/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_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:39:14,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:39:14,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:39:14,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:39:14,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:39:14,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:39:14,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:39:14,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:39:14,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:39:14,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:39:14,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:39:14,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:39:14,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:39:14,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:39:14,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:39:14,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:39:14,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:39:14,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:39:14,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:39:14,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:39:14,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:39:14,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:39:14,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:39:14,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:39:14,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:39:14,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:39:14,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:39:14,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:39:14,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:39:14,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:39:14,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:39:14,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:39:14,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:39:14,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:39:14,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:39:14,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:39:14,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:39:14,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:39:14,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:39:14,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:39:14,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:39:14,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:39:14,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:39:14,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:39:14,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:39:14,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:39:14,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:39:14,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:39:14,533 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:39:14,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:39:14,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:39:14,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:39:14,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:39:14,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:39:14,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:39:14,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:39:14,534 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:39:14,535 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:39:14,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:39:14,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:39:14,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:39:14,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:39:14,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:39:14,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:39:14,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:39:14,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:39:14,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:39:14,538 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:39:14,538 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:39:14,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:39:14,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:39:14,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:39:14,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:39:14,733 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:39:14,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound100.c [2022-01-10 20:39:14,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d53d395/f02b7735a9724dd0b9a22b25b1e369ce/FLAG33bc56480 [2022-01-10 20:39:15,095 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:39:15,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound100.c [2022-01-10 20:39:15,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d53d395/f02b7735a9724dd0b9a22b25b1e369ce/FLAG33bc56480 [2022-01-10 20:39:15,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d53d395/f02b7735a9724dd0b9a22b25b1e369ce [2022-01-10 20:39:15,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:39:15,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:39:15,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:39:15,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:39:15,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:39:15,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f42111e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15, skipping insertion in model container [2022-01-10 20:39:15,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:39:15,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:39:15,614 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/egcd3-ll_unwindbound100.c[490,503] [2022-01-10 20:39:15,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:39:15,646 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:39:15,659 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/egcd3-ll_unwindbound100.c[490,503] [2022-01-10 20:39:15,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:39:15,677 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:39:15,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15 WrapperNode [2022-01-10 20:39:15,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:39:15,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:39:15,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:39:15,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:39:15,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,713 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2022-01-10 20:39:15,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:39:15,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:39:15,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:39:15,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:39:15,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:39:15,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:39:15,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:39:15,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:39:15,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (1/1) ... [2022-01-10 20:39:15,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:39:15,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:15,788 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 20:39:15,824 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 20:39:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:39:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:39:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:39:15,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:39:15,884 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:39:15,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:39:17,322 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:39:17,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:39:17,327 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 20:39:17,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:39:17 BoogieIcfgContainer [2022-01-10 20:39:17,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:39:17,328 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:39:17,328 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:39:17,329 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:39:17,332 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:39:17" (1/1) ... [2022-01-10 20:39:17,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:39:17 BasicIcfg [2022-01-10 20:39:17,436 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:39:17,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:39:17,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:39:17,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:39:17,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:39:15" (1/4) ... [2022-01-10 20:39:17,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acb2fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:39:17, skipping insertion in model container [2022-01-10 20:39:17,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:39:15" (2/4) ... [2022-01-10 20:39:17,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acb2fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:39:17, skipping insertion in model container [2022-01-10 20:39:17,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:39:17" (3/4) ... [2022-01-10 20:39:17,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acb2fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:39:17, skipping insertion in model container [2022-01-10 20:39:17,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:39:17" (4/4) ... [2022-01-10 20:39:17,442 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound100.cTransformedIcfg [2022-01-10 20:39:17,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:39:17,446 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 20:39:17,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:39:17,488 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 20:39:17,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 20:39:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 35 states have (on average 1.6) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:39:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:39:17,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:17,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:17,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash -30530356, now seen corresponding path program 1 times [2022-01-10 20:39:17,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:17,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903563134] [2022-01-10 20:39:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:17,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:17,623 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 20:39:17,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:17,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903563134] [2022-01-10 20:39:17,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903563134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:17,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:17,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:39:17,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414085271] [2022-01-10 20:39:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:17,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:39:17,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:39:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:39:17,652 INFO L87 Difference]: Start difference. First operand has 41 states, 35 states have (on average 1.6) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 20:39:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:17,671 INFO L93 Difference]: Finished difference Result 79 states and 108 transitions. [2022-01-10 20:39:17,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:39:17,672 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 20:39:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:17,677 INFO L225 Difference]: With dead ends: 79 [2022-01-10 20:39:17,677 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 20:39:17,680 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 20:39:17,683 INFO L933 BasicCegarLoop]: 46 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, 46 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 20:39:17,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:39:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 20:39:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-10 20:39:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 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 20:39:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-01-10 20:39:17,716 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 10 [2022-01-10 20:39:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:17,717 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-01-10 20:39:17,717 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 20:39:17,718 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-01-10 20:39:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 20:39:17,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:17,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:17,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:39:17,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1865441364, now seen corresponding path program 1 times [2022-01-10 20:39:17,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:17,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281741229] [2022-01-10 20:39:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:17,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:17,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:17,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206202] [2022-01-10 20:39:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:17,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:17,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:17,797 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 20:39:17,821 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 20:39:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:17,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 20:39:17,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:18,159 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 20:39:18,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:18,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:18,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281741229] [2022-01-10 20:39:18,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:18,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206202] [2022-01-10 20:39:18,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:18,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:18,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:39:18,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186453996] [2022-01-10 20:39:18,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:18,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:39:18,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:39:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:39:18,167 INFO L87 Difference]: Start difference. First operand 37 states and 42 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 20:39:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:18,223 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-01-10 20:39:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:39:18,224 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 20:39:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:18,226 INFO L225 Difference]: With dead ends: 43 [2022-01-10 20:39:18,226 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 20:39:18,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 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 20:39:18,228 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:18,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:39:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 20:39:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-01-10 20:39:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 38 states have internal predecessors, (44), 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 20:39:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-01-10 20:39:18,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 11 [2022-01-10 20:39:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:18,242 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-01-10 20:39:18,242 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 20:39:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-01-10 20:39:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 20:39:18,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:18,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:18,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 20:39:18,479 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 20:39:18,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1993037818, now seen corresponding path program 1 times [2022-01-10 20:39:18,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:18,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579176914] [2022-01-10 20:39:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:18,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:18,523 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:18,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224513529] [2022-01-10 20:39:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:18,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:18,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:18,527 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 20:39:18,553 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 20:39:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:18,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 20:39:18,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:19,017 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 20:39:19,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:19,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:19,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579176914] [2022-01-10 20:39:19,018 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:19,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224513529] [2022-01-10 20:39:19,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224513529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:19,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:19,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:39:19,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449472959] [2022-01-10 20:39:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:19,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:39:19,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:39:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:39:19,020 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 20:39:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:19,199 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-01-10 20:39:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:39:19,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 20:39:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:19,203 INFO L225 Difference]: With dead ends: 44 [2022-01-10 20:39:19,203 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 20:39:19,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:39:19,204 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:19,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 137 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2022-01-10 20:39:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 20:39:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-10 20:39:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 39 states have internal predecessors, (45), 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 20:39:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-01-10 20:39:19,208 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 12 [2022-01-10 20:39:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:19,208 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-01-10 20:39:19,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 20:39:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-01-10 20:39:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 20:39:19,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:19,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:19,228 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 20:39:19,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 20:39:19,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash -769901580, now seen corresponding path program 1 times [2022-01-10 20:39:19,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:19,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920081528] [2022-01-10 20:39:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:19,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:19,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:19,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55001138] [2022-01-10 20:39:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:19,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:19,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:19,453 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 20:39:19,454 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 20:39:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:19,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:39:19,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:19,964 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 20:39:19,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:19,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920081528] [2022-01-10 20:39:19,964 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55001138] [2022-01-10 20:39:19,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55001138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:19,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:19,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:39:19,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338864476] [2022-01-10 20:39:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:19,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:39:19,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:39:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:39:19,966 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:39:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:20,294 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2022-01-10 20:39:20,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:39:20,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 20:39:20,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:20,295 INFO L225 Difference]: With dead ends: 82 [2022-01-10 20:39:20,295 INFO L226 Difference]: Without dead ends: 80 [2022-01-10 20:39:20,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 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 20:39:20,296 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 155 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:20,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 111 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:39:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-10 20:39:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 55. [2022-01-10 20:39:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.34) internal successors, (67), 54 states have internal predecessors, (67), 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 20:39:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2022-01-10 20:39:20,302 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 16 [2022-01-10 20:39:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:20,302 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2022-01-10 20:39:20,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:39:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2022-01-10 20:39:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 20:39:20,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:20,303 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:20,309 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 20:39:20,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:20,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 852132389, now seen corresponding path program 1 times [2022-01-10 20:39:20,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:20,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119837588] [2022-01-10 20:39:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:20,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:20,523 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:20,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416074117] [2022-01-10 20:39:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:20,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:20,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:20,525 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 20:39:20,526 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 20:39:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:20,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:39:20,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:39:20,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:20,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:20,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119837588] [2022-01-10 20:39:20,902 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:20,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416074117] [2022-01-10 20:39:20,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416074117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:20,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:20,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:39:20,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313355051] [2022-01-10 20:39:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:20,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:39:20,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:39:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:39:20,903 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 20:39:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:20,948 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-01-10 20:39:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:39:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-01-10 20:39:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:20,950 INFO L225 Difference]: With dead ends: 88 [2022-01-10 20:39:20,950 INFO L226 Difference]: Without dead ends: 57 [2022-01-10 20:39:20,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:39:20,951 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:20,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:39:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-10 20:39:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-01-10 20:39:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 56 states have internal predecessors, (69), 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 20:39:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2022-01-10 20:39:20,957 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 17 [2022-01-10 20:39:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:20,957 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2022-01-10 20:39:20,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 20:39:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2022-01-10 20:39:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 20:39:20,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:20,958 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 20:39:20,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 20:39:21,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:21,159 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:21,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1141006281, now seen corresponding path program 1 times [2022-01-10 20:39:21,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:21,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171117978] [2022-01-10 20:39:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:21,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:21,190 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:21,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965582600] [2022-01-10 20:39:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:21,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:21,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:21,195 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 20:39:21,196 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 20:39:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:21,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:39:21,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:21,854 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 20:39:21,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:21,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171117978] [2022-01-10 20:39:21,854 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965582600] [2022-01-10 20:39:21,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965582600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:21,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:21,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:39:21,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390347012] [2022-01-10 20:39:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:21,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:39:21,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:39:21,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:39:21,856 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 20:39:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:22,342 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2022-01-10 20:39:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:39:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 20:39:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:22,343 INFO L225 Difference]: With dead ends: 82 [2022-01-10 20:39:22,343 INFO L226 Difference]: Without dead ends: 80 [2022-01-10 20:39:22,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 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 20:39:22,344 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 148 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:22,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 100 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:39:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-10 20:39:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 57. [2022-01-10 20:39:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 56 states have internal predecessors, (68), 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 20:39:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-01-10 20:39:22,351 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-01-10 20:39:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:22,351 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-01-10 20:39:22,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 20:39:22,351 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-01-10 20:39:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 20:39:22,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:22,352 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:22,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 20:39:22,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:22,575 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2043146051, now seen corresponding path program 1 times [2022-01-10 20:39:22,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:22,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104484318] [2022-01-10 20:39:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:22,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:22,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:22,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023441877] [2022-01-10 20:39:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:22,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:22,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:22,592 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 20:39:22,593 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 20:39:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:22,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 20:39:22,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:23,332 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 20:39:23,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:39:23,642 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 20:39:23,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:23,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104484318] [2022-01-10 20:39:23,643 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:23,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023441877] [2022-01-10 20:39:23,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023441877] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:39:23,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:39:23,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-10 20:39:23,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547971470] [2022-01-10 20:39:23,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:39:23,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:39:23,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:39:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:39:23,644 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:39:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:23,847 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2022-01-10 20:39:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 20:39:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 20:39:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:23,848 INFO L225 Difference]: With dead ends: 78 [2022-01-10 20:39:23,848 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 20:39:23,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:39:23,849 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 26 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:23,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 242 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 20:39:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 20:39:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2022-01-10 20:39:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 67 states have internal predecessors, (83), 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 20:39:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2022-01-10 20:39:23,856 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 18 [2022-01-10 20:39:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:23,856 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2022-01-10 20:39:23,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:39:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2022-01-10 20:39:23,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 20:39:23,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:23,857 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:23,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 20:39:24,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:24,062 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:24,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1085912241, now seen corresponding path program 1 times [2022-01-10 20:39:24,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:24,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400734383] [2022-01-10 20:39:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:24,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:24,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:24,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142984963] [2022-01-10 20:39:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:24,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:24,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:24,091 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 20:39:24,096 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 20:39:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:24,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:39:24,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:39:24,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:39:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:39:24,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:24,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400734383] [2022-01-10 20:39:24,965 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:24,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142984963] [2022-01-10 20:39:24,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142984963] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:39:24,965 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:39:24,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-10 20:39:24,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213248591] [2022-01-10 20:39:24,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:39:24,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 20:39:24,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 20:39:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:39:24,967 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 20:39:26,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:39:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:26,916 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2022-01-10 20:39:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:39:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 20:39:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:26,917 INFO L225 Difference]: With dead ends: 115 [2022-01-10 20:39:26,917 INFO L226 Difference]: Without dead ends: 111 [2022-01-10 20:39:26,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-10 20:39:26,918 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 391 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:26,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 69 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 20:39:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-10 20:39:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 75. [2022-01-10 20:39:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 74 states have internal predecessors, (92), 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 20:39:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-01-10 20:39:26,926 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 19 [2022-01-10 20:39:26,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:26,926 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-01-10 20:39:26,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 20:39:26,927 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-01-10 20:39:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 20:39:26,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:26,927 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 20:39:26,934 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 20:39:27,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:27,132 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1290338214, now seen corresponding path program 1 times [2022-01-10 20:39:27,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:27,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747493082] [2022-01-10 20:39:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:27,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:27,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:27,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055859806] [2022-01-10 20:39:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:27,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:27,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:27,154 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 20:39:27,155 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 20:39:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:27,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:39:27,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:34,934 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 20:39:34,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:34,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:34,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747493082] [2022-01-10 20:39:34,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:34,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055859806] [2022-01-10 20:39:34,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055859806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:34,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:34,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 20:39:34,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804655339] [2022-01-10 20:39:34,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:34,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 20:39:34,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:34,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 20:39:34,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:39:34,936 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 20:39:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:35,163 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2022-01-10 20:39:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:39:35,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 20:39:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:35,165 INFO L225 Difference]: With dead ends: 91 [2022-01-10 20:39:35,165 INFO L226 Difference]: Without dead ends: 89 [2022-01-10 20:39:35,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:39:35,165 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:35,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 145 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-01-10 20:39:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-10 20:39:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2022-01-10 20:39:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 81 states have internal predecessors, (100), 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 20:39:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-01-10 20:39:35,177 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 20 [2022-01-10 20:39:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:35,178 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-01-10 20:39:35,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 20:39:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-01-10 20:39:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 20:39:35,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:35,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:35,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-10 20:39:35,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-10 20:39:35,388 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1230562397, now seen corresponding path program 1 times [2022-01-10 20:39:35,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:35,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502840806] [2022-01-10 20:39:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:35,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:35,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:35,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508172664] [2022-01-10 20:39:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:35,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:35,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:35,421 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:39:35,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-10 20:39:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:35,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 20:39:35,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:35,820 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 20:39:35,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:35,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:35,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502840806] [2022-01-10 20:39:35,820 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:35,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508172664] [2022-01-10 20:39:35,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508172664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:35,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:35,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:39:35,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099146195] [2022-01-10 20:39:35,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:35,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:39:35,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:35,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:39:35,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:39:35,822 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 20:39:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:36,263 INFO L93 Difference]: Finished difference Result 145 states and 184 transitions. [2022-01-10 20:39:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:39:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2022-01-10 20:39:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:36,270 INFO L225 Difference]: With dead ends: 145 [2022-01-10 20:39:36,271 INFO L226 Difference]: Without dead ends: 143 [2022-01-10 20:39:36,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:39:36,271 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 86 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:36,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 106 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 20:39:36,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-10 20:39:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2022-01-10 20:39:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.305263157894737) internal successors, (124), 99 states have internal predecessors, (124), 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 20:39:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2022-01-10 20:39:36,289 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 22 [2022-01-10 20:39:36,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:36,290 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2022-01-10 20:39:36,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 20:39:36,290 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2022-01-10 20:39:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 20:39:36,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:36,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:36,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-10 20:39:36,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 20:39:36,497 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:36,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1138960522, now seen corresponding path program 1 times [2022-01-10 20:39:36,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:36,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291901227] [2022-01-10 20:39:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:36,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:36,516 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:36,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515266344] [2022-01-10 20:39:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:36,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:36,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:36,518 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:39:36,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-10 20:39:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:36,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 20:39:36,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:39:36,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:39:36,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:36,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291901227] [2022-01-10 20:39:36,914 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:36,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515266344] [2022-01-10 20:39:36,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515266344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:39:36,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:39:36,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:39:36,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112765917] [2022-01-10 20:39:36,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:39:36,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:39:36,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:39:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:39:36,915 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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 20:39:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:36,958 INFO L93 Difference]: Finished difference Result 171 states and 215 transitions. [2022-01-10 20:39:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:39:36,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 20:39:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:36,959 INFO L225 Difference]: With dead ends: 171 [2022-01-10 20:39:36,959 INFO L226 Difference]: Without dead ends: 100 [2022-01-10 20:39:36,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:39:36,960 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:36,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 182 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-01-10 20:39:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-10 20:39:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-01-10 20:39:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.2947368421052632) internal successors, (123), 99 states have internal predecessors, (123), 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 20:39:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2022-01-10 20:39:36,975 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 23 [2022-01-10 20:39:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:36,975 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2022-01-10 20:39:36,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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 20:39:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2022-01-10 20:39:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 20:39:36,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:36,977 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:36,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-10 20:39:37,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 20:39:37,193 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1800858947, now seen corresponding path program 1 times [2022-01-10 20:39:37,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:37,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919420767] [2022-01-10 20:39:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:37,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:37,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393546017] [2022-01-10 20:39:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:37,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:37,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:37,216 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:39:37,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-10 20:39:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:37,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 20:39:37,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:39:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:39:38,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:39:40,959 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| Int) (|aux_div_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7| Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63| Int)) (or (> 0 |aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65|) (>= |aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| 2) (> 0 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63|) (>= |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63| 2147483648) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7| |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| (mod (+ (mod (* (+ (* 18446744071562067968 |aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65|) (* |aux_div_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| 4294967296) |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7|) 18446744073709551616) (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~s~0#1Int| (+ (* 18446744069414584320 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| 2147483648) 2)) |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int|)) 18446744073709551616)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7|)))) is different from false [2022-01-10 20:39:46,986 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| Int) (|aux_div_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7| Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63| Int)) (or (> 0 |aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65|) (>= |aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| 2) (> 0 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63|) (>= |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63| 2147483648) (< 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7|) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7|)) (let ((.cse0 (+ (* 18446744069414584320 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| 2147483648) 2)) |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int|))) (= .cse0 (mod (+ (mod (* (+ (* 18446744071562067968 |aux_mod_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65|) (* |aux_div_aux_div_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63_65| 4294967296) |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int_63|) |v_ULTIMATE.start_ULTIMATE.start_main_~p~0#1Int_7|) 18446744073709551616) (mod .cse0 18446744073709551616)) 18446744073709551616))))) (= |c_ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 0)) is different from false [2022-01-10 20:39:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-01-10 20:39:47,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:39:47,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919420767] [2022-01-10 20:39:47,130 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:39:47,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393546017] [2022-01-10 20:39:47,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393546017] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:39:47,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:39:47,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-10 20:39:47,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147957327] [2022-01-10 20:39:47,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:39:47,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 20:39:47,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:39:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 20:39:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=52, Unknown=2, NotChecked=30, Total=110 [2022-01-10 20:39:47,131 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 20:39:52,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:39:52,116 INFO L93 Difference]: Finished difference Result 174 states and 217 transitions. [2022-01-10 20:39:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:39:52,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 20:39:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:39:52,117 INFO L225 Difference]: With dead ends: 174 [2022-01-10 20:39:52,117 INFO L226 Difference]: Without dead ends: 172 [2022-01-10 20:39:52,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=74, Invalid=141, Unknown=3, NotChecked=54, Total=272 [2022-01-10 20:39:52,118 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 239 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 20:39:52,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 215 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 96 Invalid, 0 Unknown, 181 Unchecked, 0.4s Time] [2022-01-10 20:39:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-10 20:39:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 131. [2022-01-10 20:39:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.3333333333333333) internal successors, (168), 130 states have internal predecessors, (168), 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 20:39:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 168 transitions. [2022-01-10 20:39:52,135 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 168 transitions. Word has length 23 [2022-01-10 20:39:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:39:52,135 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 168 transitions. [2022-01-10 20:39:52,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 20:39:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 168 transitions. [2022-01-10 20:39:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 20:39:52,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:39:52,137 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:39:52,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-10 20:39:52,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-10 20:39:52,341 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:39:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:39:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash 246409408, now seen corresponding path program 1 times [2022-01-10 20:39:52,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:39:52,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572218338] [2022-01-10 20:39:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:52,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:39:52,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:39:52,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097742316] [2022-01-10 20:39:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:39:52,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:39:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:39:52,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:39:52,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-10 20:39:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:39:52,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-10 20:39:52,763 INFO L286 TraceCheckSpWp]: Computing forward predicates...