03,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:41:03,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:03,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:03,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:03,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44904121] [2021-12-22 19:41:03,832 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:03,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330060391] [2021-12-22 19:41:03,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330060391] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:03,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:03,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-22 19:41:03,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225790646] [2021-12-22 19:41:03,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:03,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 19:41:03,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 19:41:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:41:03,834 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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) [2021-12-22 19:41:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:03,916 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-12-22 19:41:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 19:41:03,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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 108 [2021-12-22 19:41:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:03,918 INFO L225 Difference]: With dead ends: 634 [2021-12-22 19:41:03,919 INFO L226 Difference]: Without dead ends: 600 [2021-12-22 19:41:03,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-22 19:41:03,920 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 647 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:03,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1523 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:41:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-22 19:41:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-12-22 19:41:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-22 19:41:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-12-22 19:41:03,933 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-12-22 19:41:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:03,933 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-12-22 19:41:03,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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) [2021-12-22 19:41:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-12-22 19:41:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 19:41:03,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:03,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:03,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:04,155 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 [2021-12-22 19:41:04,155 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)] === [2021-12-22 19:41:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-12-22 19:41:04,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:04,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17860168] [2021-12-22 19:41:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:04,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:04,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:04,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616655688] [2021-12-22 19:41:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:04,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:04,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:04,272 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) [2021-12-22 19:41:04,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 19:41:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:06,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:41:06,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:06,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:06,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17860168] [2021-12-22 19:41:06,545 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616655688] [2021-12-22 19:41:06,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616655688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:06,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:06,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:41:06,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829496646] [2021-12-22 19:41:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:06,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:41:06,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:41:06,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:06,551 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-22 19:41:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:06,597 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2021-12-22 19:41:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:41:06,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-12-22 19:41:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:06,600 INFO L225 Difference]: With dead ends: 1051 [2021-12-22 19:41:06,600 INFO L226 Difference]: Without dead ends: 598 [2021-12-22 19:41:06,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:06,603 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 65 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 536 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 [2021-12-22 19:41:06,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-22 19:41:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-12-22 19:41:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-22 19:41:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-12-22 19:41:06,620 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-12-22 19:41:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:06,621 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-12-22 19:41:06,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-22 19:41:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-12-22 19:41:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 19:41:06,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:06,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:06,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:06,847 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 [2021-12-22 19:41:06,848 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)] === [2021-12-22 19:41:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:06,848 INFO L85 PathProgramCache]: Analyzing trace with hash -353330685, now seen corresponding path program 1 times [2021-12-22 19:41:06,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:06,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361372567] [2021-12-22 19:41:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:06,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:06,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:06,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9457784] [2021-12-22 19:41:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:06,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:06,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:06,948 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) [2021-12-22 19:41:06,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 19:41:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:08,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:41:08,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 19:41:08,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:08,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361372567] [2021-12-22 19:41:08,877 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9457784] [2021-12-22 19:41:08,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9457784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:08,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:08,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:41:08,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140853362] [2021-12-22 19:41:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:08,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:41:08,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:41:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:08,880 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-12-22 19:41:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:08,933 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2021-12-22 19:41:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:41:08,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 123 [2021-12-22 19:41:08,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:08,937 INFO L225 Difference]: With dead ends: 1136 [2021-12-22 19:41:08,937 INFO L226 Difference]: Without dead ends: 596 [2021-12-22 19:41:08,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:08,938 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:08,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-22 19:41:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-12-22 19:41:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-22 19:41:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-12-22 19:41:08,951 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-12-22 19:41:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:08,952 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-12-22 19:41:08,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-12-22 19:41:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-12-22 19:41:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-22 19:41:08,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:08,998 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:09,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:09,198 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 [2021-12-22 19:41:09,198 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)] === [2021-12-22 19:41:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash 623227202, now seen corresponding path program 1 times [2021-12-22 19:41:09,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:09,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138733392] [2021-12-22 19:41:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:09,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:09,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:09,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007438339] [2021-12-22 19:41:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:09,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:09,255 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) [2021-12-22 19:41:09,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 19:41:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:10,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 19:41:10,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 19:41:11,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:11,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:11,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138733392] [2021-12-22 19:41:11,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:11,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007438339] [2021-12-22 19:41:11,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007438339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:11,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:11,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:41:11,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088647900] [2021-12-22 19:41:11,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:11,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:11,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:11,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:11,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:11,117 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 19:41:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:11,165 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-12-22 19:41:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:41:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-12-22 19:41:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:11,168 INFO L225 Difference]: With dead ends: 1143 [2021-12-22 19:41:11,168 INFO L226 Difference]: Without dead ends: 599 [2021-12-22 19:41:11,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:11,169 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:11,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-22 19:41:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-22 19:41:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-22 19:41:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-12-22 19:41:11,183 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-12-22 19:41:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:11,183 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-12-22 19:41:11,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 19:41:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-12-22 19:41:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-22 19:41:11,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:11,185 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:11,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:11,401 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 [2021-12-22 19:41:11,401 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:11,401 INFO L85 PathProgramCache]: Analyzing trace with hash -268398914, now seen corresponding path program 1 times [2021-12-22 19:41:11,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:11,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010406364] [2021-12-22 19:41:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:11,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:11,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:11,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272779476] [2021-12-22 19:41:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:11,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:11,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:11,471 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) [2021-12-22 19:41:11,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 19:41:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:13,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 19:41:13,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-22 19:41:13,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-22 19:41:14,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010406364] [2021-12-22 19:41:14,099 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272779476] [2021-12-22 19:41:14,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272779476] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:14,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:14,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-22 19:41:14,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220454191] [2021-12-22 19:41:14,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:14,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 19:41:14,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 19:41:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:41:14,101 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-22 19:41:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:14,274 INFO L93 Difference]: Finished difference Result 1157 states and 1475 transitions. [2021-12-22 19:41:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 19:41:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 142 [2021-12-22 19:41:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:14,277 INFO L225 Difference]: With dead ends: 1157 [2021-12-22 19:41:14,277 INFO L226 Difference]: Without dead ends: 608 [2021-12-22 19:41:14,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:41:14,279 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 21 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:14,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1316 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:41:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-12-22 19:41:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-12-22 19:41:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2132867132867133) internal successors, (694), 586 states have internal predecessors, (694), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (40), 19 states have call predecessors, (40), 28 states have call successors, (40) [2021-12-22 19:41:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 762 transitions. [2021-12-22 19:41:14,297 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 762 transitions. Word has length 142 [2021-12-22 19:41:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:14,297 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 762 transitions. [2021-12-22 19:41:14,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-22 19:41:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 762 transitions. [2021-12-22 19:41:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-22 19:41:14,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:14,299 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:14,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:14,517 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 [2021-12-22 19:41:14,517 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash -150155646, now seen corresponding path program 2 times [2021-12-22 19:41:14,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964442895] [2021-12-22 19:41:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:14,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:14,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267764168] [2021-12-22 19:41:14,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:41:14,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:14,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:14,581 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) [2021-12-22 19:41:14,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 19:41:16,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:41:16,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:41:16,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 19:41:16,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 97 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-22 19:41:16,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-22 19:41:17,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:17,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964442895] [2021-12-22 19:41:17,118 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:17,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267764168] [2021-12-22 19:41:17,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267764168] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:17,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:17,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-12-22 19:41:17,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304234034] [2021-12-22 19:41:17,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:17,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 19:41:17,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:17,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 19:41:17,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-22 19:41:17,120 INFO L87 Difference]: Start difference. First operand 608 states and 762 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 19:41:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:17,746 INFO L93 Difference]: Finished difference Result 1216 states and 1576 transitions. [2021-12-22 19:41:17,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 19:41:17,747 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 150 [2021-12-22 19:41:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:17,749 INFO L225 Difference]: With dead ends: 1216 [2021-12-22 19:41:17,749 INFO L226 Difference]: Without dead ends: 616 [2021-12-22 19:41:17,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-12-22 19:41:17,750 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 276 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:17,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2623 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:41:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-12-22 19:41:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 608. [2021-12-22 19:41:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.222027972027972) internal successors, (699), 586 states have internal predecessors, (699), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-22 19:41:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 761 transitions. [2021-12-22 19:41:17,765 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 761 transitions. Word has length 150 [2021-12-22 19:41:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:17,765 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 761 transitions. [2021-12-22 19:41:17,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 19:41:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 761 transitions. [2021-12-22 19:41:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-22 19:41:17,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:17,766 INFO L514 BasicCegarLoop]: trace histogram [30, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:17,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:17,987 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 [2021-12-22 19:41:17,987 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1795242880, now seen corresponding path program 3 times [2021-12-22 19:41:17,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:17,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928818207] [2021-12-22 19:41:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:17,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:18,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:18,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215785386] [2021-12-22 19:41:18,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:41:18,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:18,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:18,114 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) [2021-12-22 19:41:18,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 19:41:19,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-22 19:41:19,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:41:19,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:41:19,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-22 19:41:20,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:20,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:20,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928818207] [2021-12-22 19:41:20,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:20,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215785386] [2021-12-22 19:41:20,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215785386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:20,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:20,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 19:41:20,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648071912] [2021-12-22 19:41:20,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:20,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 19:41:20,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:41:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:41:20,162 INFO L87 Difference]: Start difference. First operand 608 states and 761 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 19:41:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:20,232 INFO L93 Difference]: Finished difference Result 608 states and 761 transitions. [2021-12-22 19:41:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 19:41:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 168 [2021-12-22 19:41:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:20,235 INFO L225 Difference]: With dead ends: 608 [2021-12-22 19:41:20,235 INFO L226 Difference]: Without dead ends: 607 [2021-12-22 19:41:20,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:41:20,236 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 506 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:20,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1131 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:41:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-12-22 19:41:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2021-12-22 19:41:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 572 states have (on average 1.2185314685314685) internal successors, (697), 585 states have internal predecessors, (697), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-22 19:41:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 759 transitions. [2021-12-22 19:41:20,249 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 759 transitions. Word has length 168 [2021-12-22 19:41:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:20,250 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 759 transitions. [2021-12-22 19:41:20,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 19:41:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 759 transitions. [2021-12-22 19:41:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-12-22 19:41:20,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:20,253 INFO L514 BasicCegarLoop]: trace histogram [30, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:20,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:20,468 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 [2021-12-22 19:41:20,468 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1407918866, now seen corresponding path program 1 times [2021-12-22 19:41:20,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153025163] [2021-12-22 19:41:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:20,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:20,732 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:20,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167429052] [2021-12-22 19:41:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:20,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:20,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:20,734 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) [2021-12-22 19:41:20,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-22 19:41:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:23,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 7454 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 19:41:23,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-22 19:41:24,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-22 19:41:25,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:25,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153025163] [2021-12-22 19:41:25,063 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:25,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167429052] [2021-12-22 19:41:25,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167429052] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:25,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:25,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-22 19:41:25,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020764702] [2021-12-22 19:41:25,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:25,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 19:41:25,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 19:41:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-22 19:41:25,065 INFO L87 Difference]: Start difference. First operand 607 states and 759 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 19:41:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:25,212 INFO L93 Difference]: Finished difference Result 819 states and 1034 transitions. [2021-12-22 19:41:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 19:41:25,212 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 367 [2021-12-22 19:41:25,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:25,217 INFO L225 Difference]: With dead ends: 819 [2021-12-22 19:41:25,217 INFO L226 Difference]: Without dead ends: 818 [2021-12-22 19:41:25,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-22 19:41:25,218 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 805 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:25,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 2329 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:41:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-12-22 19:41:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 606. [2021-12-22 19:41:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 572 states have (on average 1.2167832167832169) internal successors, (696), 584 states have internal predecessors, (696), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-22 19:41:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 758 transitions. [2021-12-22 19:41:25,234 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 758 transitions. Word has length 367 [2021-12-22 19:41:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:25,235 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 758 transitions. [2021-12-22 19:41:25,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 19:41:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 758 transitions. [2021-12-22 19:41:25,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-12-22 19:41:25,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:25,238 INFO L514 BasicCegarLoop]: trace histogram [30, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:25,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:25,455 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 [2021-12-22 19:41:25,455 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1770440096, now seen corresponding path program 1 times [2021-12-22 19:41:25,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:25,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772317813] [2021-12-22 19:41:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:25,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:25,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:25,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070578259] [2021-12-22 19:41:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:25,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:25,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:25,856 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) [2021-12-22 19:41:25,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-22 19:41:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:29,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 7478 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 19:41:29,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-22 19:41:29,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-22 19:41:30,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:30,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772317813] [2021-12-22 19:41:30,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:30,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070578259] [2021-12-22 19:41:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070578259] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:30,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:30,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-22 19:41:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665748841] [2021-12-22 19:41:30,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:30,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 19:41:30,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 19:41:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-22 19:41:30,328 INFO L87 Difference]: Start difference. First operand 606 states and 758 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 19:41:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:30,528 INFO L93 Difference]: Finished difference Result 1371 states and 1710 transitions. [2021-12-22 19:41:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 19:41:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 372 [2021-12-22 19:41:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:30,533 INFO L225 Difference]: With dead ends: 1371 [2021-12-22 19:41:30,534 INFO L226 Difference]: Without dead ends: 1338 [2021-12-22 19:41:30,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-22 19:41:30,535 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1579 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:30,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 3836 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:41:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-12-22 19:41:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2021-12-22 19:41:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1280 states have (on average 1.2) internal successors, (1536), 1292 states have internal predecessors, (1536), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-12-22 19:41:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1654 transitions. [2021-12-22 19:41:30,565 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1654 transitions. Word has length 372 [2021-12-22 19:41:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:30,566 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1654 transitions. [2021-12-22 19:41:30,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 19:41:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1654 transitions. [2021-12-22 19:41:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2021-12-22 19:41:30,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:30,579 INFO L514 BasicCegarLoop]: trace histogram [30, 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, 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, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:30,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:30,807 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 [2021-12-22 19:41:30,808 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)] === [2021-12-22 19:41:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1141232708, now seen corresponding path program 2 times [2021-12-22 19:41:30,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:30,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676306345] [2021-12-22 19:41:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:30,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:31,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:31,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509821727] [2021-12-22 19:41:31,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:41:31,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:31,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:31,303 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) [2021-12-22 19:41:31,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-22 19:41:35,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 19:41:35,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:41:35,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:41:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2704 trivial. 0 not checked. [2021-12-22 19:41:36,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:36,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:36,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676306345] [2021-12-22 19:41:36,942 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:36,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509821727] [2021-12-22 19:41:36,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509821727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:36,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:36,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:41:36,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956979933] [2021-12-22 19:41:36,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:36,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:36,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:36,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:36,945 INFO L87 Difference]: Start difference. First operand 1338 states and 1654 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 19:41:37,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:37,001 INFO L93 Difference]: Finished difference Result 1364 states and 1700 transitions. [2021-12-22 19:41:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 19:41:37,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 780 [2021-12-22 19:41:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:37,006 INFO L225 Difference]: With dead ends: 1364 [2021-12-22 19:41:37,006 INFO L226 Difference]: Without dead ends: 1363 [2021-12-22 19:41:37,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:37,007 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 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 [2021-12-22 19:41:37,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-12-22 19:41:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1340. [2021-12-22 19:41:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1282 states have (on average 1.1996879875195008) internal successors, (1538), 1294 states have internal predecessors, (1538), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-12-22 19:41:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1656 transitions. [2021-12-22 19:41:37,055 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1656 transitions. Word has length 780 [2021-12-22 19:41:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:37,056 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1656 transitions. [2021-12-22 19:41:37,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 19:41:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1656 transitions. [2021-12-22 19:41:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2021-12-22 19:41:37,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:37,067 INFO L514 BasicCegarLoop]: trace histogram [30, 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, 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, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:37,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:37,291 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 [2021-12-22 19:41:37,291 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1018476361, now seen corresponding path program 1 times [2021-12-22 19:41:37,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:37,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686312224] [2021-12-22 19:41:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:37,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:38,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:38,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788573876] [2021-12-22 19:41:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:38,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:38,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:38,318 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) [2021-12-22 19:41:38,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-22 19:41:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:46,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 19079 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 19:41:46,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-22 19:41:47,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-22 19:41:48,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:48,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686312224] [2021-12-22 19:41:48,660 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:48,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788573876] [2021-12-22 19:41:48,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788573876] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:48,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:48,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-12-22 19:41:48,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207683365] [2021-12-22 19:41:48,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:48,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-22 19:41:48,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-22 19:41:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-12-22 19:41:48,663 INFO L87 Difference]: Start difference. First operand 1340 states and 1656 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 19:41:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:48,957 INFO L93 Difference]: Finished difference Result 1924 states and 2385 transitions. [2021-12-22 19:41:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 19:41:48,957 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 781 [2021-12-22 19:41:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:48,963 INFO L225 Difference]: With dead ends: 1924 [2021-12-22 19:41:48,963 INFO L226 Difference]: Without dead ends: 1889 [2021-12-22 19:41:48,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1569 GetRequests, 1540 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-22 19:41:48,965 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 2802 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:48,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2854 Valid, 3197 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:41:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-12-22 19:41:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2021-12-22 19:41:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1813 states have (on average 1.19580805295091) internal successors, (2168), 1825 states have internal predecessors, (2168), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-12-22 19:41:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2328 transitions. [2021-12-22 19:41:49,010 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2328 transitions. Word has length 781 [2021-12-22 19:41:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:49,010 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2328 transitions. [2021-12-22 19:41:49,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 19:41:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2328 transitions. [2021-12-22 19:41:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2021-12-22 19:41:49,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:49,024 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:49,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:49,250 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 [2021-12-22 19:41:49,251 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:41:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash 402351758, now seen corresponding path program 2 times [2021-12-22 19:41:49,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:49,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722484082] [2021-12-22 19:41:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:49,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:50,292 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:50,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968363560] [2021-12-22 19:41:50,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:41:50,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:50,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:50,319 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) [2021-12-22 19:41:50,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-22 19:41:57,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 19:41:57,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:41:57,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:41:57,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5143 trivial. 0 not checked. [2021-12-22 19:41:58,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:58,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722484082] [2021-12-22 19:41:58,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968363560] [2021-12-22 19:41:58,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968363560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:58,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:58,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:41:58,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131762716] [2021-12-22 19:41:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:58,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:58,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:58,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:58,752 INFO L87 Difference]: Start difference. First operand 1889 states and 2328 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 19:41:58,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:58,812 INFO L93 Difference]: Finished difference Result 1889 states and 2328 transitions. [2021-12-22 19:41:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:41:58,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1087 [2021-12-22 19:41:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:58,819 INFO L225 Difference]: With dead ends: 1889 [2021-12-22 19:41:58,819 INFO L226 Difference]: Without dead ends: 1888 [2021-12-22 19:41:58,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:58,820 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 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 [2021-12-22 19:41:58,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-12-22 19:41:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2021-12-22 19:41:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1813 states have (on average 1.1952564809707666) internal successors, (2167), 1824 states have internal predecessors, (2167), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-12-22 19:41:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2327 transitions. [2021-12-22 19:41:58,963 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2327 transitions. Word has length 1087 [2021-12-22 19:41:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:58,964 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2327 transitions. [2021-12-22 19:41:58,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 19:41:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2327 transitions. [2021-12-22 19:41:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2021-12-22 19:41:58,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:58,977 INFO L514 BasicCegarLoop]: trace histogram [30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 4, 4, 4, 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] [2021-12-22 19:41:59,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:59,203 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 [2021-12-22 19:41:59,204 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)] === [2021-12-22 19:41:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:59,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2001307945, now seen corresponding path program 1 times [2021-12-22 19:41:59,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:59,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865100165] [2021-12-22 19:41:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:59,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms