/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:25:06,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:25:06,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:25:06,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 21:25:06,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 21:25:06,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 21:25:06,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 21:25:06,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 21:25:06,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 21:25:06,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 21:25:06,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 21:25:06,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 21:25:06,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:25:06,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:25:06,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:25:06,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:25:06,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:25:06,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:25:06,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:25:06,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:25:06,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:25:06,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:25:06,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:25:06,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:25:06,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 21:25:06,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 21:25:06,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 21:25:06,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 21:25:06,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 21:25:06,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 21:25:06,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:25:06,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:25:06,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:25:06,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:25:06,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:25:06,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:25:06,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:25:06,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:25:06,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:25:06,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:25:06,446 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:25:06,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:25:06,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:25:06,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:25:06,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:25:06,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:25:06,448 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:25:06,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:25:06,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:25:06,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:25:06,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:25:06,449 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:25:06,449 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:25:06,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:25:06,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:25:06,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:25:06,619 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:25:06,620 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:25:06,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c [2022-01-10 21:25:06,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6448a41e2/0082c3f728104805ba28ebbfebcec50d/FLAG9c4d8cfad [2022-01-10 21:25:07,024 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:25:07,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c [2022-01-10 21:25:07,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6448a41e2/0082c3f728104805ba28ebbfebcec50d/FLAG9c4d8cfad [2022-01-10 21:25:07,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6448a41e2/0082c3f728104805ba28ebbfebcec50d [2022-01-10 21:25:07,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:25:07,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:25:07,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:25:07,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:25:07,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:25:07,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce8a8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07, skipping insertion in model container [2022-01-10 21:25:07,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:25:07,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:25:07,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c[416,429] [2022-01-10 21:25:07,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:25:07,173 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:25:07,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-2-n-u.c[416,429] [2022-01-10 21:25:07,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:25:07,232 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:25:07,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07 WrapperNode [2022-01-10 21:25:07,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:25:07,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:25:07,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:25:07,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:25:07,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,275 INFO L137 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2022-01-10 21:25:07,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:25:07,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:25:07,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:25:07,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:25:07,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:25:07,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:25:07,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:25:07,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:25:07,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:25:07,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:07,323 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 21:25:07,324 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 21:25:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:25:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:25:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 21:25:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:25:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:25:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:25:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 21:25:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:25:07,402 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:25:07,402 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:25:07,694 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:25:07,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:25:07,699 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-10 21:25:07,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:25:07 BoogieIcfgContainer [2022-01-10 21:25:07,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:25:07,700 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:25:07,700 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:25:07,701 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:25:07,703 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:25:07" (1/1) ... [2022-01-10 21:25:07,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:25:07 BasicIcfg [2022-01-10 21:25:07,774 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:25:07,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:25:07,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:25:07,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:25:07,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:25:07" (1/4) ... [2022-01-10 21:25:07,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b696bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:25:07, skipping insertion in model container [2022-01-10 21:25:07,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:25:07" (2/4) ... [2022-01-10 21:25:07,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b696bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:25:07, skipping insertion in model container [2022-01-10 21:25:07,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:25:07" (3/4) ... [2022-01-10 21:25:07,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b696bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:25:07, skipping insertion in model container [2022-01-10 21:25:07,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:25:07" (4/4) ... [2022-01-10 21:25:07,780 INFO L111 eAbstractionObserver]: Analyzing ICFG copy-partial-2-n-u.cTransformedIcfg [2022-01-10 21:25:07,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:25:07,783 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:25:07,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:25:07,814 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 21:25:07,815 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:25:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 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 21:25:07,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 21:25:07,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:07,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:07,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash 816969364, now seen corresponding path program 1 times [2022-01-10 21:25:07,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:07,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447832114] [2022-01-10 21:25:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:07,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:07,904 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:07,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425443378] [2022-01-10 21:25:07,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:07,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:07,909 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 21:25:07,910 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 21:25:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:25:08,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 21:25:08,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:08,043 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 21:25:08,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:25:08,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447832114] [2022-01-10 21:25:08,044 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425443378] [2022-01-10 21:25:08,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425443378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:25:08,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:25:08,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:25:08,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691045918] [2022-01-10 21:25:08,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:25:08,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:25:08,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:25:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:25:08,068 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 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) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:08,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:08,078 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2022-01-10 21:25:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:25:08,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 21:25:08,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:08,083 INFO L225 Difference]: With dead ends: 47 [2022-01-10 21:25:08,083 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 21:25:08,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 21:25:08,087 INFO L933 BasicCegarLoop]: 30 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, 30 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 21:25:08,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:25:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 21:25:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 21:25:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 21:25:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-01-10 21:25:08,109 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2022-01-10 21:25:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:08,110 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-01-10 21:25:08,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-01-10 21:25:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 21:25:08,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:08,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:08,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 21:25:08,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-10 21:25:08,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1903071951, now seen corresponding path program 1 times [2022-01-10 21:25:08,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:08,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724525622] [2022-01-10 21:25:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:08,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:08,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:08,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616005220] [2022-01-10 21:25:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:08,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:08,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:08,369 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 21:25:08,370 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 21:25:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:25:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 21:25:08,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:08,629 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 21:25:08,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:25:08,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:08,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724525622] [2022-01-10 21:25:08,629 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:08,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616005220] [2022-01-10 21:25:08,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616005220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:25:08,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:25:08,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 21:25:08,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664557828] [2022-01-10 21:25:08,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:25:08,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 21:25:08,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:08,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 21:25:08,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:25:08,632 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:08,831 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-01-10 21:25:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:25:08,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 21:25:08,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:08,833 INFO L225 Difference]: With dead ends: 44 [2022-01-10 21:25:08,833 INFO L226 Difference]: Without dead ends: 35 [2022-01-10 21:25:08,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 21:25:08,834 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:08,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:25:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-10 21:25:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2022-01-10 21:25:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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 21:25:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-01-10 21:25:08,837 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 14 [2022-01-10 21:25:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:08,837 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-01-10 21:25:08,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-01-10 21:25:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 21:25:08,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:08,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:08,856 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 21:25:09,047 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,SelfDestructingSolverStorable1 [2022-01-10 21:25:09,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1303557864, now seen corresponding path program 1 times [2022-01-10 21:25:09,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:09,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045405012] [2022-01-10 21:25:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:09,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:09,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:09,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902951701] [2022-01-10 21:25:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:09,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:09,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:09,083 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 21:25:09,103 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 21:25:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:25:09,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 21:25:09,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:25:09,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:25:09,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:09,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045405012] [2022-01-10 21:25:09,303 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:09,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902951701] [2022-01-10 21:25:09,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902951701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:25:09,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:25:09,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 21:25:09,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075937657] [2022-01-10 21:25:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:25:09,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 21:25:09,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 21:25:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:25:09,305 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:09,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:09,389 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-01-10 21:25:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:25:09,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 21:25:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:09,391 INFO L225 Difference]: With dead ends: 51 [2022-01-10 21:25:09,391 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 21:25:09,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 21:25:09,392 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:09,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 49 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:25:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 21:25:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2022-01-10 21:25:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 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 21:25:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-01-10 21:25:09,395 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 17 [2022-01-10 21:25:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:09,395 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-01-10 21:25:09,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-01-10 21:25:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 21:25:09,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:09,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:09,418 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 21:25:09,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:09,600 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:09,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash 17538427, now seen corresponding path program 1 times [2022-01-10 21:25:09,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:09,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535061928] [2022-01-10 21:25:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:09,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:09,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:09,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828031697] [2022-01-10 21:25:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:09,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:09,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:09,622 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 21:25:09,623 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 21:25:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:25:09,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 21:25:09,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:25:09,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:25:09,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:09,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535061928] [2022-01-10 21:25:09,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:09,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828031697] [2022-01-10 21:25:09,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828031697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:25:09,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:25:09,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 21:25:09,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148375443] [2022-01-10 21:25:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:25:09,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 21:25:09,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 21:25:09,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:25:09,886 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:10,153 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2022-01-10 21:25:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:25:10,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 21:25:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:10,156 INFO L225 Difference]: With dead ends: 53 [2022-01-10 21:25:10,156 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 21:25:10,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-10 21:25:10,157 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 72 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:10,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 45 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:25:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 21:25:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2022-01-10 21:25:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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 21:25:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-01-10 21:25:10,161 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2022-01-10 21:25:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:10,162 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-01-10 21:25:10,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-01-10 21:25:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 21:25:10,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:10,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:10,181 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 21:25:10,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:10,363 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1288895983, now seen corresponding path program 1 times [2022-01-10 21:25:10,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:10,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602995184] [2022-01-10 21:25:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:10,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:10,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:10,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583470839] [2022-01-10 21:25:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:10,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:10,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:10,381 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 21:25:10,382 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 21:25:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:25:10,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 21:25:10,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:10,629 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 21:25:10,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:25:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:25:10,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:10,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602995184] [2022-01-10 21:25:10,794 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:10,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583470839] [2022-01-10 21:25:10,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583470839] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 21:25:10,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 21:25:10,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-01-10 21:25:10,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164759063] [2022-01-10 21:25:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:25:10,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 21:25:10,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:10,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 21:25:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-10 21:25:10,797 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 21:25:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:10,998 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2022-01-10 21:25:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 21:25:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 21:25:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:10,999 INFO L225 Difference]: With dead ends: 53 [2022-01-10 21:25:10,999 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 21:25:10,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 21:25:11,000 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 83 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:11,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 63 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:25:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 21:25:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-01-10 21:25:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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 21:25:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-01-10 21:25:11,014 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2022-01-10 21:25:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:11,014 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-01-10 21:25:11,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 21:25:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-01-10 21:25:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 21:25:11,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:11,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:11,035 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 21:25:11,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:11,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -421053660, now seen corresponding path program 1 times [2022-01-10 21:25:11,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:11,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313912555] [2022-01-10 21:25:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:11,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:11,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:11,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103590879] [2022-01-10 21:25:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:11,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:11,240 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 21:25:11,241 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 21:25:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:25:11,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-10 21:25:11,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:25:11,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:25:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:25:11,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313912555] [2022-01-10 21:25:11,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:11,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103590879] [2022-01-10 21:25:11,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103590879] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:25:11,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 21:25:11,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-01-10 21:25:11,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32725114] [2022-01-10 21:25:11,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 21:25:11,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 21:25:11,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 21:25:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-10 21:25:11,862 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 21:25:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:12,826 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-01-10 21:25:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 21:25:12,830 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 22 [2022-01-10 21:25:12,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:12,830 INFO L225 Difference]: With dead ends: 76 [2022-01-10 21:25:12,830 INFO L226 Difference]: Without dead ends: 57 [2022-01-10 21:25:12,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2022-01-10 21:25:12,831 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 154 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:12,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 51 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 21:25:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-10 21:25:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2022-01-10 21:25:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-01-10 21:25:12,838 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 22 [2022-01-10 21:25:12,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:12,839 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-01-10 21:25:12,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 21:25:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-01-10 21:25:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 21:25:12,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:12,839 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:12,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 21:25:13,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:13,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:13,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 473479700, now seen corresponding path program 2 times [2022-01-10 21:25:13,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:13,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948408134] [2022-01-10 21:25:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:13,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:13,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454633699] [2022-01-10 21:25:13,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 21:25:13,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:13,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:13,065 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 21:25:13,067 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 21:25:13,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 21:25:13,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:25:13,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 21:25:13,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 21:25:13,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:25:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 21:25:13,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:13,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948408134] [2022-01-10 21:25:13,759 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:13,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454633699] [2022-01-10 21:25:13,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454633699] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:25:13,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 21:25:13,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2022-01-10 21:25:13,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457884756] [2022-01-10 21:25:13,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 21:25:13,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 21:25:13,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:13,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 21:25:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-01-10 21:25:13,761 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:14,353 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2022-01-10 21:25:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 21:25:14,354 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 21:25:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:14,354 INFO L225 Difference]: With dead ends: 94 [2022-01-10 21:25:14,354 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 21:25:14,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-01-10 21:25:14,355 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 121 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:14,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 77 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:25:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 21:25:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2022-01-10 21:25:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 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 21:25:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2022-01-10 21:25:14,367 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 26 [2022-01-10 21:25:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:14,368 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2022-01-10 21:25:14,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-01-10 21:25:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 21:25:14,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:14,369 INFO L514 BasicCegarLoop]: trace histogram [10, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:14,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-10 21:25:14,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:14,573 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash -17470542, now seen corresponding path program 3 times [2022-01-10 21:25:14,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:14,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796792453] [2022-01-10 21:25:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:14,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:14,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:14,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308329887] [2022-01-10 21:25:14,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 21:25:14,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:14,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:14,598 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 21:25:14,599 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 21:25:16,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-10 21:25:16,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:25:16,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 21:25:16,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 21:25:16,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:25:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 21:25:16,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:16,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796792453] [2022-01-10 21:25:16,905 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:16,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308329887] [2022-01-10 21:25:16,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308329887] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:25:16,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 21:25:16,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-10 21:25:16,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823955373] [2022-01-10 21:25:16,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 21:25:16,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 21:25:16,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 21:25:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-10 21:25:16,906 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:17,744 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2022-01-10 21:25:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 21:25:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-10 21:25:17,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:17,745 INFO L225 Difference]: With dead ends: 101 [2022-01-10 21:25:17,746 INFO L226 Difference]: Without dead ends: 84 [2022-01-10 21:25:17,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-01-10 21:25:17,747 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 87 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:17,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 91 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 21:25:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-10 21:25:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 53. [2022-01-10 21:25:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 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 21:25:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2022-01-10 21:25:17,767 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 45 [2022-01-10 21:25:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:17,769 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2022-01-10 21:25:17,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-01-10 21:25:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 21:25:17,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:17,772 INFO L514 BasicCegarLoop]: trace histogram [10, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:17,780 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 21:25:17,978 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,SelfDestructingSolverStorable7 [2022-01-10 21:25:17,978 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2015330801, now seen corresponding path program 4 times [2022-01-10 21:25:17,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:17,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761628255] [2022-01-10 21:25:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:17,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:18,001 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634713125] [2022-01-10 21:25:18,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 21:25:18,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:18,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:18,003 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 21:25:18,004 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 21:25:18,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 21:25:18,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:25:18,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 21:25:18,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:25:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 57 proven. 28 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 21:25:18,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:25:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 58 proven. 27 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 21:25:18,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:25:18,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761628255] [2022-01-10 21:25:18,516 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:25:18,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634713125] [2022-01-10 21:25:18,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634713125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:25:18,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 21:25:18,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2022-01-10 21:25:18,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493913552] [2022-01-10 21:25:18,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 21:25:18,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 21:25:18,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:25:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 21:25:18,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-01-10 21:25:18,528 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:25:23,298 INFO L93 Difference]: Finished difference Result 190 states and 235 transitions. [2022-01-10 21:25:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 21:25:23,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-10 21:25:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:25:23,299 INFO L225 Difference]: With dead ends: 190 [2022-01-10 21:25:23,299 INFO L226 Difference]: Without dead ends: 154 [2022-01-10 21:25:23,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2022-01-10 21:25:23,300 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 268 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:25:23,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 165 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 21:25:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-10 21:25:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 56. [2022-01-10 21:25:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 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 21:25:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-01-10 21:25:23,330 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 46 [2022-01-10 21:25:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:25:23,330 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-01-10 21:25:23,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:25:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-01-10 21:25:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 21:25:23,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:25:23,331 INFO L514 BasicCegarLoop]: trace histogram [13, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:25:23,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-10 21:25:23,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:23,532 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:25:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:25:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash 200453600, now seen corresponding path program 5 times [2022-01-10 21:25:23,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:25:23,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336730407] [2022-01-10 21:25:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:25:23,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:25:23,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:25:23,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620060656] [2022-01-10 21:25:23,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 21:25:23,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:25:23,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:25:23,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:25:23,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process