/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_LAZY.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:46:28,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:46:28,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:46:28,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:46:28,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:46:28,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:46:28,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:46:28,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:46:28,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:46:28,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:46:28,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:46:28,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:46:28,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:46:28,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:46:28,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:46:28,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:46:28,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:46:28,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:46:28,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:46:28,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:46:28,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:46:28,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:46:28,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:46:28,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:46:28,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:46:28,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:46:28,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:46:28,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:46:28,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:46:28,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:46:28,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:46:28,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:46:28,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:46:28,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:46:28,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:46:28,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:46:28,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:46:28,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:46:28,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:46:28,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:46:28,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:46:28,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:46:28,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:46:28,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:46:28,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:46:28,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:46:28,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:46:28,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:46:28,624 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:46:28,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:46:28,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:46:28,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:46:28,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:46:28,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:46:28,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:46:28,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:46:28,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:46:28,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:46:28,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:46:28,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:46:28,626 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:46:28,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:46:28,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:46:28,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:46:28,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:46:28,628 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:46:28,628 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:46:28,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:46:28,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:46:28,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:46:28,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:46:28,858 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:46:28,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound10.c [2022-01-10 14:46:28,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a78a776a/1e79e1d8f56940cb845ab5b8f26bc35b/FLAGbd3c4abae [2022-01-10 14:46:29,223 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:46:29,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound10.c [2022-01-10 14:46:29,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a78a776a/1e79e1d8f56940cb845ab5b8f26bc35b/FLAGbd3c4abae [2022-01-10 14:46:29,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a78a776a/1e79e1d8f56940cb845ab5b8f26bc35b [2022-01-10 14:46:29,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:46:29,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:46:29,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:46:29,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:46:29,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:46:29,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d575f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29, skipping insertion in model container [2022-01-10 14:46:29,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:46:29,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:46:29,820 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/egcd-ll_unwindbound10.c[489,502] [2022-01-10 14:46:29,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:46:29,840 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:46:29,847 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/egcd-ll_unwindbound10.c[489,502] [2022-01-10 14:46:29,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:46:29,862 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:46:29,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29 WrapperNode [2022-01-10 14:46:29,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:46:29,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:46:29,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:46:29,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:46:29,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,893 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 98 [2022-01-10 14:46:29,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:46:29,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:46:29,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:46:29,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:46:29,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:46:29,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:46:29,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:46:29,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:46:29,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (1/1) ... [2022-01-10 14:46:29,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:46:29,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:29,976 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) [2022-01-10 14:46:29,995 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 [2022-01-10 14:46:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:46:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:46:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:46:30,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:46:30,073 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:46:30,074 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:46:31,529 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:46:31,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:46:31,537 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 14:46:31,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:46:31 BoogieIcfgContainer [2022-01-10 14:46:31,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:46:31,539 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:46:31,540 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:46:31,553 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:46:31,558 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:46:31" (1/1) ... [2022-01-10 14:46:31,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:46:31 BasicIcfg [2022-01-10 14:46:31,673 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:46:31,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:46:31,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:46:31,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:46:31,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:46:29" (1/4) ... [2022-01-10 14:46:31,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@868ac36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:46:31, skipping insertion in model container [2022-01-10 14:46:31,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:46:29" (2/4) ... [2022-01-10 14:46:31,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@868ac36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:46:31, skipping insertion in model container [2022-01-10 14:46:31,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:46:31" (3/4) ... [2022-01-10 14:46:31,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@868ac36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:46:31, skipping insertion in model container [2022-01-10 14:46:31,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:46:31" (4/4) ... [2022-01-10 14:46:31,679 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound10.cTransformedIcfg [2022-01-10 14:46:31,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:46:31,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-10 14:46:31,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:46:31,733 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 [2022-01-10 14:46:31,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-10 14:46:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.588235294117647) internal successors, (54), 41 states have internal predecessors, (54), 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) [2022-01-10 14:46:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:46:31,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:31,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:31,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2028738347, now seen corresponding path program 1 times [2022-01-10 14:46:31,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638395973] [2022-01-10 14:46:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:31,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:31,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:31,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638395973] [2022-01-10 14:46:31,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638395973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:31,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:31,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:46:31,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207829817] [2022-01-10 14:46:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:31,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:46:31,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:46:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:46:31,994 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.588235294117647) internal successors, (54), 41 states have internal predecessors, (54), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-10 14:46:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:32,013 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2022-01-10 14:46:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:46:32,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-01-10 14:46:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:32,025 INFO L225 Difference]: With dead ends: 81 [2022-01-10 14:46:32,026 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 14:46:32,028 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 [2022-01-10 14:46:32,033 INFO L933 BasicCegarLoop]: 44 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, 44 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 [2022-01-10 14:46:32,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:46:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 14:46:32,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-10 14:46:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 37 states have internal predecessors, (40), 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) [2022-01-10 14:46:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-01-10 14:46:32,067 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 10 [2022-01-10 14:46:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:32,068 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-01-10 14:46:32,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-10 14:46:32,070 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-01-10 14:46:32,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:46:32,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:32,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:32,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:46:32,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash -523386836, now seen corresponding path program 1 times [2022-01-10 14:46:32,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:32,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012755944] [2022-01-10 14:46:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:32,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:32,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:32,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080210392] [2022-01-10 14:46:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:32,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:32,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:32,168 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) [2022-01-10 14:46:32,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:46:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:46:32,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:32,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:46:32,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:32,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012755944] [2022-01-10 14:46:32,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080210392] [2022-01-10 14:46:32,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080210392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:32,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:32,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:46:32,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410775120] [2022-01-10 14:46:32,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:32,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:46:32,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:46:32,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:46:32,435 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-10 14:46:32,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:32,586 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-01-10 14:46:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:46:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-01-10 14:46:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:32,587 INFO L225 Difference]: With dead ends: 73 [2022-01-10 14:46:32,587 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 14:46:32,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:46:32,588 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:32,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 81 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:46:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 14:46:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2022-01-10 14:46:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 53 states have internal predecessors, (63), 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) [2022-01-10 14:46:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-01-10 14:46:32,595 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 10 [2022-01-10 14:46:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:32,595 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-01-10 14:46:32,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-10 14:46:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-01-10 14:46:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:46:32,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:32,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:32,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 14:46:32,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:32,796 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash 954842594, now seen corresponding path program 1 times [2022-01-10 14:46:32,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:32,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058713033] [2022-01-10 14:46:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:32,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:32,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:32,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058713033] [2022-01-10 14:46:32,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058713033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:32,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:32,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:46:32,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858834370] [2022-01-10 14:46:32,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:32,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:46:32,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:46:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:46:32,931 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2022-01-10 14:46:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:32,961 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-01-10 14:46:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:46:32,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 [2022-01-10 14:46:32,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:32,962 INFO L225 Difference]: With dead ends: 70 [2022-01-10 14:46:32,962 INFO L226 Difference]: Without dead ends: 56 [2022-01-10 14:46:32,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:46:32,963 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:32,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:46:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-10 14:46:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-10 14:46:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 55 states have internal predecessors, (65), 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) [2022-01-10 14:46:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-01-10 14:46:32,968 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 11 [2022-01-10 14:46:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:32,968 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-01-10 14:46:32,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2022-01-10 14:46:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-01-10 14:46:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 14:46:32,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:32,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:32,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:46:32,969 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash -463539342, now seen corresponding path program 1 times [2022-01-10 14:46:32,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:32,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437071057] [2022-01-10 14:46:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:32,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:33,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:33,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450761821] [2022-01-10 14:46:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:33,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:33,029 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) [2022-01-10 14:46:33,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:46:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:33,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 14:46:33,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:33,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:46:33,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:33,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437071057] [2022-01-10 14:46:33,664 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:33,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450761821] [2022-01-10 14:46:33,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450761821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:33,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:33,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:46:33,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581413005] [2022-01-10 14:46:33,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:33,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:46:33,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:33,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:46:33,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:46:33,666 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-01-10 14:46:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:34,070 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2022-01-10 14:46:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:46:34,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2022-01-10 14:46:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:34,072 INFO L225 Difference]: With dead ends: 68 [2022-01-10 14:46:34,072 INFO L226 Difference]: Without dead ends: 66 [2022-01-10 14:46:34,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:46:34,073 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 134 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:34,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 66 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:46:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-10 14:46:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2022-01-10 14:46:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 55 states have internal predecessors, (64), 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) [2022-01-10 14:46:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-01-10 14:46:34,086 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 12 [2022-01-10 14:46:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:34,086 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-01-10 14:46:34,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-01-10 14:46:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-01-10 14:46:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 14:46:34,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:34,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:34,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 14:46:34,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 14:46:34,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1215327864, now seen corresponding path program 1 times [2022-01-10 14:46:34,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:34,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320930763] [2022-01-10 14:46:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:34,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:34,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:34,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736306104] [2022-01-10 14:46:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:34,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:34,328 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) [2022-01-10 14:46:34,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 14:46:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:34,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 14:46:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:34,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:46:34,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:34,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320930763] [2022-01-10 14:46:34,786 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:34,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736306104] [2022-01-10 14:46:34,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736306104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:34,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:34,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:46:34,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165478021] [2022-01-10 14:46:34,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:34,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:46:34,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:46:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:46:34,787 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-01-10 14:46:35,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:35,134 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2022-01-10 14:46:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:46:35,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-01-10 14:46:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:35,137 INFO L225 Difference]: With dead ends: 102 [2022-01-10 14:46:35,138 INFO L226 Difference]: Without dead ends: 94 [2022-01-10 14:46:35,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:46:35,139 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 142 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:35,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 65 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:46:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-10 14:46:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2022-01-10 14:46:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 83 states have internal predecessors, (102), 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) [2022-01-10 14:46:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2022-01-10 14:46:35,160 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 14 [2022-01-10 14:46:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:35,161 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2022-01-10 14:46:35,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-01-10 14:46:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2022-01-10 14:46:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 14:46:35,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:35,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:35,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 14:46:35,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:35,385 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1488755590, now seen corresponding path program 1 times [2022-01-10 14:46:35,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:35,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416559772] [2022-01-10 14:46:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:35,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:35,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:35,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760516201] [2022-01-10 14:46:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:35,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:35,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:35,410 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) [2022-01-10 14:46:35,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 14:46:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:35,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 14:46:35,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:35,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:46:35,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:35,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416559772] [2022-01-10 14:46:35,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:35,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760516201] [2022-01-10 14:46:35,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760516201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:35,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:35,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:46:35,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069577778] [2022-01-10 14:46:35,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:35,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:46:35,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:46:35,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:46:35,532 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-01-10 14:46:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:35,710 INFO L93 Difference]: Finished difference Result 112 states and 133 transitions. [2022-01-10 14:46:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:46:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2022-01-10 14:46:35,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:35,711 INFO L225 Difference]: With dead ends: 112 [2022-01-10 14:46:35,711 INFO L226 Difference]: Without dead ends: 110 [2022-01-10 14:46:35,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:46:35,712 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:35,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 93 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 14:46:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-10 14:46:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2022-01-10 14:46:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.2891566265060241) internal successors, (107), 89 states have internal predecessors, (107), 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) [2022-01-10 14:46:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2022-01-10 14:46:35,725 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 18 [2022-01-10 14:46:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:35,726 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2022-01-10 14:46:35,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-01-10 14:46:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2022-01-10 14:46:35,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 14:46:35,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:35,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:35,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 14:46:35,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:35,950 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash -469976065, now seen corresponding path program 1 times [2022-01-10 14:46:35,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:35,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216075969] [2022-01-10 14:46:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:35,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:35,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:35,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013334264] [2022-01-10 14:46:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:35,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:35,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:35,988 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) [2022-01-10 14:46:36,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 14:46:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:36,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 14:46:36,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:36,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 14:46:36,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:36,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216075969] [2022-01-10 14:46:36,411 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:36,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013334264] [2022-01-10 14:46:36,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013334264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:46:36,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:46:36,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:46:36,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675533248] [2022-01-10 14:46:36,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:46:36,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:46:36,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:36,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:46:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:46:36,417 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-01-10 14:46:38,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:46:41,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:46:42,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:46:44,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:46:47,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 14:46:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:48,346 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2022-01-10 14:46:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 14:46:48,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2022-01-10 14:46:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:48,348 INFO L225 Difference]: With dead ends: 135 [2022-01-10 14:46:48,348 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 14:46:48,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:46:48,349 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 36 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:48,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 102 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 108 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2022-01-10 14:46:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 14:46:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2022-01-10 14:46:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 96 states have internal predecessors, (115), 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) [2022-01-10 14:46:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2022-01-10 14:46:48,361 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 20 [2022-01-10 14:46:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:48,361 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2022-01-10 14:46:48,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-01-10 14:46:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2022-01-10 14:46:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 14:46:48,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:48,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:48,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 14:46:48,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:48,563 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -404562011, now seen corresponding path program 1 times [2022-01-10 14:46:48,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917784537] [2022-01-10 14:46:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:48,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:48,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473116007] [2022-01-10 14:46:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:48,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:48,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:48,589 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) [2022-01-10 14:46:48,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 14:46:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:48,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 14:46:48,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:46:48,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:46:51,516 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| Int)) (= (mod (+ (mod (* 18446744073709551615 (mod (* |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 18446744073709551616)) 18446744073709551616) (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~s~0#1Int| (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int| (mod (* 18446744073709551615 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 18446744073709551616)) 18446744073709551616)) 18446744073709551616)) 18446744073709551616) 1)) is different from false [2022-01-10 14:46:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-10 14:46:51,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:51,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917784537] [2022-01-10 14:46:51,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:51,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473116007] [2022-01-10 14:46:51,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473116007] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:46:51,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:46:51,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2022-01-10 14:46:51,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162527950] [2022-01-10 14:46:51,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:46:51,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:46:51,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:51,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:46:51,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-01-10 14:46:51,775 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2022-01-10 14:46:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:51,937 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2022-01-10 14:46:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:46:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 20 [2022-01-10 14:46:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:51,939 INFO L225 Difference]: With dead ends: 107 [2022-01-10 14:46:51,939 INFO L226 Difference]: Without dead ends: 97 [2022-01-10 14:46:51,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=18, Unknown=1, NotChecked=8, Total=42 [2022-01-10 14:46:51,940 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 30 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:51,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 131 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 32 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2022-01-10 14:46:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-10 14:46:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2022-01-10 14:46:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 90 states have internal predecessors, (106), 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) [2022-01-10 14:46:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2022-01-10 14:46:51,952 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2022-01-10 14:46:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2022-01-10 14:46:51,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2022-01-10 14:46:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2022-01-10 14:46:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 14:46:51,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:51,953 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:51,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-10 14:46:52,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:52,154 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash 343444873, now seen corresponding path program 1 times [2022-01-10 14:46:52,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:52,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765918875] [2022-01-10 14:46:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:52,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:52,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:52,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758594756] [2022-01-10 14:46:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:52,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:52,184 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) [2022-01-10 14:46:52,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 14:46:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:52,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 14:46:52,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:46:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:52,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:46:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:46:52,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:46:52,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765918875] [2022-01-10 14:46:52,848 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 14:46:52,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758594756] [2022-01-10 14:46:52,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758594756] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:46:52,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 14:46:52,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 14:46:52,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447321117] [2022-01-10 14:46:52,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 14:46:52,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:46:52,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:46:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:46:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:46:52,849 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-01-10 14:46:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:46:53,134 INFO L93 Difference]: Finished difference Result 218 states and 254 transitions. [2022-01-10 14:46:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 14:46:53,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) Word has length 21 [2022-01-10 14:46:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:46:53,135 INFO L225 Difference]: With dead ends: 218 [2022-01-10 14:46:53,135 INFO L226 Difference]: Without dead ends: 192 [2022-01-10 14:46:53,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:46:53,136 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:46:53,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 189 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:46:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-01-10 14:46:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 154. [2022-01-10 14:46:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 147 states have (on average 1.2585034013605443) internal successors, (185), 153 states have internal predecessors, (185), 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) [2022-01-10 14:46:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 185 transitions. [2022-01-10 14:46:53,173 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 185 transitions. Word has length 21 [2022-01-10 14:46:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:46:53,173 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 185 transitions. [2022-01-10 14:46:53,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 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) [2022-01-10 14:46:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 185 transitions. [2022-01-10 14:46:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 14:46:53,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:46:53,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:46:53,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-10 14:46:53,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:53,379 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 14:46:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:46:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2057967787, now seen corresponding path program 1 times [2022-01-10 14:46:53,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:46:53,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445308794] [2022-01-10 14:46:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:53,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:46:53,400 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 14:46:53,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381806631] [2022-01-10 14:46:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:46:53,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:46:53,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:46:53,401 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) [2022-01-10 14:46:53,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 14:46:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:46:53,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 14:46:53,687 INFO L286 TraceCheckSpWp]: Computing forward predicates...