/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:38:20,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:38:20,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:38:20,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:38:20,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:38:20,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:38:20,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:38:20,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:38:20,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:38:20,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:38:20,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:38:20,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:38:20,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:38:20,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:38:20,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:38:20,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:38:20,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:38:20,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:38:20,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:38:20,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:38:20,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:38:20,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:38:20,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:38:20,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:38:20,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:38:20,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:38:20,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:38:20,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:38:20,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:38:20,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:38:20,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:38:20,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:38:20,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:38:20,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:38:20,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:38:20,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:38:20,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:38:20,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:38:20,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:38:20,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:38:20,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:38:20,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:38:20,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:38:20,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:38:20,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:38:20,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:38:20,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:38:20,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:38:20,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:38:20,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:38:20,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:38:20,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:38:20,263 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:38:20,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:38:20,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:38:20,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:38:20,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:38:20,264 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:38:20,264 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:38:20,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:38:20,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:38:20,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:38:20,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:38:20,488 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:38:20,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c [2022-01-11 02:38:20,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ac1e6dc/4bb058f44b4043b08a6803014ffbaee2/FLAG4226773fe [2022-01-11 02:38:20,913 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:38:20,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c [2022-01-11 02:38:20,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ac1e6dc/4bb058f44b4043b08a6803014ffbaee2/FLAG4226773fe [2022-01-11 02:38:21,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ac1e6dc/4bb058f44b4043b08a6803014ffbaee2 [2022-01-11 02:38:21,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:38:21,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:38:21,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:38:21,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:38:21,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:38:21,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383fad03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21, skipping insertion in model container [2022-01-11 02:38:21,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:38:21,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:38:21,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c[526,539] [2022-01-11 02:38:21,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:38:21,508 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:38:21,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c[526,539] [2022-01-11 02:38:21,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:38:21,549 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:38:21,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21 WrapperNode [2022-01-11 02:38:21,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:38:21,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:38:21,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:38:21,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:38:21,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,586 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 90 [2022-01-11 02:38:21,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:38:21,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:38:21,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:38:21,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:38:21,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:38:21,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:38:21,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:38:21,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:38:21,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:21,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:38:21,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:38:21,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:38:21,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:38:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:38:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:38:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:38:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:38:21,731 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:38:21,732 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:38:21,949 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:38:21,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:38:21,953 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:38:21,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:38:21 BoogieIcfgContainer [2022-01-11 02:38:21,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:38:21,955 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:38:21,955 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:38:21,956 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:38:21,958 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:38:21" (1/1) ... [2022-01-11 02:38:22,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:38:22 BasicIcfg [2022-01-11 02:38:22,024 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:38:22,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:38:22,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:38:22,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:38:22,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:38:21" (1/4) ... [2022-01-11 02:38:22,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0a084b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:38:22, skipping insertion in model container [2022-01-11 02:38:22,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:38:21" (2/4) ... [2022-01-11 02:38:22,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0a084b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:38:22, skipping insertion in model container [2022-01-11 02:38:22,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:38:21" (3/4) ... [2022-01-11 02:38:22,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0a084b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:38:22, skipping insertion in model container [2022-01-11 02:38:22,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:38:22" (4/4) ... [2022-01-11 02:38:22,029 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.cTransformedIcfg [2022-01-11 02:38:22,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:38:22,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-11 02:38:22,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:38:22,066 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:38:22,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-11 02:38:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-11 02:38:22,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:22,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:22,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash 735656298, now seen corresponding path program 1 times [2022-01-11 02:38:22,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:22,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592796176] [2022-01-11 02:38:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:22,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:22,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:38:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592796176] [2022-01-11 02:38:22,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592796176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:38:22,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:38:22,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:38:22,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521435662] [2022-01-11 02:38:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:38:22,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:38:22,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:38:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:38:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:38:22,270 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:38:22,292 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2022-01-11 02:38:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:38:22,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-11 02:38:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:38:22,299 INFO L225 Difference]: With dead ends: 79 [2022-01-11 02:38:22,300 INFO L226 Difference]: Without dead ends: 37 [2022-01-11 02:38:22,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:38:22,306 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:38:22,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:38:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-11 02:38:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-11 02:38:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-01-11 02:38:22,338 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 7 [2022-01-11 02:38:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:38:22,339 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-01-11 02:38:22,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,340 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-01-11 02:38:22,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-11 02:38:22,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:22,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:22,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:38:22,341 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 736579819, now seen corresponding path program 1 times [2022-01-11 02:38:22,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:22,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840232264] [2022-01-11 02:38:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:22,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:22,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:38:22,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840232264] [2022-01-11 02:38:22,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840232264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:38:22,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:38:22,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:38:22,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141530349] [2022-01-11 02:38:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:38:22,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:38:22,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:38:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:38:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:38:22,421 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:38:22,510 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2022-01-11 02:38:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:38:22,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-11 02:38:22,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:38:22,514 INFO L225 Difference]: With dead ends: 57 [2022-01-11 02:38:22,514 INFO L226 Difference]: Without dead ends: 55 [2022-01-11 02:38:22,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:38:22,518 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:38:22,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:38:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-11 02:38:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2022-01-11 02:38:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-01-11 02:38:22,531 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2022-01-11 02:38:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:38:22,531 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-01-11 02:38:22,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-01-11 02:38:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:38:22,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:22,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:22,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:38:22,535 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash -816361133, now seen corresponding path program 1 times [2022-01-11 02:38:22,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:22,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292518416] [2022-01-11 02:38:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:22,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:22,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:38:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292518416] [2022-01-11 02:38:22,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292518416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:38:22,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:38:22,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:38:22,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048918594] [2022-01-11 02:38:22,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:38:22,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:38:22,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:38:22,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:38:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:38:22,638 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:38:22,735 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-01-11 02:38:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:38:22,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-11 02:38:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:38:22,737 INFO L225 Difference]: With dead ends: 55 [2022-01-11 02:38:22,737 INFO L226 Difference]: Without dead ends: 53 [2022-01-11 02:38:22,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:38:22,743 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:38:22,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:38:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-11 02:38:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2022-01-11 02:38:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-01-11 02:38:22,748 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 9 [2022-01-11 02:38:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:38:22,749 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-01-11 02:38:22,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-01-11 02:38:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:38:22,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:22,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:22,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:38:22,750 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1456003483, now seen corresponding path program 1 times [2022-01-11 02:38:22,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:22,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228207645] [2022-01-11 02:38:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:22,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:22,764 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:38:22,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870539068] [2022-01-11 02:38:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:22,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:22,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:38:22,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:38:22,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:38:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:22,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:38:22,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:38:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:22,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:38:22,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:38:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228207645] [2022-01-11 02:38:22,899 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:38:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870539068] [2022-01-11 02:38:22,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870539068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:38:22,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:38:22,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:38:22,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112154120] [2022-01-11 02:38:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:38:22,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:38:22,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:38:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:38:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:38:22,901 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:38:23,006 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-01-11 02:38:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:38:23,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-11 02:38:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:38:23,007 INFO L225 Difference]: With dead ends: 76 [2022-01-11 02:38:23,007 INFO L226 Difference]: Without dead ends: 53 [2022-01-11 02:38:23,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:38:23,008 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:38:23,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 57 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:38:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-11 02:38:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2022-01-11 02:38:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2022-01-11 02:38:23,014 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 11 [2022-01-11 02:38:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:38:23,014 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-01-11 02:38:23,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-01-11 02:38:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:38:23,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:23,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:23,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:38:23,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:23,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:23,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1352501543, now seen corresponding path program 1 times [2022-01-11 02:38:23,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:23,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628508903] [2022-01-11 02:38:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:23,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:23,245 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:38:23,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870026115] [2022-01-11 02:38:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:23,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:23,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:38:23,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:38:23,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:38:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:23,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-11 02:38:23,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:38:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:23,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:38:23,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:38:23,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628508903] [2022-01-11 02:38:23,791 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:38:23,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870026115] [2022-01-11 02:38:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870026115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:38:23,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:38:23,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 02:38:23,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215212828] [2022-01-11 02:38:23,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:38:23,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:38:23,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:38:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:38:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:38:23,793 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:38:24,177 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-01-11 02:38:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 02:38:24,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-11 02:38:24,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:38:24,178 INFO L225 Difference]: With dead ends: 53 [2022-01-11 02:38:24,178 INFO L226 Difference]: Without dead ends: 41 [2022-01-11 02:38:24,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-01-11 02:38:24,179 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 98 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:38:24,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 71 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:38:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-11 02:38:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-11 02:38:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-01-11 02:38:24,186 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 15 [2022-01-11 02:38:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:38:24,186 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-01-11 02:38:24,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-01-11 02:38:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 02:38:24,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:24,187 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:24,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:38:24,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:24,388 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2131547203, now seen corresponding path program 1 times [2022-01-11 02:38:24,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:24,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878437230] [2022-01-11 02:38:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:24,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:24,403 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:38:24,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416845097] [2022-01-11 02:38:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:24,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:24,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:38:24,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:38:24,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:38:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:24,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 02:38:24,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:38:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:24,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:38:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:24,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:38:24,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878437230] [2022-01-11 02:38:24,660 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:38:24,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416845097] [2022-01-11 02:38:24,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416845097] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:38:24,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:38:24,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-11 02:38:24,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897142480] [2022-01-11 02:38:24,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:38:24,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:38:24,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:38:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:38:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:38:24,664 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:26,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 02:38:28,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:38:31,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:38:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:38:31,615 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2022-01-11 02:38:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 02:38:31,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-11 02:38:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:38:31,617 INFO L225 Difference]: With dead ends: 102 [2022-01-11 02:38:31,617 INFO L226 Difference]: Without dead ends: 90 [2022-01-11 02:38:31,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:38:31,618 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 65 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 42 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-11 02:38:31,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 114 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 86 Invalid, 3 Unknown, 0 Unchecked, 6.8s Time] [2022-01-11 02:38:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-11 02:38:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2022-01-11 02:38:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.169811320754717) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-01-11 02:38:31,632 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 19 [2022-01-11 02:38:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:38:31,632 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-01-11 02:38:31,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-01-11 02:38:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 02:38:31,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:31,633 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:31,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:38:31,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:31,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash -900145791, now seen corresponding path program 1 times [2022-01-11 02:38:31,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:31,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755855909] [2022-01-11 02:38:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:31,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:31,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:38:31,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780958049] [2022-01-11 02:38:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:31,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:31,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:38:31,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:38:31,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:38:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:31,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 02:38:31,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:38:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 02:38:32,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:38:32,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:38:32,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755855909] [2022-01-11 02:38:32,300 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:38:32,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780958049] [2022-01-11 02:38:32,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780958049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:38:32,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:38:32,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:38:32,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389916398] [2022-01-11 02:38:32,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:38:32,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:38:32,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:38:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:38:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:38:32,301 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:38:32,388 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-01-11 02:38:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:38:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-11 02:38:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:38:32,389 INFO L225 Difference]: With dead ends: 76 [2022-01-11 02:38:32,389 INFO L226 Difference]: Without dead ends: 72 [2022-01-11 02:38:32,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:38:32,389 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 51 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:38:32,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 50 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:38:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-11 02:38:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2022-01-11 02:38:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 65 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2022-01-11 02:38:32,397 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 23 [2022-01-11 02:38:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:38:32,397 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2022-01-11 02:38:32,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:38:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2022-01-11 02:38:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-11 02:38:32,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:38:32,398 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:38:32,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 02:38:32,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:32,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-11 02:38:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:38:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1150542684, now seen corresponding path program 1 times [2022-01-11 02:38:32,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:38:32,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333797642] [2022-01-11 02:38:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:32,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:38:32,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:38:32,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062914710] [2022-01-11 02:38:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:38:32,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:38:32,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:38:32,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:38:32,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:38:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:38:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-11 02:38:32,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:38:40,113 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 2))) (let ((.cse0 (mod .cse2 4294967296)) (.cse1 (* 2 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| 2147483648)))) (and (= |c_ULTIMATE.start_ULTIMATE.start_main_~d~0#1Int| (div .cse0 2)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 1) (< (+ .cse1 .cse0) (+ (* (mod .cse2 2147483648) 2) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int| 1) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0) (<= (+ (* (mod |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 2147483648) 2) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (+ .cse1 |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|)))) is different from false [2022-01-11 02:38:59,375 WARN L228 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:38:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:38:59,555 INFO L328 TraceCheckSpWp]: Computing backward predicates...