/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_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:50:51,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:50:51,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:50:51,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:50:51,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:50:51,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:50:51,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:50:51,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:50:51,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:50:51,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:50:51,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:50:51,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:50:51,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:50:51,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:50:51,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:50:51,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:50:51,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:50:51,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:50:51,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:50:51,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:50:51,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:50:51,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:50:51,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:50:51,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:50:51,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:50:51,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:50:51,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:50:51,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:50:51,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:50:51,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:50:51,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:50:51,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:50:51,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:50:51,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:50:51,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:50:51,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:50:51,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:50:51,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:50:51,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:50:51,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:50:51,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:50:51,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 08:50:51,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:50:51,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:50:51,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:50:51,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:50:51,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:50:51,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:50:51,251 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:50:51,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:50:51,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:50:51,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:50:51,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:50:51,253 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:50:51,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:50:51,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:50:51,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:50:51,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:50:51,253 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:50:51,253 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:50:51,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:50:51,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:50:51,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:50:51,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:50:51,418 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:50:51,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2022-01-10 08:50:51,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcf36d07/510c080677ba41d1924bd892caa41530/FLAG6838258dd [2022-01-10 08:50:51,803 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:50:51,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2022-01-10 08:50:51,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcf36d07/510c080677ba41d1924bd892caa41530/FLAG6838258dd [2022-01-10 08:50:52,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcf36d07/510c080677ba41d1924bd892caa41530 [2022-01-10 08:50:52,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:50:52,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:50:52,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:50:52,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:50:52,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:50:52,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fea9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52, skipping insertion in model container [2022-01-10 08:50:52,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:50:52,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:50:52,371 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/cohencu-ll_unwindbound20.c[588,601] [2022-01-10 08:50:52,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:50:52,415 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:50:52,428 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/cohencu-ll_unwindbound20.c[588,601] [2022-01-10 08:50:52,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:50:52,453 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:50:52,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52 WrapperNode [2022-01-10 08:50:52,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:50:52,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:50:52,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:50:52,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:50:52,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,490 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 104 [2022-01-10 08:50:52,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:50:52,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:50:52,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:50:52,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:50:52,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:50:52,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:50:52,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:50:52,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:50:52,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (1/1) ... [2022-01-10 08:50:52,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:50:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:50:52,547 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 08:50:52,548 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 08:50:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:50:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:50:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:50:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:50:52,610 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:50:52,611 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:50:53,531 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:50:53,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:50:53,536 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 08:50:53,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:50:53 BoogieIcfgContainer [2022-01-10 08:50:53,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:50:53,537 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:50:53,537 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:50:53,538 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:50:53,540 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:50:53" (1/1) ... [2022-01-10 08:50:53,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:50:53 BasicIcfg [2022-01-10 08:50:53,607 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:50:53,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:50:53,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:50:53,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:50:53,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:50:52" (1/4) ... [2022-01-10 08:50:53,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab4c6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:50:53, skipping insertion in model container [2022-01-10 08:50:53,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:50:52" (2/4) ... [2022-01-10 08:50:53,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab4c6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:50:53, skipping insertion in model container [2022-01-10 08:50:53,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:50:53" (3/4) ... [2022-01-10 08:50:53,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab4c6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:50:53, skipping insertion in model container [2022-01-10 08:50:53,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:50:53" (4/4) ... [2022-01-10 08:50:53,617 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound20.cTransformedIcfg [2022-01-10 08:50:53,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:50:53,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-01-10 08:50:53,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:50:53,653 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 08:50:53,653 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-01-10 08:50:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 52 states have internal predecessors, (66), 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 08:50:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 08:50:53,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:50:53,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 08:50:53,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:50:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:50:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash 912708136, now seen corresponding path program 1 times [2022-01-10 08:50:53,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:50:53,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711198629] [2022-01-10 08:50:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:50:53,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:50:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:50:53,777 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 08:50:53,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:50:53,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711198629] [2022-01-10 08:50:53,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711198629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:50:53,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:50:53,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:50:53,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802980449] [2022-01-10 08:50:53,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:50:53,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:50:53,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:50:53,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:50:53,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:50:53,801 INFO L87 Difference]: Start difference. First operand has 53 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 52 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 08:50:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:50:53,813 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2022-01-10 08:50:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:50:53,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-01-10 08:50:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:50:53,819 INFO L225 Difference]: With dead ends: 104 [2022-01-10 08:50:53,819 INFO L226 Difference]: Without dead ends: 49 [2022-01-10 08:50:53,821 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 08:50:53,823 INFO L933 BasicCegarLoop]: 54 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, 54 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 08:50:53,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:50:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-10 08:50:53,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-10 08:50:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 48 states have internal predecessors, (50), 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 08:50:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-01-10 08:50:53,851 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 6 [2022-01-10 08:50:53,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:50:53,851 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-01-10 08:50:53,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 08:50:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-01-10 08:50:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 08:50:53,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:50:53,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 08:50:53,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:50:53,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:50:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:50:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash 912739914, now seen corresponding path program 1 times [2022-01-10 08:50:53,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:50:53,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196400790] [2022-01-10 08:50:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:50:53,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:50:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:50:54,044 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 08:50:54,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:50:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196400790] [2022-01-10 08:50:54,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196400790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:50:54,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:50:54,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:50:54,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884738077] [2022-01-10 08:50:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:50:54,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:50:54,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:50:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:50:54,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:50:54,048 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 08:50:56,268 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 08:50:58,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:50:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:50:58,675 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2022-01-10 08:50:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:50:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-01-10 08:50:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:50:58,677 INFO L225 Difference]: With dead ends: 82 [2022-01-10 08:50:58,677 INFO L226 Difference]: Without dead ends: 78 [2022-01-10 08:50:58,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:50:58,678 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 31 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:50:58,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 92 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-01-10 08:50:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-10 08:50:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2022-01-10 08:50:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 63 states have internal predecessors, (71), 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 08:50:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2022-01-10 08:50:58,689 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 6 [2022-01-10 08:50:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:50:58,689 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2022-01-10 08:50:58,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 08:50:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-01-10 08:50:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 08:50:58,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:50:58,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:50:58,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 08:50:58,690 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:50:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:50:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 969765968, now seen corresponding path program 1 times [2022-01-10 08:50:58,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:50:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182681540] [2022-01-10 08:50:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:50:58,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:50:58,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:50:58,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644697434] [2022-01-10 08:50:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:50:58,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:50:58,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:50:58,739 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 08:50:58,787 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 08:50:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:50:58,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:50:58,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:50:58,902 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 08:50:58,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:50:58,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:50:58,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182681540] [2022-01-10 08:50:58,903 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:50:58,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644697434] [2022-01-10 08:50:58,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644697434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:50:58,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:50:58,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:50:58,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485265877] [2022-01-10 08:50:58,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:50:58,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:50:58,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:50:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:50:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:50:58,905 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 08:51:01,155 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 08:51:03,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:51:05,209 WARN L534 Checker$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 08:51:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:51:05,228 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2022-01-10 08:51:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:51:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-01-10 08:51:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:51:05,230 INFO L225 Difference]: With dead ends: 93 [2022-01-10 08:51:05,230 INFO L226 Difference]: Without dead ends: 91 [2022-01-10 08:51:05,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 08:51:05,231 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 38 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:51:05,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 92 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 47 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 08:51:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-10 08:51:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2022-01-10 08:51:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 53 states have (on average 1.320754716981132) internal successors, (70), 63 states have internal predecessors, (70), 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 08:51:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-01-10 08:51:05,240 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 8 [2022-01-10 08:51:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:51:05,241 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-01-10 08:51:05,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 08:51:05,241 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-01-10 08:51:05,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 08:51:05,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:51:05,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:51:05,265 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 08:51:05,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:05,456 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:51:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:51:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -36440485, now seen corresponding path program 1 times [2022-01-10 08:51:05,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:51:05,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836905269] [2022-01-10 08:51:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:05,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:51:05,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:51:05,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961090995] [2022-01-10 08:51:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:05,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:05,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:51:05,485 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 08:51:05,489 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 08:51:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:51:05,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:51:05,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:51:05,608 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 08:51:05,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:51:05,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:51:05,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836905269] [2022-01-10 08:51:05,608 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:51:05,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961090995] [2022-01-10 08:51:05,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961090995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:51:05,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:51:05,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:51:05,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678135633] [2022-01-10 08:51:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:51:05,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:51:05,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:51:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:51:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:51:05,611 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:51:05,639 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-01-10 08:51:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:51:05,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 08:51:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:51:05,642 INFO L225 Difference]: With dead ends: 86 [2022-01-10 08:51:05,642 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 08:51:05,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 08:51:05,644 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:51:05,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:51:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 08:51:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-01-10 08:51:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 63 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2022-01-10 08:51:05,662 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 9 [2022-01-10 08:51:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:51:05,663 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2022-01-10 08:51:05,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2022-01-10 08:51:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 08:51:05,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:51:05,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:51:05,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:51:05,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 08:51:05,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:51:05,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:51:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash -62770666, now seen corresponding path program 1 times [2022-01-10 08:51:05,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:51:05,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041641065] [2022-01-10 08:51:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:05,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:51:05,891 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:51:05,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961105149] [2022-01-10 08:51:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:05,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:05,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:51:05,892 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 08:51:05,893 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 08:51:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:51:05,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:51:05,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:51:06,038 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 08:51:06,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:51:06,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:51:06,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041641065] [2022-01-10 08:51:06,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:51:06,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961105149] [2022-01-10 08:51:06,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961105149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:51:06,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:51:06,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:51:06,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412415632] [2022-01-10 08:51:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:51:06,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:51:06,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:51:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:51:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:51:06,040 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:51:06,428 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2022-01-10 08:51:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:51:06,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 08:51:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:51:06,430 INFO L225 Difference]: With dead ends: 90 [2022-01-10 08:51:06,430 INFO L226 Difference]: Without dead ends: 86 [2022-01-10 08:51:06,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 08:51:06,430 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:51:06,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 93 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:51:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-10 08:51:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2022-01-10 08:51:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 65 states have internal predecessors, (70), 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 08:51:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-01-10 08:51:06,438 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2022-01-10 08:51:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:51:06,438 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-01-10 08:51:06,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-01-10 08:51:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 08:51:06,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:51:06,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:51:06,460 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 08:51:06,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:06,658 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:51:06,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:51:06,659 INFO L85 PathProgramCache]: Analyzing trace with hash -193030244, now seen corresponding path program 1 times [2022-01-10 08:51:06,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:51:06,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383308313] [2022-01-10 08:51:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:06,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:51:06,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:51:06,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174738421] [2022-01-10 08:51:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:06,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:06,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:51:06,668 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 08:51:06,669 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 08:51:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:51:06,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 08:51:06,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:51:06,876 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 08:51:06,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:51:06,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:51:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383308313] [2022-01-10 08:51:06,876 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:51:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174738421] [2022-01-10 08:51:06,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174738421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:51:06,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:51:06,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:51:06,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672844113] [2022-01-10 08:51:06,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:51:06,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:51:06,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:51:06,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:51:06,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:51:06,877 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:08,961 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 08:51:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:51:09,210 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2022-01-10 08:51:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:51:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 08:51:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:51:09,211 INFO L225 Difference]: With dead ends: 86 [2022-01-10 08:51:09,211 INFO L226 Difference]: Without dead ends: 62 [2022-01-10 08:51:09,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 08:51:09,212 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:51:09,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 85 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 08:51:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-10 08:51:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-01-10 08:51:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 61 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2022-01-10 08:51:09,218 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 12 [2022-01-10 08:51:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:51:09,218 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2022-01-10 08:51:09,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2022-01-10 08:51:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 08:51:09,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:51:09,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:51:09,243 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 08:51:09,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:09,438 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:51:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:51:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 151840755, now seen corresponding path program 1 times [2022-01-10 08:51:09,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:51:09,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579895097] [2022-01-10 08:51:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:09,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:51:09,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:51:09,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403574464] [2022-01-10 08:51:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:09,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:09,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:51:09,449 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 08:51:09,450 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 08:51:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:51:09,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 08:51:09,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:51:09,675 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 08:51:09,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:51:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:51:09,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:51:09,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579895097] [2022-01-10 08:51:09,774 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:51:09,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403574464] [2022-01-10 08:51:09,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403574464] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:51:09,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:51:09,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 08:51:09,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932135602] [2022-01-10 08:51:09,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:51:09,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:51:09,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:51:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:51:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:51:09,776 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:51:10,466 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2022-01-10 08:51:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 08:51:10,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 08:51:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:51:10,468 INFO L225 Difference]: With dead ends: 105 [2022-01-10 08:51:10,468 INFO L226 Difference]: Without dead ends: 101 [2022-01-10 08:51:10,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:51:10,468 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 108 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:51:10,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 111 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:51:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-10 08:51:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 58. [2022-01-10 08:51:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 57 states have internal predecessors, (59), 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 08:51:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-01-10 08:51:10,474 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 19 [2022-01-10 08:51:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:51:10,474 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-01-10 08:51:10,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-01-10 08:51:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 08:51:10,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:51:10,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:51:10,483 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 08:51:10,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:10,681 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:51:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:51:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash -109885511, now seen corresponding path program 1 times [2022-01-10 08:51:10,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:51:10,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889792512] [2022-01-10 08:51:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:10,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:51:10,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:51:10,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736781661] [2022-01-10 08:51:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:10,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:10,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:51:10,694 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 08:51:10,730 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 08:51:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:51:10,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 08:51:10,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:51:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:51:11,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:51:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:51:19,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:51:19,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889792512] [2022-01-10 08:51:19,877 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:51:19,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736781661] [2022-01-10 08:51:19,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736781661] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:51:19,877 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:51:19,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 08:51:19,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767665692] [2022-01-10 08:51:19,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:51:19,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:51:19,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:51:19,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:51:19,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2022-01-10 08:51:19,878 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:29,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:51:31,427 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| (mod (let ((.cse0 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 3) 18446744073709551616))) (+ (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| .cse0) 18446744073709551616) .cse0 1)) 18446744073709551616)) (= (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~y~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~z~0#1Int|) 18446744073709551616) (mod (let ((.cse2 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 1) 18446744073709551616))) (let ((.cse1 (mod (* .cse2 3) 18446744073709551616))) (+ .cse1 (mod (* .cse1 .cse2) 18446744073709551616) 1))) 18446744073709551616))) is different from false [2022-01-10 08:51:36,423 WARN L534 Checker$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 08:51:38,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:51:40,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:51:42,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:51:44,416 WARN L534 Checker$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 08:51:46,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:51:49,561 WARN L534 Checker$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 08:51:51,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:51:53,571 WARN L534 Checker$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 08:51:55,583 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 08:51:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:51:55,862 INFO L93 Difference]: Finished difference Result 185 states and 193 transitions. [2022-01-10 08:51:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 08:51:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 08:51:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:51:55,863 INFO L225 Difference]: With dead ends: 185 [2022-01-10 08:51:55,863 INFO L226 Difference]: Without dead ends: 179 [2022-01-10 08:51:55,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=4, NotChecked=22, Total=182 [2022-01-10 08:51:55,864 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 132 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 83 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:51:55,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 230 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 134 Invalid, 10 Unknown, 4 Unchecked, 25.5s Time] [2022-01-10 08:51:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-10 08:51:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 99. [2022-01-10 08:51:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 98 states have internal predecessors, (113), 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 08:51:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2022-01-10 08:51:55,873 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 21 [2022-01-10 08:51:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:51:55,874 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2022-01-10 08:51:55,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2022-01-10 08:51:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 08:51:55,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:51:55,874 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] [2022-01-10 08:51:55,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-10 08:51:56,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:56,084 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:51:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:51:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash 854102034, now seen corresponding path program 1 times [2022-01-10 08:51:56,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:51:56,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122447127] [2022-01-10 08:51:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:56,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:51:56,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:51:56,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969197540] [2022-01-10 08:51:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:56,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:56,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:51:56,094 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 08:51:56,095 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 08:51:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:51:56,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 08:51:56,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:51:56,487 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 08:51:56,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:51:56,607 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 08:51:56,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:51:56,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122447127] [2022-01-10 08:51:56,607 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:51:56,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969197540] [2022-01-10 08:51:56,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969197540] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:51:56,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:51:56,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 08:51:56,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557930786] [2022-01-10 08:51:56,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:51:56,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 08:51:56,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:51:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 08:51:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:51:56,608 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:51:56,781 INFO L93 Difference]: Finished difference Result 173 states and 179 transitions. [2022-01-10 08:51:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 08:51:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 08:51:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:51:56,782 INFO L225 Difference]: With dead ends: 173 [2022-01-10 08:51:56,782 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 08:51:56,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 08:51:56,783 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 99 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:51:56,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 248 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:51:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 08:51:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2022-01-10 08:51:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 98 states have internal predecessors, (110), 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 08:51:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2022-01-10 08:51:56,795 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 22 [2022-01-10 08:51:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:51:56,795 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2022-01-10 08:51:56,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:51:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2022-01-10 08:51:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 08:51:56,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:51:56,796 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:51:56,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:51:57,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:57,012 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:51:57,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:51:57,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1774243647, now seen corresponding path program 1 times [2022-01-10 08:51:57,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:51:57,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517336890] [2022-01-10 08:51:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:57,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:51:57,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:51:57,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347654287] [2022-01-10 08:51:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:51:57,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:51:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:51:57,027 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 08:51:57,028 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 08:51:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:51:57,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 08:51:57,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:51:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:51:57,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:51:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:51:59,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:51:59,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517336890] [2022-01-10 08:51:59,795 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:51:59,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347654287] [2022-01-10 08:51:59,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347654287] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:51:59,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:51:59,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 08:51:59,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134446911] [2022-01-10 08:51:59,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:51:59,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:51:59,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:51:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:51:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:51:59,796 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:52:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:52:00,414 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2022-01-10 08:52:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:52:00,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 08:52:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:52:00,415 INFO L225 Difference]: With dead ends: 113 [2022-01-10 08:52:00,415 INFO L226 Difference]: Without dead ends: 111 [2022-01-10 08:52:00,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-10 08:52:00,415 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 62 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:52:00,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 144 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:52:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-10 08:52:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2022-01-10 08:52:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.211111111111111) internal successors, (109), 98 states have internal predecessors, (109), 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 08:52:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2022-01-10 08:52:00,426 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 23 [2022-01-10 08:52:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:52:00,426 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2022-01-10 08:52:00,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:52:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2022-01-10 08:52:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 08:52:00,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:52:00,427 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:52:00,436 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 08:52:00,634 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,SelfDestructingSolverStorable9 [2022-01-10 08:52:00,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-01-10 08:52:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:52:00,635 INFO L85 PathProgramCache]: Analyzing trace with hash -53834107, now seen corresponding path program 1 times [2022-01-10 08:52:00,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:52:00,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065957194] [2022-01-10 08:52:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:52:00,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:52:00,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:52:00,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697438376] [2022-01-10 08:52:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:52:00,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:52:00,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:52:00,644 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 08:52:00,645 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 08:52:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:52:00,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 08:52:00,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:52:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:52:01,230 INFO L328 TraceCheckSpWp]: Computing backward predicates...