/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:20:23,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:20:23,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:20:24,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:20:24,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:20:24,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:20:24,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:20:24,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:20:24,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:20:24,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:20:24,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:20:24,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:20:24,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:20:24,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:20:24,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:20:24,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:20:24,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:20:24,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:20:24,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:20:24,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:20:24,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:20:24,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:20:24,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:20:24,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:20:24,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:20:24,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:20:24,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:20:24,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:20:24,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:20:24,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:20:24,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:20:24,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:20:24,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:20:24,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:20:24,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:20:24,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:20:24,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:20:24,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:20:24,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:20:24,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:20:24,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:20:24,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:20:24,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:20:24,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:20:24,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:20:24,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:20:24,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:20:24,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:20:24,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:20:24,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:20:24,206 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:20:24,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:20:24,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:20:24,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:20:24,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:20:24,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:20:24,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:20:24,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:20:24,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:20:24,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:20:24,208 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:20:24,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:20:24,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:20:24,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:20:24,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:20:24,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:20:24,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:20:24,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:20:24,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:20:24,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:20:24,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:20:24,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:20:24,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:20:24,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:20:24,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:20:24,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:20:24,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:20:24,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:20:24,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:20:24,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:20:24,659 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:20:24,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2022-10-16 14:20:24,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f4cf97a/e255b1b855144f9283ae9d39e277d5b0/FLAGc02d6c2b7 [2022-10-16 14:20:25,604 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:20:25,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2022-10-16 14:20:25,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f4cf97a/e255b1b855144f9283ae9d39e277d5b0/FLAGc02d6c2b7 [2022-10-16 14:20:25,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f4cf97a/e255b1b855144f9283ae9d39e277d5b0 [2022-10-16 14:20:25,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:20:25,836 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:20:25,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:20:25,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:20:25,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:20:25,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:25" (1/1) ... [2022-10-16 14:20:25,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30806374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:25, skipping insertion in model container [2022-10-16 14:20:25,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:25" (1/1) ... [2022-10-16 14:20:25,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:20:25,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:20:26,471 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/list-simple/sll2c_prepend_equal.i[24458,24471] [2022-10-16 14:20:26,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:20:26,494 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:20:26,584 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/list-simple/sll2c_prepend_equal.i[24458,24471] [2022-10-16 14:20:26,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:20:26,633 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:20:26,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26 WrapperNode [2022-10-16 14:20:26,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:20:26,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:20:26,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:20:26,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:20:26,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,739 INFO L138 Inliner]: procedures = 127, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2022-10-16 14:20:26,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:20:26,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:20:26,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:20:26,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:20:26,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,810 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:20:26,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:20:26,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:20:26,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:20:26,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (1/1) ... [2022-10-16 14:20:26,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:20:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:26,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 14:20:26,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 14:20:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:20:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:20:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-10-16 14:20:26,929 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-10-16 14:20:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:20:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:20:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:20:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:20:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:20:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:20:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 14:20:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:20:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:20:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:20:27,101 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:20:27,104 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:20:27,539 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:20:27,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:20:27,554 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-16 14:20:27,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:27 BoogieIcfgContainer [2022-10-16 14:20:27,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:20:27,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:20:27,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:20:27,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:20:27,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:25" (1/3) ... [2022-10-16 14:20:27,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2a1f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:27, skipping insertion in model container [2022-10-16 14:20:27,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26" (2/3) ... [2022-10-16 14:20:27,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2a1f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:27, skipping insertion in model container [2022-10-16 14:20:27,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:27" (3/3) ... [2022-10-16 14:20:27,570 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2022-10-16 14:20:27,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:20:27,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-16 14:20:27,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:20:27,685 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d6aee31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:20:27,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-16 14:20:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 42 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 14:20:27,702 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:27,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:27,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash 676749665, now seen corresponding path program 1 times [2022-10-16 14:20:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:27,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380353584] [2022-10-16 14:20:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:28,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380353584] [2022-10-16 14:20:28,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380353584] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:28,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:28,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835673164] [2022-10-16 14:20:28,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:28,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:28,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:28,513 INFO L87 Difference]: Start difference. First operand has 47 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 42 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-10-16 14:20:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:28,664 INFO L93 Difference]: Finished difference Result 90 states and 117 transitions. [2022-10-16 14:20:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:28,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 18 [2022-10-16 14:20:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:28,677 INFO L225 Difference]: With dead ends: 90 [2022-10-16 14:20:28,677 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 14:20:28,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:28,687 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:28,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 176 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 14:20:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-10-16 14:20:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:20:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-10-16 14:20:28,739 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 18 [2022-10-16 14:20:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:28,742 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-10-16 14:20:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-10-16 14:20:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-10-16 14:20:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-16 14:20:28,744 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:28,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:28,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:20:28,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash -495596816, now seen corresponding path program 1 times [2022-10-16 14:20:28,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:28,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174173080] [2022-10-16 14:20:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:28,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:29,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174173080] [2022-10-16 14:20:29,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174173080] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:29,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:29,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:29,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695699965] [2022-10-16 14:20:29,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:29,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:29,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:29,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:29,035 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-10-16 14:20:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:29,133 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-10-16 14:20:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 19 [2022-10-16 14:20:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:29,135 INFO L225 Difference]: With dead ends: 43 [2022-10-16 14:20:29,136 INFO L226 Difference]: Without dead ends: 42 [2022-10-16 14:20:29,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:29,138 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:29,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-16 14:20:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-16 14:20:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 36 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:20:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-10-16 14:20:29,149 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 19 [2022-10-16 14:20:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:29,150 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-10-16 14:20:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-10-16 14:20:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-10-16 14:20:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 14:20:29,151 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:29,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:29,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:20:29,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2074493911, now seen corresponding path program 1 times [2022-10-16 14:20:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:29,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974081025] [2022-10-16 14:20:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 14:20:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974081025] [2022-10-16 14:20:29,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974081025] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:29,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899455349] [2022-10-16 14:20:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:29,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:29,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:29,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:29,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:20:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:20:29,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:29,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:29,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899455349] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:29,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:29,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-10-16 14:20:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914889224] [2022-10-16 14:20:29,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:29,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:29,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:20:29,800 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:29,838 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-10-16 14:20:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:20:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-10-16 14:20:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:29,840 INFO L225 Difference]: With dead ends: 69 [2022-10-16 14:20:29,841 INFO L226 Difference]: Without dead ends: 36 [2022-10-16 14:20:29,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:20:29,843 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 48 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:29,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 78 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-16 14:20:29,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-16 14:20:29,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 31 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-10-16 14:20:29,852 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 28 [2022-10-16 14:20:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:29,852 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-10-16 14:20:29,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-10-16 14:20:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 14:20:29,854 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:29,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:29,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 14:20:30,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:30,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1785256606, now seen corresponding path program 1 times [2022-10-16 14:20:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:30,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884552524] [2022-10-16 14:20:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:30,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:30,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884552524] [2022-10-16 14:20:30,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884552524] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:30,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:30,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532984324] [2022-10-16 14:20:30,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:30,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:30,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:30,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:30,236 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:30,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:30,304 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-10-16 14:20:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:20:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-10-16 14:20:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:30,309 INFO L225 Difference]: With dead ends: 42 [2022-10-16 14:20:30,310 INFO L226 Difference]: Without dead ends: 40 [2022-10-16 14:20:30,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:30,322 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:30,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-10-16 14:20:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-10-16 14:20:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.1875) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-10-16 14:20:30,344 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 34 [2022-10-16 14:20:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:30,345 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-10-16 14:20:30,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-10-16 14:20:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 14:20:30,347 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:30,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:30,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 14:20:30,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash -11984249, now seen corresponding path program 1 times [2022-10-16 14:20:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702729762] [2022-10-16 14:20:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:30,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:30,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702729762] [2022-10-16 14:20:30,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702729762] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:30,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920539269] [2022-10-16 14:20:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:30,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:30,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:30,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:30,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 14:20:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 14:20:30,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:30,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:30,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920539269] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:30,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:30,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2022-10-16 14:20:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627959966] [2022-10-16 14:20:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:30,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:20:30,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:20:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:30,839 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:30,845 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-10-16 14:20:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:20:30,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-10-16 14:20:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:30,847 INFO L225 Difference]: With dead ends: 40 [2022-10-16 14:20:30,847 INFO L226 Difference]: Without dead ends: 39 [2022-10-16 14:20:30,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:30,849 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:30,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 45 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-16 14:20:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-10-16 14:20:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-10-16 14:20:30,856 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2022-10-16 14:20:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:30,857 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-10-16 14:20:30,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-10-16 14:20:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 14:20:30,858 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:30,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:30,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:31,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:31,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:31,074 INFO L85 PathProgramCache]: Analyzing trace with hash -371511614, now seen corresponding path program 1 times [2022-10-16 14:20:31,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:31,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544791736] [2022-10-16 14:20:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:31,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:31,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:31,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544791736] [2022-10-16 14:20:31,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544791736] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:31,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829610362] [2022-10-16 14:20:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:31,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:31,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:31,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:31,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 14:20:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 14:20:31,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:31,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:31,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829610362] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:31,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:31,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2022-10-16 14:20:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688503897] [2022-10-16 14:20:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:31,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:20:31,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:20:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:31,481 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:31,503 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-10-16 14:20:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:20:31,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-10-16 14:20:31,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:31,505 INFO L225 Difference]: With dead ends: 39 [2022-10-16 14:20:31,505 INFO L226 Difference]: Without dead ends: 36 [2022-10-16 14:20:31,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:31,506 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:31,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-16 14:20:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-16 14:20:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-10-16 14:20:31,514 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 39 [2022-10-16 14:20:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:31,514 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-10-16 14:20:31,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-10-16 14:20:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 14:20:31,516 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:31,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-10-16 14:20:31,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:31,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:31,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:31,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:31,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1368080786, now seen corresponding path program 1 times [2022-10-16 14:20:31,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:31,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625443287] [2022-10-16 14:20:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:31,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625443287] [2022-10-16 14:20:31,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625443287] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:31,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337737364] [2022-10-16 14:20:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:31,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:31,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:31,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:31,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 14:20:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:20:32,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:32,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:32,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337737364] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:32,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:32,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 14:20:32,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989865032] [2022-10-16 14:20:32,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:32,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 14:20:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 14:20:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:20:32,194 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:32,344 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2022-10-16 14:20:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 14:20:32,345 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-10-16 14:20:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:32,346 INFO L225 Difference]: With dead ends: 58 [2022-10-16 14:20:32,346 INFO L226 Difference]: Without dead ends: 57 [2022-10-16 14:20:32,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-10-16 14:20:32,347 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:32,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 196 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-16 14:20:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-10-16 14:20:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.127659574468085) internal successors, (53), 48 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-10-16 14:20:32,356 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 40 [2022-10-16 14:20:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:32,356 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-10-16 14:20:32,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-10-16 14:20:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 14:20:32,358 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:32,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-10-16 14:20:32,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:32,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:32,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:32,573 INFO L85 PathProgramCache]: Analyzing trace with hash -539168503, now seen corresponding path program 1 times [2022-10-16 14:20:32,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:32,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536447077] [2022-10-16 14:20:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:32,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:32,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:32,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536447077] [2022-10-16 14:20:32,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536447077] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:32,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297295681] [2022-10-16 14:20:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:32,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:32,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:32,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:32,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 14:20:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:20:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:33,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:33,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297295681] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:33,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:33,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-10-16 14:20:33,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838273212] [2022-10-16 14:20:33,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:33,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:20:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:33,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:20:33,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:20:33,029 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:33,073 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-10-16 14:20:33,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:33,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-10-16 14:20:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:33,074 INFO L225 Difference]: With dead ends: 53 [2022-10-16 14:20:33,075 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 14:20:33,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:20:33,076 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:33,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 14:20:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-16 14:20:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-10-16 14:20:33,084 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 41 [2022-10-16 14:20:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:33,084 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-10-16 14:20:33,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-10-16 14:20:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-16 14:20:33,086 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:33,086 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:33,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:33,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:33,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:33,300 INFO L85 PathProgramCache]: Analyzing trace with hash -674280338, now seen corresponding path program 2 times [2022-10-16 14:20:33,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:33,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096216502] [2022-10-16 14:20:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:33,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:33,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:33,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:33,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096216502] [2022-10-16 14:20:33,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096216502] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:33,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888515599] [2022-10-16 14:20:33,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:20:33,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:33,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:33,603 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:33,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 14:20:33,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:20:33,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:33,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:20:33,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:33,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:34,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888515599] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:34,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:34,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2022-10-16 14:20:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261530095] [2022-10-16 14:20:34,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:34,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 14:20:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 14:20:34,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2022-10-16 14:20:34,103 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 25 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:34,342 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2022-10-16 14:20:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 14:20:34,343 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2022-10-16 14:20:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:34,344 INFO L225 Difference]: With dead ends: 90 [2022-10-16 14:20:34,344 INFO L226 Difference]: Without dead ends: 89 [2022-10-16 14:20:34,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=334, Invalid=856, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 14:20:34,346 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 62 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:34,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 211 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-16 14:20:34,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2022-10-16 14:20:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2022-10-16 14:20:34,358 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 58 [2022-10-16 14:20:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:34,359 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2022-10-16 14:20:34,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2022-10-16 14:20:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-16 14:20:34,361 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:34,361 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:34,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:34,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:34,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:34,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1645323558, now seen corresponding path program 3 times [2022-10-16 14:20:34,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:34,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866094664] [2022-10-16 14:20:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:34,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:35,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:35,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866094664] [2022-10-16 14:20:35,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866094664] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:35,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971244733] [2022-10-16 14:20:35,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:20:35,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:35,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:35,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 14:20:35,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 14:20:35,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:35,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 14:20:35,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:35,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-10-16 14:20:35,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 14:20:36,046 WARN L855 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1360 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1360) |c_#memory_$Pointer$.offset|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1359 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1359))))) is different from true [2022-10-16 14:20:36,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:36,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-16 14:20:36,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:36,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-16 14:20:36,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-10-16 14:20:36,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-10-16 14:20:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 302 trivial. 2 not checked. [2022-10-16 14:20:36,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:36,366 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1366 (Array Int Int)) (v_ArrVal_1365 (Array Int Int)) (|v_node_create_~temp~0#1.base_25| Int)) (or (not (< |v_node_create_~temp~0#1.base_25| |c_#StackHeapBarrier|)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_node_create_~temp~0#1.base_25| v_ArrVal_1366) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_25| v_ArrVal_1365) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|) 0)))) is different from false [2022-10-16 14:20:36,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971244733] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:36,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 14:20:36,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14] total 37 [2022-10-16 14:20:36,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757748763] [2022-10-16 14:20:36,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-16 14:20:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:36,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-16 14:20:36,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1145, Unknown=2, NotChecked=142, Total=1482 [2022-10-16 14:20:36,372 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 37 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 33 states have internal predecessors, (107), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 14:20:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:37,073 INFO L93 Difference]: Finished difference Result 160 states and 165 transitions. [2022-10-16 14:20:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 14:20:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 33 states have internal predecessors, (107), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 94 [2022-10-16 14:20:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:37,075 INFO L225 Difference]: With dead ends: 160 [2022-10-16 14:20:37,075 INFO L226 Difference]: Without dead ends: 95 [2022-10-16 14:20:37,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=430, Invalid=2332, Unknown=2, NotChecked=206, Total=2970 [2022-10-16 14:20:37,078 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:37,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 274 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 299 Invalid, 0 Unknown, 38 Unchecked, 0.3s Time] [2022-10-16 14:20:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-16 14:20:37,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2022-10-16 14:20:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2022-10-16 14:20:37,090 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 94 [2022-10-16 14:20:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:37,090 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2022-10-16 14:20:37,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 33 states have internal predecessors, (107), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 14:20:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2022-10-16 14:20:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 14:20:37,092 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:37,092 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:37,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:37,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:37,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:37,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1853307663, now seen corresponding path program 1 times [2022-10-16 14:20:37,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:37,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009633510] [2022-10-16 14:20:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:37,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:38,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:38,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009633510] [2022-10-16 14:20:38,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009633510] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:38,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599838012] [2022-10-16 14:20:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:38,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:38,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:38,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:38,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 14:20:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:38,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 14:20:38,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:38,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:39,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599838012] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:39,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:39,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 52 [2022-10-16 14:20:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102783362] [2022-10-16 14:20:39,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-10-16 14:20:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:39,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-10-16 14:20:39,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2022-10-16 14:20:39,281 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 53 states, 52 states have (on average 3.173076923076923) internal successors, (165), 52 states have internal predecessors, (165), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:39,970 INFO L93 Difference]: Finished difference Result 174 states and 189 transitions. [2022-10-16 14:20:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-10-16 14:20:39,971 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.173076923076923) internal successors, (165), 52 states have internal predecessors, (165), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 103 [2022-10-16 14:20:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:39,973 INFO L225 Difference]: With dead ends: 174 [2022-10-16 14:20:39,973 INFO L226 Difference]: Without dead ends: 173 [2022-10-16 14:20:39,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1629, Invalid=4223, Unknown=0, NotChecked=0, Total=5852 [2022-10-16 14:20:39,977 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 196 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:39,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 222 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:20:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-10-16 14:20:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2022-10-16 14:20:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2022-10-16 14:20:39,993 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 103 [2022-10-16 14:20:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:39,993 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2022-10-16 14:20:39,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.173076923076923) internal successors, (165), 52 states have internal predecessors, (165), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2022-10-16 14:20:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-10-16 14:20:39,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:39,999 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:40,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:40,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 14:20:40,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:40,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash -619497451, now seen corresponding path program 2 times [2022-10-16 14:20:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:40,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226147817] [2022-10-16 14:20:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:42,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:42,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226147817] [2022-10-16 14:20:42,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226147817] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:42,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639221903] [2022-10-16 14:20:42,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:20:42,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:42,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:42,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 14:20:42,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:20:42,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:42,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 14:20:42,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:43,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:45,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639221903] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:45,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:45,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 104 [2022-10-16 14:20:45,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598977611] [2022-10-16 14:20:45,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:45,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-10-16 14:20:45,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-10-16 14:20:45,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2757, Invalid=8163, Unknown=0, NotChecked=0, Total=10920 [2022-10-16 14:20:45,911 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand has 105 states, 104 states have (on average 3.0865384615384617) internal successors, (321), 104 states have internal predecessors, (321), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:48,186 INFO L93 Difference]: Finished difference Result 330 states and 358 transitions. [2022-10-16 14:20:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-10-16 14:20:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 3.0865384615384617) internal successors, (321), 104 states have internal predecessors, (321), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 181 [2022-10-16 14:20:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:48,189 INFO L225 Difference]: With dead ends: 330 [2022-10-16 14:20:48,189 INFO L226 Difference]: Without dead ends: 329 [2022-10-16 14:20:48,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6634, Invalid=17236, Unknown=0, NotChecked=0, Total=23870 [2022-10-16 14:20:48,201 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 450 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:48,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 543 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 14:20:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-10-16 14:20:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2022-10-16 14:20:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 323 states have (on average 1.0061919504643964) internal successors, (325), 323 states have internal predecessors, (325), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 331 transitions. [2022-10-16 14:20:48,221 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 331 transitions. Word has length 181 [2022-10-16 14:20:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:48,222 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 331 transitions. [2022-10-16 14:20:48,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 3.0865384615384617) internal successors, (321), 104 states have internal predecessors, (321), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 331 transitions. [2022-10-16 14:20:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-10-16 14:20:48,227 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:48,227 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:48,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:48,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:48,442 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:20:48,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1417023837, now seen corresponding path program 3 times [2022-10-16 14:20:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:48,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35327427] [2022-10-16 14:20:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7516 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35327427] [2022-10-16 14:20:56,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35327427] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087583709] [2022-10-16 14:20:56,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:20:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:56,720 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:20:56,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 14:20:57,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 14:20:57,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:57,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 97 conjunts are in the unsatisfiable core [2022-10-16 14:20:57,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:57,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 14:20:57,847 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-16 14:20:57,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-16 14:20:57,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 14:20:58,195 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-16 14:20:58,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-10-16 14:20:58,452 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 14:20:58,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 22 [2022-10-16 14:20:58,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-10-16 14:20:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:58,809 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-10-16 14:20:58,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 51 [2022-10-16 14:20:58,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:58,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49 [2022-10-16 14:20:58,842 INFO L356 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-10-16 14:20:58,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-10-16 14:20:59,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2022-10-16 14:20:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7516 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 7500 trivial. 0 not checked. [2022-10-16 14:20:59,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:59,766 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_14| Int) (v_ArrVal_1995 (Array Int Int)) (v_ArrVal_1994 (Array Int Int))) (or (not (< |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_14| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_14|) 0)) (not (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_14| v_ArrVal_1994))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|))) (= (select (select .cse0 .cse1) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_prepend_#t~ret9#1.base_14| v_ArrVal_1995) |c_ULTIMATE.start_sll_circular_prepend_~head#1.base|) |c_ULTIMATE.start_sll_circular_prepend_~head#1.offset|)) .cse1)))))) is different from false [2022-10-16 14:20:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087583709] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:59,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 14:20:59,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 21] total 124 [2022-10-16 14:20:59,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219175482] [2022-10-16 14:20:59,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-10-16 14:20:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-10-16 14:20:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2819, Invalid=13185, Unknown=2, NotChecked=250, Total=16256 [2022-10-16 14:20:59,778 INFO L87 Difference]: Start difference. First operand 328 states and 331 transitions. Second operand has 124 states, 122 states have (on average 2.9262295081967213) internal successors, (357), 118 states have internal predecessors, (357), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 14:21:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:21:04,082 INFO L93 Difference]: Finished difference Result 643 states and 648 transitions. [2022-10-16 14:21:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-10-16 14:21:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 122 states have (on average 2.9262295081967213) internal successors, (357), 118 states have internal predecessors, (357), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 337 [2022-10-16 14:21:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:21:04,085 INFO L225 Difference]: With dead ends: 643 [2022-10-16 14:21:04,085 INFO L226 Difference]: Without dead ends: 337 [2022-10-16 14:21:04,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6967 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=6888, Invalid=26786, Unknown=2, NotChecked=364, Total=34040 [2022-10-16 14:21:04,092 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 349 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 14:21:04,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 475 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 43 Unchecked, 0.6s Time] [2022-10-16 14:21:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-10-16 14:21:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 336. [2022-10-16 14:21:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 331 states have (on average 1.0060422960725075) internal successors, (333), 331 states have internal predecessors, (333), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:21:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 339 transitions. [2022-10-16 14:21:04,111 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 339 transitions. Word has length 337 [2022-10-16 14:21:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:21:04,112 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 339 transitions. [2022-10-16 14:21:04,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 122 states have (on average 2.9262295081967213) internal successors, (357), 118 states have internal predecessors, (357), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 14:21:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 339 transitions. [2022-10-16 14:21:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-10-16 14:21:04,118 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:21:04,118 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:21:04,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 14:21:04,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 14:21:04,333 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:21:04,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:21:04,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1621071156, now seen corresponding path program 1 times [2022-10-16 14:21:04,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:21:04,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502722147] [2022-10-16 14:21:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:21:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:21:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:21:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:21:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7821 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:21:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:21:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502722147] [2022-10-16 14:21:12,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502722147] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:21:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616741025] [2022-10-16 14:21:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:12,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:21:12,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:21:12,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:21:12,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 14:21:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:12,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 105 conjunts are in the unsatisfiable core [2022-10-16 14:21:12,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:21:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7821 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:21:13,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:21:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7821 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:21:23,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616741025] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:21:23,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:21:23,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105, 105] total 212 [2022-10-16 14:21:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167186430] [2022-10-16 14:21:23,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:21:23,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 213 states [2022-10-16 14:21:23,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:21:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2022-10-16 14:21:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11343, Invalid=33813, Unknown=0, NotChecked=0, Total=45156 [2022-10-16 14:21:23,761 INFO L87 Difference]: Start difference. First operand 336 states and 339 transitions. Second operand has 213 states, 212 states have (on average 3.047169811320755) internal successors, (646), 212 states have internal predecessors, (646), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:21:33,588 INFO L93 Difference]: Finished difference Result 656 states and 711 transitions. [2022-10-16 14:21:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-10-16 14:21:33,589 INFO L78 Accepts]: Start accepts. Automaton has has 213 states, 212 states have (on average 3.047169811320755) internal successors, (646), 212 states have internal predecessors, (646), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 345 [2022-10-16 14:21:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:21:33,593 INFO L225 Difference]: With dead ends: 656 [2022-10-16 14:21:33,593 INFO L226 Difference]: Without dead ends: 655 [2022-10-16 14:21:33,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22142 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=27829, Invalid=72343, Unknown=0, NotChecked=0, Total=100172 [2022-10-16 14:21:33,602 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1136 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 14:21:33,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 602 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 14:21:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-10-16 14:21:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 654. [2022-10-16 14:21:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 649 states have (on average 1.0030816640986133) internal successors, (651), 649 states have internal predecessors, (651), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:21:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 657 transitions. [2022-10-16 14:21:33,628 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 657 transitions. Word has length 345 [2022-10-16 14:21:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:21:33,629 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 657 transitions. [2022-10-16 14:21:33,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 213 states, 212 states have (on average 3.047169811320755) internal successors, (646), 212 states have internal predecessors, (646), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 657 transitions. [2022-10-16 14:21:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-10-16 14:21:33,646 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:21:33,647 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 104, 104, 104, 104, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:21:33,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 14:21:33,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 14:21:33,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:21:33,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:21:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash -826240816, now seen corresponding path program 2 times [2022-10-16 14:21:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:21:33,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328828601] [2022-10-16 14:21:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:33,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:21:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:22:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:22:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:22:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 32466 backedges. 0 proven. 32448 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:22:06,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:22:06,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328828601] [2022-10-16 14:22:06,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328828601] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:22:06,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452096383] [2022-10-16 14:22:06,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:22:06,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:22:06,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:22:06,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:22:06,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 14:22:07,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:22:07,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:22:07,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 211 conjunts are in the unsatisfiable core [2022-10-16 14:22:07,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:22:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 32466 backedges. 0 proven. 32448 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:22:08,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:22:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32466 backedges. 0 proven. 32448 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:22:51,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452096383] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:22:51,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:22:51,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 211, 211] total 424 [2022-10-16 14:22:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120757461] [2022-10-16 14:22:51,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:22:51,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 425 states [2022-10-16 14:22:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:22:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 425 interpolants. [2022-10-16 14:22:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45157, Invalid=135043, Unknown=0, NotChecked=0, Total=180200 [2022-10-16 14:22:51,351 INFO L87 Difference]: Start difference. First operand 654 states and 657 transitions. Second operand has 425 states, 424 states have (on average 3.0235849056603774) internal successors, (1282), 424 states have internal predecessors, (1282), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:23:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:23:43,197 INFO L93 Difference]: Finished difference Result 1292 states and 1400 transitions. [2022-10-16 14:23:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 424 states. [2022-10-16 14:23:43,199 INFO L78 Accepts]: Start accepts. Automaton has has 425 states, 424 states have (on average 3.0235849056603774) internal successors, (1282), 424 states have internal predecessors, (1282), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 663 [2022-10-16 14:23:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:23:43,206 INFO L225 Difference]: With dead ends: 1292 [2022-10-16 14:23:43,207 INFO L226 Difference]: Without dead ends: 1291 [2022-10-16 14:23:43,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1751 GetRequests, 1118 SyntacticMatches, 0 SemanticMatches, 633 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89240 ImplicationChecksByTransitivity, 87.6s TimeCoverageRelationStatistics Valid=111834, Invalid=290756, Unknown=0, NotChecked=0, Total=402590 [2022-10-16 14:23:43,234 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2372 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 14:23:43,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 961 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 14:23:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-10-16 14:23:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1290. [2022-10-16 14:23:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1285 states have (on average 1.001556420233463) internal successors, (1287), 1285 states have internal predecessors, (1287), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:23:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1293 transitions. [2022-10-16 14:23:43,287 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1293 transitions. Word has length 663 [2022-10-16 14:23:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:23:43,288 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1293 transitions. [2022-10-16 14:23:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 425 states, 424 states have (on average 3.0235849056603774) internal successors, (1282), 424 states have internal predecessors, (1282), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:23:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1293 transitions. [2022-10-16 14:23:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2022-10-16 14:23:43,355 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:23:43,356 INFO L195 NwaCegarLoop]: trace histogram [211, 211, 210, 210, 210, 210, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:23:43,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 14:23:43,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 14:23:43,572 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 14:23:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:23:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash -707899432, now seen corresponding path program 3 times [2022-10-16 14:23:43,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:23:43,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868181080] [2022-10-16 14:23:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:23:43,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:23:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat