/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/lcm1_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:52:22,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:52:22,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:52:22,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:52:22,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:52:22,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:52:22,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:52:22,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:52:22,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:52:22,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:52:22,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:52:22,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:52:22,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:52:22,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:52:22,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:52:22,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:52:22,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:52:22,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:52:22,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:52:22,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:52:22,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:52:22,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:52:22,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:52:22,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:52:22,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:52:22,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:52:22,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:52:22,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:52:22,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:52:22,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:52:22,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:52:22,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:52:22,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:52:22,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:52:22,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:52:22,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:52:22,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:52:22,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:52:22,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:52:22,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:52:22,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:52:22,319 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 20:52:22,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:52:22,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:52:22,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:52:22,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:52:22,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:52:22,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:52:22,345 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:52:22,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:52:22,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:52:22,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:52:22,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:52:22,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:52:22,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:52:22,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:52:22,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:52:22,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:52:22,349 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:52:22,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:52:22,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:52:22,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:52:22,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:52:22,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:52:22,553 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:52:22,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_unwindbound5.c [2022-01-10 20:52:22,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67dcf5db4/8f30b3c7981f4f55b8efbef54592bfe2/FLAG7f9725efb [2022-01-10 20:52:22,931 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:52:22,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_unwindbound5.c [2022-01-10 20:52:22,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67dcf5db4/8f30b3c7981f4f55b8efbef54592bfe2/FLAG7f9725efb [2022-01-10 20:52:23,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67dcf5db4/8f30b3c7981f4f55b8efbef54592bfe2 [2022-01-10 20:52:23,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:52:23,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:52:23,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:52:23,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:52:23,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:52:23,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23, skipping insertion in model container [2022-01-10 20:52:23,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:52:23,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:52:23,499 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/lcm1_unwindbound5.c[552,565] [2022-01-10 20:52:23,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:52:23,523 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:52:23,531 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/lcm1_unwindbound5.c[552,565] [2022-01-10 20:52:23,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:52:23,545 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:52:23,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23 WrapperNode [2022-01-10 20:52:23,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:52:23,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:52:23,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:52:23,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:52:23,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,567 INFO L137 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 114 [2022-01-10 20:52:23,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:52:23,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:52:23,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:52:23,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:52:23,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:52:23,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:52:23,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:52:23,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:52:23,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (1/1) ... [2022-01-10 20:52:23,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:52:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:23,615 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 20:52:23,624 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 20:52:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:52:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:52:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:52:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:52:23,707 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:52:23,708 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:52:24,103 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:52:24,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:52:24,107 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 20:52:24,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:52:24 BoogieIcfgContainer [2022-01-10 20:52:24,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:52:24,109 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:52:24,109 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:52:24,110 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:52:24,112 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:52:24" (1/1) ... [2022-01-10 20:52:24,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:52:24 BasicIcfg [2022-01-10 20:52:24,206 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:52:24,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:52:24,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:52:24,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:52:24,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:52:23" (1/4) ... [2022-01-10 20:52:24,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310ee848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:52:24, skipping insertion in model container [2022-01-10 20:52:24,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:52:23" (2/4) ... [2022-01-10 20:52:24,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310ee848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:52:24, skipping insertion in model container [2022-01-10 20:52:24,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:52:24" (3/4) ... [2022-01-10 20:52:24,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310ee848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:52:24, skipping insertion in model container [2022-01-10 20:52:24,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:52:24" (4/4) ... [2022-01-10 20:52:24,213 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound5.cTransformedIcfg [2022-01-10 20:52:24,216 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:52:24,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 20:52:24,243 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:52:24,247 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 20:52:24,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 20:52:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 42 states have internal predecessors, (60), 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 20:52:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 20:52:24,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:24,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:52:24,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:24,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:24,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1761100336, now seen corresponding path program 1 times [2022-01-10 20:52:24,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:24,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367475540] [2022-01-10 20:52:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:24,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:24,368 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 20:52:24,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367475540] [2022-01-10 20:52:24,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367475540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:24,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:24,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:52:24,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110157675] [2022-01-10 20:52:24,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:24,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:52:24,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:24,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:52:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:52:24,418 INFO L87 Difference]: Start difference. First operand has 43 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 42 states have internal predecessors, (60), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:52:24,439 INFO L93 Difference]: Finished difference Result 83 states and 116 transitions. [2022-01-10 20:52:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:52:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 20:52:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:52:24,445 INFO L225 Difference]: With dead ends: 83 [2022-01-10 20:52:24,445 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 20:52:24,448 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 20:52:24,450 INFO L933 BasicCegarLoop]: 48 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, 48 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 20:52:24,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:52:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 20:52:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-01-10 20:52:24,475 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 20:52:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-01-10 20:52:24,477 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2022-01-10 20:52:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:52:24,477 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-01-10 20:52:24,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-01-10 20:52:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 20:52:24,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:24,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:52:24,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:52:24,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash -57059858, now seen corresponding path program 1 times [2022-01-10 20:52:24,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:24,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528950883] [2022-01-10 20:52:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:24,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:24,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:52:24,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184323855] [2022-01-10 20:52:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:24,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:24,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:24,532 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 20:52:24,533 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 20:52:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:24,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:52:24,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:52:24,806 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 20:52:24,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:52:24,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:24,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528950883] [2022-01-10 20:52:24,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:52:24,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184323855] [2022-01-10 20:52:24,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184323855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:24,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:24,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:52:24,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383144417] [2022-01-10 20:52:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:24,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:52:24,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:52:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:52:24,813 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:52:24,910 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2022-01-10 20:52:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:52:24,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 20:52:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:52:24,913 INFO L225 Difference]: With dead ends: 71 [2022-01-10 20:52:24,913 INFO L226 Difference]: Without dead ends: 65 [2022-01-10 20:52:24,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:52:24,915 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:52:24,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 77 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:52:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-10 20:52:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2022-01-10 20:52:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-01-10 20:52:24,934 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 14 [2022-01-10 20:52:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:52:24,934 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-01-10 20:52:24,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-01-10 20:52:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:52:24,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:24,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:52:24,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:52:25,139 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 20:52:25,140 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1768890245, now seen corresponding path program 1 times [2022-01-10 20:52:25,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:25,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913423583] [2022-01-10 20:52:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:25,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:25,170 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:52:25,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485445542] [2022-01-10 20:52:25,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:25,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:25,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:25,172 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 20:52:25,173 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 20:52:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:25,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 20:52:25,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:52:25,305 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 20:52:25,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:52:25,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913423583] [2022-01-10 20:52:25,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:52:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485445542] [2022-01-10 20:52:25,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485445542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:25,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:25,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:52:25,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352931482] [2022-01-10 20:52:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:25,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:52:25,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:52:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:52:25,307 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:52:25,323 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-01-10 20:52:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:52:25,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 20:52:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:52:25,325 INFO L225 Difference]: With dead ends: 64 [2022-01-10 20:52:25,325 INFO L226 Difference]: Without dead ends: 56 [2022-01-10 20:52:25,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 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 20:52:25,326 INFO L933 BasicCegarLoop]: 42 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, 112 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 20:52:25,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:52:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-10 20:52:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-01-10 20:52:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 55 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 20:52:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2022-01-10 20:52:25,331 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 15 [2022-01-10 20:52:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:52:25,331 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2022-01-10 20:52:25,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:52:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2022-01-10 20:52:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 20:52:25,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:25,332 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 20:52:25,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 20:52:25,548 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 20:52:25,548 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash -987547580, now seen corresponding path program 1 times [2022-01-10 20:52:25,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551489684] [2022-01-10 20:52:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:25,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:25,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:52:25,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570293706] [2022-01-10 20:52:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:25,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:25,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:25,565 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 20:52:25,566 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 20:52:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:25,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 20:52:25,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:52:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:52:32,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:52:32,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551489684] [2022-01-10 20:52:32,792 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:52:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570293706] [2022-01-10 20:52:32,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570293706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:32,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:32,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 20:52:32,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504586496] [2022-01-10 20:52:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:32,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 20:52:32,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 20:52:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-10 20:52:32,793 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 20:52:39,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:52:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:52:43,171 INFO L93 Difference]: Finished difference Result 87 states and 102 transitions. [2022-01-10 20:52:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 20:52:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 20:52:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:52:43,173 INFO L225 Difference]: With dead ends: 87 [2022-01-10 20:52:43,173 INFO L226 Difference]: Without dead ends: 79 [2022-01-10 20:52:43,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2022-01-10 20:52:43,174 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 168 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:52:43,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 94 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-10 20:52:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-10 20:52:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2022-01-10 20:52:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 70 states have internal predecessors, (87), 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 20:52:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2022-01-10 20:52:43,184 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 18 [2022-01-10 20:52:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:52:43,184 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2022-01-10 20:52:43,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 20:52:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2022-01-10 20:52:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 20:52:43,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:43,185 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:52:43,223 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 20:52:43,403 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 20:52:43,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1604529721, now seen corresponding path program 1 times [2022-01-10 20:52:43,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:43,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937411742] [2022-01-10 20:52:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:43,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:43,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:52:43,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437837814] [2022-01-10 20:52:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:43,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:43,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:43,455 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 20:52:43,497 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 20:52:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:43,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:52:43,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:52:43,754 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 20:52:43,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:52:43,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937411742] [2022-01-10 20:52:43,754 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:52:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437837814] [2022-01-10 20:52:43,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437837814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:52:43,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:52:43,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:52:43,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367723734] [2022-01-10 20:52:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:52:43,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:52:43,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:52:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:52:43,756 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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 20:52:43,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:52:43,800 INFO L93 Difference]: Finished difference Result 135 states and 168 transitions. [2022-01-10 20:52:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:52:43,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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 24 [2022-01-10 20:52:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:52:43,801 INFO L225 Difference]: With dead ends: 135 [2022-01-10 20:52:43,801 INFO L226 Difference]: Without dead ends: 76 [2022-01-10 20:52:43,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 20:52:43,803 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 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 20:52:43,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:52:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-10 20:52:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-01-10 20:52:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.295774647887324) internal successors, (92), 75 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 20:52:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2022-01-10 20:52:43,810 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 24 [2022-01-10 20:52:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:52:43,811 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2022-01-10 20:52:43,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 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 20:52:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2022-01-10 20:52:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 20:52:43,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:52:43,811 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, 1] [2022-01-10 20:52:43,840 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 20:52:44,012 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 20:52:44,012 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:52:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:52:44,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1238373991, now seen corresponding path program 1 times [2022-01-10 20:52:44,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:52:44,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580506887] [2022-01-10 20:52:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:44,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:52:44,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:52:44,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223354119] [2022-01-10 20:52:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:52:44,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:52:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:52:44,037 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 20:52:44,038 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 20:52:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:52:46,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-10 20:52:46,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:52:48,112 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 20:52:48,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:52:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:52:52,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:52:52,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580506887] [2022-01-10 20:52:52,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:52:52,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223354119] [2022-01-10 20:52:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223354119] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:52:52,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:52:52,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2022-01-10 20:52:52,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636766562] [2022-01-10 20:52:52,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:52:52,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 20:52:52,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:52:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 20:52:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-01-10 20:52:52,861 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 20:52:57,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:03,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:06,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:09,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:11,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:13,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:13,897 INFO L93 Difference]: Finished difference Result 168 states and 205 transitions. [2022-01-10 20:53:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 20:53:13,897 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 24 [2022-01-10 20:53:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:13,898 INFO L225 Difference]: With dead ends: 168 [2022-01-10 20:53:13,898 INFO L226 Difference]: Without dead ends: 162 [2022-01-10 20:53:13,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-01-10 20:53:13,899 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 184 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 59 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:13,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 321 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 335 Invalid, 5 Unknown, 63 Unchecked, 16.7s Time] [2022-01-10 20:53:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-10 20:53:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 107. [2022-01-10 20:53:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.3235294117647058) internal successors, (135), 106 states have internal predecessors, (135), 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 20:53:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 135 transitions. [2022-01-10 20:53:13,911 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 135 transitions. Word has length 24 [2022-01-10 20:53:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:13,911 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 135 transitions. [2022-01-10 20:53:13,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 20:53:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 135 transitions. [2022-01-10 20:53:13,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 20:53:13,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:13,911 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:53:13,919 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 20:53:14,117 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 20:53:14,117 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash -422002016, now seen corresponding path program 1 times [2022-01-10 20:53:14,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:14,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211507725] [2022-01-10 20:53:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:14,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:14,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:14,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609855930] [2022-01-10 20:53:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:14,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:14,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:14,160 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 20:53:14,190 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 20:53:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:14,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 20:53:14,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:15,201 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 20:53:15,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:53:15,500 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 20:53:15,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:53:15,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211507725] [2022-01-10 20:53:15,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:53:15,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609855930] [2022-01-10 20:53:15,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609855930] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:53:15,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:53:15,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-10 20:53:15,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875322305] [2022-01-10 20:53:15,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:53:15,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 20:53:15,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:53:15,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 20:53:15,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:53:15,501 INFO L87 Difference]: Start difference. First operand 107 states and 135 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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 20:53:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:16,089 INFO L93 Difference]: Finished difference Result 148 states and 186 transitions. [2022-01-10 20:53:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 20:53:16,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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 27 [2022-01-10 20:53:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:16,090 INFO L225 Difference]: With dead ends: 148 [2022-01-10 20:53:16,090 INFO L226 Difference]: Without dead ends: 140 [2022-01-10 20:53:16,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-01-10 20:53:16,091 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 68 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:16,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 283 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 38 Invalid, 0 Unknown, 5 Unchecked, 0.5s Time] [2022-01-10 20:53:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-10 20:53:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2022-01-10 20:53:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.3203125) internal successors, (169), 132 states have internal predecessors, (169), 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 20:53:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2022-01-10 20:53:16,104 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 27 [2022-01-10 20:53:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:16,104 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2022-01-10 20:53:16,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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 20:53:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2022-01-10 20:53:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 20:53:16,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:16,105 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:53:16,121 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 20:53:16,305 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 20:53:16,307 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:16,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1078291260, now seen corresponding path program 1 times [2022-01-10 20:53:16,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:16,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052434035] [2022-01-10 20:53:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:16,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:16,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:16,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465243748] [2022-01-10 20:53:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:16,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:16,332 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 20:53:16,333 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 20:53:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:16,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 20:53:16,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:53:16,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:53:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:53:17,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:53:17,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052434035] [2022-01-10 20:53:17,084 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:53:17,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465243748] [2022-01-10 20:53:17,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465243748] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:53:17,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:53:17,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-10 20:53:17,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571266514] [2022-01-10 20:53:17,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:53:17,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 20:53:17,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:53:17,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 20:53:17,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:53:17,085 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 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 20:53:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:17,189 INFO L93 Difference]: Finished difference Result 234 states and 301 transitions. [2022-01-10 20:53:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:53:17,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 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) Word has length 32 [2022-01-10 20:53:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:17,190 INFO L225 Difference]: With dead ends: 234 [2022-01-10 20:53:17,190 INFO L226 Difference]: Without dead ends: 143 [2022-01-10 20:53:17,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:53:17,191 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 67 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:17,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 301 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-01-10 20:53:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-10 20:53:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2022-01-10 20:53:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.2992700729927007) internal successors, (178), 141 states have internal predecessors, (178), 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 20:53:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2022-01-10 20:53:17,203 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 32 [2022-01-10 20:53:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:17,203 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2022-01-10 20:53:17,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 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 20:53:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2022-01-10 20:53:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 20:53:17,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:17,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:53:17,218 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 20:53:17,408 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 20:53:17,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash -999787296, now seen corresponding path program 1 times [2022-01-10 20:53:17,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:17,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393744424] [2022-01-10 20:53:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:17,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:17,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:17,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600843278] [2022-01-10 20:53:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:17,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:17,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:17,440 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 20:53:17,441 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 20:53:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:17,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:53:17,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:53:17,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:53:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:53:18,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:53:18,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393744424] [2022-01-10 20:53:18,027 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:53:18,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600843278] [2022-01-10 20:53:18,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600843278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:53:18,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:53:18,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-10 20:53:18,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086948712] [2022-01-10 20:53:18,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:53:18,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:53:18,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:53:18,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:53:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:53:18,028 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:53:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:18,112 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2022-01-10 20:53:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:53:18,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-10 20:53:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:18,113 INFO L225 Difference]: With dead ends: 206 [2022-01-10 20:53:18,113 INFO L226 Difference]: Without dead ends: 140 [2022-01-10 20:53:18,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:53:18,116 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:18,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 254 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-01-10 20:53:18,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-10 20:53:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-01-10 20:53:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.288888888888889) internal successors, (174), 139 states have internal predecessors, (174), 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 20:53:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2022-01-10 20:53:18,133 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 34 [2022-01-10 20:53:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:18,134 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2022-01-10 20:53:18,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:53:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2022-01-10 20:53:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 20:53:18,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:18,137 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:53:18,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 20:53:18,341 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 20:53:18,341 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash -858869561, now seen corresponding path program 1 times [2022-01-10 20:53:18,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:18,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770539032] [2022-01-10 20:53:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:18,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:18,365 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:18,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942526048] [2022-01-10 20:53:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:18,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:18,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:18,370 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 20:53:18,371 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 20:53:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:18,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 20:53:18,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:53:19,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:53:19,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:53:19,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770539032] [2022-01-10 20:53:19,357 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:53:19,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942526048] [2022-01-10 20:53:19,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942526048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:53:19,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:53:19,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:53:19,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75177205] [2022-01-10 20:53:19,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:53:19,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:53:19,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:53:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:53:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:53:19,358 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 20:53:21,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:23,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:25,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:27,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:53:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:28,024 INFO L93 Difference]: Finished difference Result 175 states and 215 transitions. [2022-01-10 20:53:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:53:28,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 34 [2022-01-10 20:53:28,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:28,025 INFO L225 Difference]: With dead ends: 175 [2022-01-10 20:53:28,025 INFO L226 Difference]: Without dead ends: 169 [2022-01-10 20:53:28,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:53:28,043 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 62 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:28,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 76 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 48 Invalid, 4 Unknown, 0 Unchecked, 8.5s Time] [2022-01-10 20:53:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-10 20:53:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 131. [2022-01-10 20:53:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.2755905511811023) internal successors, (162), 130 states have internal predecessors, (162), 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 20:53:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2022-01-10 20:53:28,054 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 34 [2022-01-10 20:53:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:28,054 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2022-01-10 20:53:28,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 20:53:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2022-01-10 20:53:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 20:53:28,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:28,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:53:28,074 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 20:53:28,267 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 20:53:28,267 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:28,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:28,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2072213660, now seen corresponding path program 1 times [2022-01-10 20:53:28,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:28,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313450376] [2022-01-10 20:53:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:28,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:28,276 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:28,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713460679] [2022-01-10 20:53:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:28,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:28,277 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 20:53:28,283 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 20:53:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:28,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 20:53:28,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:53:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:53:28,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:53:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:53:29,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:53:29,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313450376] [2022-01-10 20:53:29,323 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:53:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713460679] [2022-01-10 20:53:29,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713460679] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:53:29,323 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:53:29,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-10 20:53:29,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961699038] [2022-01-10 20:53:29,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:53:29,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 20:53:29,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:53:29,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 20:53:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:53:29,324 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:53:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:53:29,616 INFO L93 Difference]: Finished difference Result 186 states and 232 transitions. [2022-01-10 20:53:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 20:53:29,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 20:53:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:53:29,617 INFO L225 Difference]: With dead ends: 186 [2022-01-10 20:53:29,617 INFO L226 Difference]: Without dead ends: 136 [2022-01-10 20:53:29,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-10 20:53:29,618 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:53:29,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 282 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-01-10 20:53:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-10 20:53:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2022-01-10 20:53:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 132 states have internal predecessors, (163), 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 20:53:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2022-01-10 20:53:29,627 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 35 [2022-01-10 20:53:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:53:29,627 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2022-01-10 20:53:29,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:53:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2022-01-10 20:53:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 20:53:29,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:53:29,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:53:29,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-01-10 20:53:29,829 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 20:53:29,829 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 20:53:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:53:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1568698246, now seen corresponding path program 1 times [2022-01-10 20:53:29,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:53:29,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911222838] [2022-01-10 20:53:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:29,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:53:29,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:53:29,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086969851] [2022-01-10 20:53:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:53:29,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:53:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:53:29,847 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 20:53:29,847 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 20:53:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:53:29,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:53:29,977 INFO L286 TraceCheckSpWp]: Computing forward predicates...