/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 17:35:23,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 17:35:23,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 17:35:23,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 17:35:23,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 17:35:23,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 17:35:23,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 17:35:23,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 17:35:23,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 17:35:23,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 17:35:23,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 17:35:23,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 17:35:23,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 17:35:23,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 17:35:23,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 17:35:23,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 17:35:23,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 17:35:23,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 17:35:23,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 17:35:23,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 17:35:23,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 17:35:23,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 17:35:23,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 17:35:23,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 17:35:23,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 17:35:23,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 17:35:23,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 17:35:23,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 17:35:23,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 17:35:23,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 17:35:23,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 17:35:23,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 17:35:23,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 17:35:23,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 17:35:23,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 17:35:23,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 17:35:23,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 17:35:23,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 17:35:23,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 17:35:23,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 17:35:23,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 17:35:23,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 17:35:23,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 17:35:23,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 17:35:23,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 17:35:23,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 17:35:23,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 17:35:23,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 17:35:23,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 17:35:23,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 17:35:23,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:35:23,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 17:35:23,440 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 17:35:23,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 17:35:23,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 17:35:23,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 17:35:23,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 17:35:23,629 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 17:35:23,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-03-15 17:35:23,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7e754dc/bf9ae2e8eb454e3084aa00b256fa8113/FLAG70bc92e58 [2022-03-15 17:35:24,134 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 17:35:24,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-03-15 17:35:24,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7e754dc/bf9ae2e8eb454e3084aa00b256fa8113/FLAG70bc92e58 [2022-03-15 17:35:24,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7e754dc/bf9ae2e8eb454e3084aa00b256fa8113 [2022-03-15 17:35:24,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 17:35:24,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 17:35:24,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 17:35:24,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 17:35:24,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 17:35:24,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:35:24" (1/1) ... [2022-03-15 17:35:24,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adf22c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:24, skipping insertion in model container [2022-03-15 17:35:24,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:35:24" (1/1) ... [2022-03-15 17:35:24,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 17:35:24,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 17:35:24,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i[938,951] [2022-03-15 17:35:25,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:35:25,034 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 17:35:25,046 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i[938,951] [2022-03-15 17:35:25,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:35:25,123 INFO L208 MainTranslator]: Completed translation [2022-03-15 17:35:25,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25 WrapperNode [2022-03-15 17:35:25,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 17:35:25,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 17:35:25,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 17:35:25,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 17:35:25,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,173 INFO L137 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 122 [2022-03-15 17:35:25,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 17:35:25,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 17:35:25,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 17:35:25,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 17:35:25,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 17:35:25,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 17:35:25,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 17:35:25,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 17:35:25,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (1/1) ... [2022-03-15 17:35:25,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:35:25,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:35:25,242 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) [2022-03-15 17:35:25,259 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 [2022-03-15 17:35:25,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 17:35:25,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 17:35:25,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 17:35:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 17:35:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 17:35:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-03-15 17:35:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-03-15 17:35:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-03-15 17:35:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-03-15 17:35:25,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 17:35:25,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 17:35:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 17:35:25,273 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 17:35:25,388 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 17:35:25,389 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 17:35:25,562 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 17:35:25,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 17:35:25,608 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 17:35:25,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:35:25 BoogieIcfgContainer [2022-03-15 17:35:25,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 17:35:25,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 17:35:25,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 17:35:25,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 17:35:25,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 05:35:24" (1/3) ... [2022-03-15 17:35:25,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e12f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:35:25, skipping insertion in model container [2022-03-15 17:35:25,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:35:25" (2/3) ... [2022-03-15 17:35:25,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e12f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:35:25, skipping insertion in model container [2022-03-15 17:35:25,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:35:25" (3/3) ... [2022-03-15 17:35:25,614 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2022-03-15 17:35:25,618 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 17:35:25,618 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 17:35:25,618 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-03-15 17:35:25,618 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,640 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,641 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,641 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,641 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,641 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,642 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,643 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,643 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,643 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,643 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,645 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,646 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,646 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,646 WARN L322 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,647 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,647 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,647 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,647 WARN L322 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:35:25,649 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 17:35:25,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 17:35:25,682 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 17:35:25,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 17:35:25,690 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 17:35:25,695 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 153 transitions, 322 flow [2022-03-15 17:35:25,697 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 153 transitions, 322 flow [2022-03-15 17:35:25,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 153 transitions, 322 flow [2022-03-15 17:35:25,733 INFO L129 PetriNetUnfolder]: 12/151 cut-off events. [2022-03-15 17:35:25,733 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 17:35:25,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 151 events. 12/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-03-15 17:35:25,737 INFO L116 LiptonReduction]: Number of co-enabled transitions 308 [2022-03-15 17:35:39,528 INFO L131 LiptonReduction]: Checked pairs total: 807 [2022-03-15 17:35:39,528 INFO L133 LiptonReduction]: Total number of compositions: 172 [2022-03-15 17:35:39,536 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 60 flow [2022-03-15 17:35:39,548 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 53 states have internal predecessors, (118), 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) [2022-03-15 17:35:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 53 states have internal predecessors, (118), 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) [2022-03-15 17:35:39,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 17:35:39,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:35:39,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:35:39,554 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:35:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:35:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1120133706, now seen corresponding path program 1 times [2022-03-15 17:35:39,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:35:39,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933285593] [2022-03-15 17:35:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:35:39,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:35:39,667 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:35:39,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277740727] [2022-03-15 17:35:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:35:39,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:35:39,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:35:39,676 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) [2022-03-15 17:35:39,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 17:35:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:35:39,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 17:35:39,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:35:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:35:40,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:35:40,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:35:40,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933285593] [2022-03-15 17:35:40,010 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:35:40,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277740727] [2022-03-15 17:35:40,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277740727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:35:40,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:35:40,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 17:35:40,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1455721569] [2022-03-15 17:35:40,013 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:35:40,017 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:35:40,031 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2022-03-15 17:35:40,031 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:35:40,376 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:35:40,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 17:35:40,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:35:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 17:35:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:35:40,395 INFO L87 Difference]: Start difference. First operand has 54 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 53 states have internal predecessors, (118), 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 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-03-15 17:35:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:35:40,925 INFO L93 Difference]: Finished difference Result 94 states and 208 transitions. [2022-03-15 17:35:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 17:35:40,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-03-15 17:35:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:35:40,935 INFO L225 Difference]: With dead ends: 94 [2022-03-15 17:35:40,935 INFO L226 Difference]: Without dead ends: 94 [2022-03-15 17:35:40,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:35:40,938 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 17:35:40,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 17:35:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-15 17:35:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2022-03-15 17:35:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 2.3) internal successors, (184), 82 states have internal predecessors, (184), 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) [2022-03-15 17:35:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 184 transitions. [2022-03-15 17:35:40,963 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 184 transitions. Word has length 13 [2022-03-15 17:35:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:35:40,963 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 184 transitions. [2022-03-15 17:35:40,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-03-15 17:35:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 184 transitions. [2022-03-15 17:35:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 17:35:40,964 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:35:40,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:35:40,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-15 17:35:41,168 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 [2022-03-15 17:35:41,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:35:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:35:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1120133705, now seen corresponding path program 1 times [2022-03-15 17:35:41,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:35:41,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849841921] [2022-03-15 17:35:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:35:41,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:35:41,191 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:35:41,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497754420] [2022-03-15 17:35:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:35:41,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:35:41,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:35:41,208 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) [2022-03-15 17:35:41,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 17:35:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:35:41,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-15 17:35:41,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:35:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:35:41,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:35:41,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:35:41,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849841921] [2022-03-15 17:35:41,309 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:35:41,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497754420] [2022-03-15 17:35:41,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497754420] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:35:41,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:35:41,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 17:35:41,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1954140068] [2022-03-15 17:35:41,309 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:35:41,310 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:35:41,313 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2022-03-15 17:35:41,313 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:35:41,561 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [598#(or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)))] [2022-03-15 17:35:41,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 17:35:41,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:35:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 17:35:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 17:35:41,562 INFO L87 Difference]: Start difference. First operand 83 states and 184 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:35:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:35:41,858 INFO L93 Difference]: Finished difference Result 169 states and 347 transitions. [2022-03-15 17:35:41,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 17:35:41,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 17:35:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:35:41,861 INFO L225 Difference]: With dead ends: 169 [2022-03-15 17:35:41,861 INFO L226 Difference]: Without dead ends: 133 [2022-03-15 17:35:41,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 17:35:41,862 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:35:41,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 12 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 17:35:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-03-15 17:35:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 112. [2022-03-15 17:35:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 2.2660550458715596) internal successors, (247), 111 states have internal predecessors, (247), 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) [2022-03-15 17:35:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 247 transitions. [2022-03-15 17:35:41,870 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 247 transitions. Word has length 13 [2022-03-15 17:35:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:35:41,870 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 247 transitions. [2022-03-15 17:35:41,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:35:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 247 transitions. [2022-03-15 17:35:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:35:41,871 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:35:41,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:35:41,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 17:35:42,088 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 [2022-03-15 17:35:42,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:35:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:35:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash 370357612, now seen corresponding path program 1 times [2022-03-15 17:35:42,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:35:42,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137501694] [2022-03-15 17:35:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:35:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:35:42,153 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:35:42,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806174472] [2022-03-15 17:35:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:35:42,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:35:42,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:35:42,155 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) [2022-03-15 17:35:42,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 17:35:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:35:42,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-15 17:35:42,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:35:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:35:42,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:35:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:35:54,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:35:54,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137501694] [2022-03-15 17:35:54,193 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:35:54,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806174472] [2022-03-15 17:35:54,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806174472] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:35:54,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-15 17:35:54,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-03-15 17:35:54,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2145105736] [2022-03-15 17:35:54,194 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:35:54,195 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:35:54,200 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2022-03-15 17:35:54,200 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:35:58,704 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [1090#(or (<= (mod ~a~0 4294967296) (mod ~b~0 4294967296)) (= (mod (+ (* 4294967295 (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) ~b~0 (* 4294967295 ~a~0) |ULTIMATE.start_main_~a_in~0#1|) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))), 1088#(and (or (= (mod (+ (* 4294967295 ~a~0) (* 4294967295 (mod ~a~0 4294967296)) |ULTIMATE.start_main_~a_in~0#1|) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))))), 1089#(and (or (= (mod (+ (* 4294967295 ~a~0) (* 4294967295 (mod ~a~0 4294967296)) |ULTIMATE.start_main_~a_in~0#1|) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (mod (+ (* 4294967295 (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) ~b~0 (* 4294967295 ~a~0) |ULTIMATE.start_main_~a_in~0#1|) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))))] [2022-03-15 17:35:58,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 17:35:58,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:35:58,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 17:35:58,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=101, Unknown=6, NotChecked=0, Total=156 [2022-03-15 17:35:58,705 INFO L87 Difference]: Start difference. First operand 112 states and 247 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:36:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:36:02,858 INFO L93 Difference]: Finished difference Result 221 states and 451 transitions. [2022-03-15 17:36:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 17:36:02,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 17:36:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:36:02,863 INFO L225 Difference]: With dead ends: 221 [2022-03-15 17:36:02,863 INFO L226 Difference]: Without dead ends: 221 [2022-03-15 17:36:02,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=71, Invalid=133, Unknown=6, NotChecked=0, Total=210 [2022-03-15 17:36:02,864 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 84 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 17:36:02,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 20 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 17:36:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-03-15 17:36:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 176. [2022-03-15 17:36:02,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 173 states have (on average 2.2023121387283235) internal successors, (381), 175 states have internal predecessors, (381), 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) [2022-03-15 17:36:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 381 transitions. [2022-03-15 17:36:02,876 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 381 transitions. Word has length 15 [2022-03-15 17:36:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:36:02,876 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 381 transitions. [2022-03-15 17:36:02,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:36:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 381 transitions. [2022-03-15 17:36:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:36:02,877 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:36:02,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:36:02,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 17:36:03,081 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 [2022-03-15 17:36:03,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:36:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:36:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash 370357610, now seen corresponding path program 1 times [2022-03-15 17:36:03,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:36:03,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34522948] [2022-03-15 17:36:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:36:03,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:36:03,101 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:36:03,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772479638] [2022-03-15 17:36:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:36:03,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:36:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:36:03,102 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) [2022-03-15 17:36:03,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 17:36:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:36:03,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 17:36:03,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:36:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 17:36:03,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:36:03,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:36:03,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34522948] [2022-03-15 17:36:03,304 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:36:03,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772479638] [2022-03-15 17:36:03,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772479638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:36:03,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:36:03,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 17:36:03,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1070336538] [2022-03-15 17:36:03,304 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:36:03,306 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:36:03,310 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2022-03-15 17:36:03,310 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:36:04,394 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [1714#(and (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (<= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod ~a~0 4294967296))) (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296)))), 1715#(and (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (<= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod ~a~0 4294967296))) (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296))) (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (<= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296))))), 1716#(and (or (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296))) (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (<= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))))] [2022-03-15 17:36:04,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 17:36:04,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:36:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 17:36:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:36:04,395 INFO L87 Difference]: Start difference. First operand 176 states and 381 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:36:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:36:05,629 INFO L93 Difference]: Finished difference Result 316 states and 660 transitions. [2022-03-15 17:36:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 17:36:05,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 17:36:05,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:36:05,633 INFO L225 Difference]: With dead ends: 316 [2022-03-15 17:36:05,633 INFO L226 Difference]: Without dead ends: 262 [2022-03-15 17:36:05,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:36:05,634 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:36:05,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 13 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 17:36:05,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-03-15 17:36:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 219. [2022-03-15 17:36:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 216 states have (on average 2.2222222222222223) internal successors, (480), 218 states have internal predecessors, (480), 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) [2022-03-15 17:36:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 480 transitions. [2022-03-15 17:36:05,643 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 480 transitions. Word has length 15 [2022-03-15 17:36:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:36:05,643 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 480 transitions. [2022-03-15 17:36:05,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:36:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 480 transitions. [2022-03-15 17:36:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:36:05,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:36:05,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:36:05,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 17:36:05,849 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 [2022-03-15 17:36:05,850 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:36:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:36:05,850 INFO L85 PathProgramCache]: Analyzing trace with hash 370357611, now seen corresponding path program 1 times [2022-03-15 17:36:05,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:36:05,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930504184] [2022-03-15 17:36:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:36:05,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:36:05,864 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:36:05,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8927838] [2022-03-15 17:36:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:36:05,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:36:05,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:36:05,865 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) [2022-03-15 17:36:05,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 17:36:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:36:05,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-15 17:36:05,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:36:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 17:36:06,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:36:06,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:36:06,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930504184] [2022-03-15 17:36:06,032 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:36:06,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8927838] [2022-03-15 17:36:06,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8927838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:36:06,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:36:06,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 17:36:06,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1738282372] [2022-03-15 17:36:06,033 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:36:06,034 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:36:06,037 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2022-03-15 17:36:06,037 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:36:06,774 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2523#(or (= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) (<= (mod ~a~0 4294967296) (mod ~b~0 4294967296)) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))), 2521#(and (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod ~a~0 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))))), 2522#(and (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))) (or (= (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod ~a~0 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))))] [2022-03-15 17:36:06,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 17:36:06,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:36:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 17:36:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:36:06,775 INFO L87 Difference]: Start difference. First operand 219 states and 480 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:36:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:36:07,351 INFO L93 Difference]: Finished difference Result 239 states and 503 transitions. [2022-03-15 17:36:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 17:36:07,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 17:36:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:36:07,354 INFO L225 Difference]: With dead ends: 239 [2022-03-15 17:36:07,354 INFO L226 Difference]: Without dead ends: 209 [2022-03-15 17:36:07,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:36:07,354 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 17:36:07,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 12 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 17:36:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-03-15 17:36:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2022-03-15 17:36:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 171 states have (on average 2.216374269005848) internal successors, (379), 173 states have internal predecessors, (379), 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) [2022-03-15 17:36:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 379 transitions. [2022-03-15 17:36:07,360 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 379 transitions. Word has length 15 [2022-03-15 17:36:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:36:07,360 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 379 transitions. [2022-03-15 17:36:07,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:36:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 379 transitions. [2022-03-15 17:36:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:36:07,361 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:36:07,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:36:07,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 17:36:07,583 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 [2022-03-15 17:36:07,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:36:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:36:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1831609907, now seen corresponding path program 1 times [2022-03-15 17:36:07,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:36:07,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787596603] [2022-03-15 17:36:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:36:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:36:07,614 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:36:07,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817221421] [2022-03-15 17:36:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:36:07,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:36:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:36:07,619 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) [2022-03-15 17:36:07,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 17:36:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:36:07,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-15 17:36:07,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:36:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:36:08,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:36:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:36:14,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:36:14,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787596603] [2022-03-15 17:36:14,489 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:36:14,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817221421] [2022-03-15 17:36:14,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817221421] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 17:36:14,490 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 17:36:14,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-03-15 17:36:14,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [622909192] [2022-03-15 17:36:14,490 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:36:14,491 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:36:14,493 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 60 transitions. [2022-03-15 17:36:14,493 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:36:40,928 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:36:40,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 17:36:40,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:36:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 17:36:40,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2022-03-15 17:36:40,930 INFO L87 Difference]: Start difference. First operand 174 states and 379 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-03-15 17:36:42,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-15 17:36:44,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-15 17:36:47,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-15 17:36:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:36:47,900 INFO L93 Difference]: Finished difference Result 209 states and 453 transitions. [2022-03-15 17:36:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 17:36:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 17:36:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:36:47,904 INFO L225 Difference]: With dead ends: 209 [2022-03-15 17:36:47,904 INFO L226 Difference]: Without dead ends: 196 [2022-03-15 17:36:47,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2022-03-15 17:36:47,905 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:36:47,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-03-15 17:36:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-03-15 17:36:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 182. [2022-03-15 17:36:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 179 states have (on average 2.2290502793296088) internal successors, (399), 181 states have internal predecessors, (399), 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) [2022-03-15 17:36:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 399 transitions. [2022-03-15 17:36:47,912 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 399 transitions. Word has length 15 [2022-03-15 17:36:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:36:47,912 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 399 transitions. [2022-03-15 17:36:47,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-03-15 17:36:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 399 transitions. [2022-03-15 17:36:47,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:36:47,913 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:36:47,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:36:47,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 17:36:48,113 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 [2022-03-15 17:36:48,114 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:36:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:36:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1390037006, now seen corresponding path program 2 times [2022-03-15 17:36:48,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:36:48,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470053208] [2022-03-15 17:36:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:36:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:36:48,141 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:36:48,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007809153] [2022-03-15 17:36:48,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:36:48,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:36:48,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:36:48,150 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) [2022-03-15 17:36:48,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 17:36:53,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:36:53,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:36:53,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-15 17:36:53,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:36:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:36:54,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:37:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:37:47,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:37:47,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470053208] [2022-03-15 17:37:47,816 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:37:47,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007809153] [2022-03-15 17:37:47,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007809153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:37:47,816 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-15 17:37:47,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-03-15 17:37:47,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2084780192] [2022-03-15 17:37:47,817 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:37:47,818 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:37:47,822 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 100 transitions. [2022-03-15 17:37:47,822 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:38:34,687 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3892#(or (= (mod (+ (* 2 ~b~0) (* ~a~0 8589934591) (* 8589934590 (mod (+ ~a~0 (* 4294967294 ~b~0)) 4294967296)) |ULTIMATE.start_main_~a_in~0#1|) 8589934592) 0) (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967294 ~b~0)) 4294967296))) (not (< (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))), 3889#(and (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< (mod ~a~0 4294967296) (mod (+ (* 4294967295 (mod ~a~0 4294967296)) |ULTIMATE.start_main_~a_in~0#1|) 4294967296))) (or (= (mod (+ (* ~a~0 8589934591) |ULTIMATE.start_main_~a_in~0#1| (* 8589934590 (mod ~a~0 4294967296))) 8589934592) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))))), 3890#(and (or (< (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))) (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< (mod ~a~0 4294967296) (mod (+ (* 4294967295 (mod ~a~0 4294967296)) |ULTIMATE.start_main_~a_in~0#1|) 4294967296))) (or (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296))) (= (mod (+ (* ~a~0 8589934591) ~b~0 (* 8589934590 (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) |ULTIMATE.start_main_~a_in~0#1|) 8589934592) 0)) (or (= (mod (+ (* ~a~0 8589934591) |ULTIMATE.start_main_~a_in~0#1| (* 8589934590 (mod ~a~0 4294967296))) 8589934592) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))))), 3891#(and (or (< (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)))) (or (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (not (= (mod ~b~0 4294967296) (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296))) (= (mod (+ (* ~a~0 8589934591) ~b~0 (* 8589934590 (mod (+ ~a~0 (* 4294967295 ~b~0)) 4294967296)) |ULTIMATE.start_main_~a_in~0#1|) 8589934592) 0)))] [2022-03-15 17:38:34,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 17:38:34,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:38:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 17:38:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=189, Unknown=18, NotChecked=0, Total=272 [2022-03-15 17:38:34,689 INFO L87 Difference]: Start difference. First operand 182 states and 399 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:38:36,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:38:48,953 WARN L228 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 97 DAG size of output: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 17:38:53,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:01,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:11,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:22,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:25,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:29,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:31,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:33,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:39,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:41,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 17:39:47,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-15 17:39:52,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-15 17:39:54,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-15 17:39:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:39:54,241 INFO L93 Difference]: Finished difference Result 393 states and 826 transitions. [2022-03-15 17:39:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 17:39:54,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 17:39:54,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:39:54,246 INFO L225 Difference]: With dead ends: 393 [2022-03-15 17:39:54,247 INFO L226 Difference]: Without dead ends: 355 [2022-03-15 17:39:54,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 17 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 135.7s TimeCoverageRelationStatistics Valid=175, Invalid=448, Unknown=27, NotChecked=0, Total=650 [2022-03-15 17:39:54,247 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 117 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 44 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:39:54,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 37 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 439 Invalid, 8 Unknown, 0 Unchecked, 37.0s Time] [2022-03-15 17:39:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-15 17:39:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 239. [2022-03-15 17:39:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 236 states have (on average 2.288135593220339) internal successors, (540), 238 states have internal predecessors, (540), 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) [2022-03-15 17:39:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 540 transitions. [2022-03-15 17:39:54,254 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 540 transitions. Word has length 17 [2022-03-15 17:39:54,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:39:54,254 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 540 transitions. [2022-03-15 17:39:54,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:39:54,254 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 540 transitions. [2022-03-15 17:39:54,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:39:54,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:39:54,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:39:54,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 17:39:54,466 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 [2022-03-15 17:39:54,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:39:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:39:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash -811930512, now seen corresponding path program 1 times [2022-03-15 17:39:54,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:39:54,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175039376] [2022-03-15 17:39:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:39:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:39:54,487 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:39:54,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293301112] [2022-03-15 17:39:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:39:54,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:39:54,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:39:54,492 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) [2022-03-15 17:39:54,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 17:39:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:39:57,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-15 17:39:57,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:39:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:39:58,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:40:43,972 WARN L228 SmtUtils]: Spent 7.98s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 17:40:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:40:55,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:40:55,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175039376] [2022-03-15 17:40:55,354 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:40:55,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293301112] [2022-03-15 17:40:55,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293301112] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:40:55,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-15 17:40:55,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-03-15 17:40:55,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [142991307] [2022-03-15 17:40:55,355 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:40:55,356 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:40:55,359 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 69 transitions. [2022-03-15 17:40:55,359 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:41:05,913 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [4894#(and (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (<= (mod ~a~0 4294967296) (mod ~b~0 4294967296)) (<= (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296) (mod ~b~0 4294967296))) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (<= (mod ~a~0 4294967296) (mod ~b~0 4294967296)) (= (+ ~b~0 |ULTIMATE.start_main_~a_in~0#1|) ~a~0)) (or (< (mod ~b~0 4294967296) (mod ~a~0 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (< (mod ~b~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)) (= |ULTIMATE.start_main_~b_in~0#1| ~b~0)) (or (< (mod ~b~0 4294967296) (mod ~a~0 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (= ~a~0 (+ (* (- 1) ~b~0) |ULTIMATE.start_main_~a_in~0#1|)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (< 0 (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))), 4892#(and (or (< (mod ~b~0 4294967296) (mod ~a~0 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (< (mod ~b~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296))) (< 0 (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (or (not (< (mod ~b~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296))) (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (+ ~a~0 (* (- 1) ~b~0)) (+ (* (- 1) ~b~0) |ULTIMATE.start_main_~a_in~0#1|))) (or (< (mod ~b~0 4294967296) (mod ~a~0 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (= ~a~0 (+ (* (- 1) ~b~0) |ULTIMATE.start_main_~a_in~0#1|))) (= |ULTIMATE.start_main_~b_in~0#1| ~b~0) (or (not (< (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (+ ~a~0 (* (- 1) ~b~0)) (+ (* (- 1) ~b~0) |ULTIMATE.start_main_~a_in~0#1|)) (= (+ ~a~0 (* (- 1) ~b~0)) |ULTIMATE.start_main_~a_in~0#1|))), 4893#(and (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (+ |ULTIMATE.start_main_~b_in~0#1| ~a~0) |ULTIMATE.start_main_~a_in~0#1|)) (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (mod (+ |ULTIMATE.start_main_~b_in~0#1| (* 4294967295 ~a~0) (* 4294967295 (mod ~a~0 4294967296))) 4294967296) 0)) (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (< (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))))] [2022-03-15 17:41:05,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 17:41:05,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:41:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 17:41:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=139, Unknown=11, NotChecked=0, Total=210 [2022-03-15 17:41:05,914 INFO L87 Difference]: Start difference. First operand 239 states and 540 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2022-03-15 17:41:17,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-15 17:41:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:41:19,607 INFO L93 Difference]: Finished difference Result 349 states and 757 transitions. [2022-03-15 17:41:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 17:41:19,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 [2022-03-15 17:41:19,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:41:19,612 INFO L225 Difference]: With dead ends: 349 [2022-03-15 17:41:19,612 INFO L226 Difference]: Without dead ends: 297 [2022-03-15 17:41:19,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 50.4s TimeCoverageRelationStatistics Valid=115, Invalid=251, Unknown=14, NotChecked=0, Total=380 [2022-03-15 17:41:19,612 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 59 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-15 17:41:19,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 36 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 272 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-03-15 17:41:19,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-03-15 17:41:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 264. [2022-03-15 17:41:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 261 states have (on average 2.314176245210728) internal successors, (604), 263 states have internal predecessors, (604), 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) [2022-03-15 17:41:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 604 transitions. [2022-03-15 17:41:19,618 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 604 transitions. Word has length 17 [2022-03-15 17:41:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:41:19,618 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 604 transitions. [2022-03-15 17:41:19,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2022-03-15 17:41:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 604 transitions. [2022-03-15 17:41:19,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:41:19,619 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:41:19,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:41:19,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-15 17:41:19,819 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 [2022-03-15 17:41:19,820 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:41:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:41:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1212723996, now seen corresponding path program 2 times [2022-03-15 17:41:19,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:41:19,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434637478] [2022-03-15 17:41:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:41:19,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:41:19,831 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:41:19,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815736244] [2022-03-15 17:41:19,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:41:19,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:41:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:41:19,832 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) [2022-03-15 17:41:19,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 17:41:20,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:41:20,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:41:20,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:41:20,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:41:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:41:21,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:41:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:41:49,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:41:49,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434637478] [2022-03-15 17:41:49,833 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:41:49,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815736244] [2022-03-15 17:41:49,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815736244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:41:49,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-15 17:41:49,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-03-15 17:41:49,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [130040227] [2022-03-15 17:41:49,834 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:41:49,835 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:41:49,838 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 70 transitions. [2022-03-15 17:41:49,838 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:41:54,874 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [5888#(and (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (= (mod (+ (mod ~a~0 4294967296) (* |ULTIMATE.start_main_~b_in~0#1| 4294967295)) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (mod (+ |ULTIMATE.start_main_~b_in~0#1| (* 4294967295 ~a~0) (* 4294967295 (mod ~a~0 4294967296))) 4294967296) 0)) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (+ (* (- 1) |ULTIMATE.start_main_~b_in~0#1|) |ULTIMATE.start_main_~a_in~0#1|) ~a~0)) (or (< (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (= (mod (+ (mod ~a~0 4294967296) (* |ULTIMATE.start_main_~b_in~0#1| 4294967295)) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296)))), 5889#(and (or (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)) (= |ULTIMATE.start_main_~b_in~0#1| ~b~0)) (or (< 0 (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))))] [2022-03-15 17:41:54,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 17:41:54,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:41:54,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 17:41:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=85, Unknown=6, NotChecked=0, Total=132 [2022-03-15 17:41:54,875 INFO L87 Difference]: Start difference. First operand 264 states and 604 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) [2022-03-15 17:42:01,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:42:01,921 INFO L93 Difference]: Finished difference Result 303 states and 677 transitions. [2022-03-15 17:42:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 17:42:01,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) Word has length 17 [2022-03-15 17:42:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:42:01,927 INFO L225 Difference]: With dead ends: 303 [2022-03-15 17:42:01,927 INFO L226 Difference]: Without dead ends: 283 [2022-03-15 17:42:01,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=61, Invalid=115, Unknown=6, NotChecked=0, Total=182 [2022-03-15 17:42:01,927 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:42:01,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 17 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 17:42:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-03-15 17:42:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 253. [2022-03-15 17:42:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 250 states have (on average 2.312) internal successors, (578), 252 states have internal predecessors, (578), 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) [2022-03-15 17:42:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 578 transitions. [2022-03-15 17:42:01,933 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 578 transitions. Word has length 17 [2022-03-15 17:42:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:42:01,933 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 578 transitions. [2022-03-15 17:42:01,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) [2022-03-15 17:42:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 578 transitions. [2022-03-15 17:42:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:42:01,933 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:42:01,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:42:01,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 17:42:02,134 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 [2022-03-15 17:42:02,134 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:42:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:42:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1390064018, now seen corresponding path program 3 times [2022-03-15 17:42:02,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:42:02,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261390834] [2022-03-15 17:42:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:42:02,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:42:02,148 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:42:02,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514097839] [2022-03-15 17:42:02,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:42:02,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:42:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:42:02,154 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) [2022-03-15 17:42:02,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 17:42:03,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 17:42:03,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:42:03,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 17:42:03,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:42:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:42:03,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:42:27,012 WARN L228 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 17:42:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:42:46,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:42:46,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261390834] [2022-03-15 17:42:46,916 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:42:46,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514097839] [2022-03-15 17:42:46,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514097839] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:42:46,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-15 17:42:46,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-03-15 17:42:46,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1746337867] [2022-03-15 17:42:46,920 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:42:46,921 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:42:46,924 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 70 transitions. [2022-03-15 17:42:46,924 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:42:51,313 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [6811#(and (or (< 0 (mod ~b~0 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (< 0 (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))), 6812#(and (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (= (mod (+ (* 4294967295 |ULTIMATE.start_main_~a_in~0#1|) ~a~0 (mod ~a~0 4294967296)) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296) (mod (+ (mod ~a~0 4294967296) |ULTIMATE.start_main_~a_in~0#1|) 4294967296))) (or (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))))] [2022-03-15 17:42:51,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 17:42:51,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:42:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 17:42:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=114, Unknown=11, NotChecked=0, Total=182 [2022-03-15 17:42:51,314 INFO L87 Difference]: Start difference. First operand 253 states and 578 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2022-03-15 17:43:06,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-15 17:43:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:43:07,338 INFO L93 Difference]: Finished difference Result 355 states and 750 transitions. [2022-03-15 17:43:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:43:07,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 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) Word has length 17 [2022-03-15 17:43:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:43:07,345 INFO L225 Difference]: With dead ends: 355 [2022-03-15 17:43:07,345 INFO L226 Difference]: Without dead ends: 343 [2022-03-15 17:43:07,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=152, Invalid=253, Unknown=15, NotChecked=0, Total=420 [2022-03-15 17:43:07,346 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 84 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:43:07,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 25 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-03-15 17:43:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-15 17:43:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 239. [2022-03-15 17:43:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 236 states have (on average 2.3347457627118646) internal successors, (551), 238 states have internal predecessors, (551), 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) [2022-03-15 17:43:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 551 transitions. [2022-03-15 17:43:07,354 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 551 transitions. Word has length 17 [2022-03-15 17:43:07,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:43:07,355 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 551 transitions. [2022-03-15 17:43:07,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2022-03-15 17:43:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 551 transitions. [2022-03-15 17:43:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:43:07,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:43:07,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:43:07,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 17:43:07,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 17:43:07,562 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:43:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:43:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1390064020, now seen corresponding path program 1 times [2022-03-15 17:43:07,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:43:07,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68169695] [2022-03-15 17:43:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:43:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:43:07,573 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:43:07,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116691932] [2022-03-15 17:43:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:43:07,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:43:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:43:07,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:43:07,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 17:43:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:43:08,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 17:43:08,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:43:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:43:10,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:43:13,037 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_aux_mod_v_ULTIMATE.start_check_gcd_~guessed_gcd~0#1_97_65_76| Int) (|aux_mod_aux_mod_v_ULTIMATE.start_check_gcd_~guessed_gcd~0#1_97_65_76| Int)) (let ((.cse1 (mod |aux_mod_aux_mod_v_ULTIMATE.start_check_gcd_~guessed_gcd~0#1_97_65_76| 4294967296)) (.cse0 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_check_gcd_~guessed_gcd~0#1_97_65_76| 4294967296) |aux_mod_aux_mod_v_ULTIMATE.start_check_gcd_~guessed_gcd~0#1_97_65_76|))) (or (<= .cse0 1) (not (= (mod (mod (mod |c_ULTIMATE.start_main_~b_in~0#1| 4294967296) .cse1) 4294967296) 0)) (<= |aux_mod_aux_mod_v_ULTIMATE.start_check_gcd_~guessed_gcd~0#1_97_65_76| (mod c_~a~0 4294967296)) (<= 4294967296 |aux_mod_aux_mod_v_ULTIMATE.start_check_gcd_~guessed_gcd~0#1_97_65_76|) (not (= 0 (mod (mod (mod |c_ULTIMATE.start_main_~a_in~0#1| 4294967296) .cse1) 4294967296))) (<= 4294967296 .cse0)))) is different from false [2022-03-15 17:44:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-15 17:44:14,823 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:44:14,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68169695] [2022-03-15 17:44:14,823 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:44:14,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116691932] [2022-03-15 17:44:14,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116691932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:44:14,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-15 17:44:14,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-03-15 17:44:14,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2055586625] [2022-03-15 17:44:14,824 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:44:14,825 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:44:14,828 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 70 transitions. [2022-03-15 17:44:14,828 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:44:36,975 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7766#(and (or (< 0 (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (or (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)) (= |ULTIMATE.start_main_~b_in~0#1| ~b~0)) (or (< 0 (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))), 7767#(and (or (< 0 (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= |ULTIMATE.start_main_~b_in~0#1| (+ (* 4294967296 (div (+ (* (- 1) |ULTIMATE.start_main_~a_in~0#1|) ~a~0 (mod ~a~0 4294967296)) (- 4294967296))) (mod ~a~0 4294967296))) (= (+ (* (- 1) |ULTIMATE.start_main_~a_in~0#1|) |ULTIMATE.start_main_~b_in~0#1|) (+ (* 4294967296 (div (+ (* (- 1) |ULTIMATE.start_main_~a_in~0#1|) ~a~0 (mod ~a~0 4294967296)) (- 4294967296))) (mod ~a~0 4294967296)))) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (= (mod (+ (* 4294967295 |ULTIMATE.start_main_~a_in~0#1|) ~a~0 (mod ~a~0 4294967296)) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (< (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296) (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296)) (= (mod (+ (mod ~a~0 4294967296) (* |ULTIMATE.start_main_~b_in~0#1| 4294967295)) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~a_in~0#1| 4294967296)) (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (= (mod (+ (mod ~a~0 4294967296) |ULTIMATE.start_main_~a_in~0#1| (* |ULTIMATE.start_main_~b_in~0#1| 4294967295)) 4294967296) 0) (= (mod (+ (mod ~a~0 4294967296) (* |ULTIMATE.start_main_~b_in~0#1| 4294967295)) 4294967296) 0) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))))] [2022-03-15 17:44:36,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 17:44:36,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:44:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 17:44:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=67, Unknown=16, NotChecked=18, Total=132 [2022-03-15 17:44:36,976 INFO L87 Difference]: Start difference. First operand 239 states and 551 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) [2022-03-15 17:44:46,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-03-15 17:44:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:44:48,953 INFO L93 Difference]: Finished difference Result 298 states and 678 transitions. [2022-03-15 17:44:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 17:44:48,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) Word has length 17 [2022-03-15 17:44:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:44:48,960 INFO L225 Difference]: With dead ends: 298 [2022-03-15 17:44:48,960 INFO L226 Difference]: Without dead ends: 279 [2022-03-15 17:44:48,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=38, Invalid=80, Unknown=18, NotChecked=20, Total=156 [2022-03-15 17:44:48,960 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 44 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-15 17:44:48,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 17 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-03-15 17:44:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-03-15 17:44:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 251. [2022-03-15 17:44:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 248 states have (on average 2.342741935483871) internal successors, (581), 250 states have internal predecessors, (581), 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) [2022-03-15 17:44:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 581 transitions. [2022-03-15 17:44:48,965 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 581 transitions. Word has length 17 [2022-03-15 17:44:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:44:48,965 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 581 transitions. [2022-03-15 17:44:48,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) [2022-03-15 17:44:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 581 transitions. [2022-03-15 17:44:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:44:48,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:44:48,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:44:48,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 17:44:49,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-15 17:44:49,170 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:44:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:44:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1101775217, now seen corresponding path program 2 times [2022-03-15 17:44:49,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:44:49,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876494041] [2022-03-15 17:44:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:44:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:44:49,184 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:44:49,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063361442] [2022-03-15 17:44:49,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:44:49,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:44:49,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:44:49,185 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:44:49,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 17:44:50,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:44:50,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:44:50,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:44:50,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:44:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:44:54,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:45:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:45:40,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:45:40,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876494041] [2022-03-15 17:45:40,157 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:45:40,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063361442] [2022-03-15 17:45:40,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063361442] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:45:40,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-15 17:45:40,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-03-15 17:45:40,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [864815840] [2022-03-15 17:45:40,158 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:45:40,159 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:45:40,162 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2022-03-15 17:45:40,162 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:45:50,366 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8679#(and (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< (mod ~a~0 4294967296) (mod (+ ~a~0 (mod ~a~0 4294967296)) 4294967296))) (or (= ~a~0 |ULTIMATE.start_main_~a_in~0#1|) (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296)))) (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (< (mod ~a~0 4294967296) (mod |ULTIMATE.start_main_~b_in~0#1| 4294967296))) (or (not (= (mod ~b~0 4294967296) (mod ~a~0 4294967296))) (= (mod (+ (* 2 ~a~0) (mod ~a~0 4294967296) (* |ULTIMATE.start_main_~b_in~0#1| 4294967295)) 4294967296) 0)))] [2022-03-15 17:45:50,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 17:45:50,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:45:50,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 17:45:50,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=119, Unknown=13, NotChecked=0, Total=182 [2022-03-15 17:45:50,367 INFO L87 Difference]: Start difference. First operand 251 states and 581 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:45:54,069 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~a~0 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~b_in~0#1| 4294967296))) (let ((.cse3 (< .cse1 .cse0)) (.cse4 (* 2 c_~a~0))) (and (< 0 .cse0) (< 0 (mod |c_ULTIMATE.start_main_~a_in~0#1| 4294967296)) (< .cse1 (mod (+ .cse1 c_~a~0) 4294967296)) (let ((.cse2 (+ c_~b~0 c_~a~0))) (or (and (or (= |c_ULTIMATE.start_main_~b_in~0#1| c_~b~0) (and (= |c_ULTIMATE.start_main_~b_in~0#1| .cse2) .cse3)) (< (div (+ (* (- 1) c_~b~0) (- 1) .cse1) (- 4294967296)) (+ (div c_~b~0 4294967296) 1))) (and .cse3 (< .cse1 (mod .cse2 4294967296)) (= |c_ULTIMATE.start_main_~b_in~0#1| (+ c_~b~0 .cse4))))) .cse3 (= |c_ULTIMATE.start_main_~a_in~0#1| c_~a~0) (= (mod (+ (* |c_ULTIMATE.start_main_~b_in~0#1| 4294967295) .cse1 .cse4) 4294967296) 0)))) is different from false [2022-03-15 17:45:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:45:54,844 INFO L93 Difference]: Finished difference Result 298 states and 681 transitions. [2022-03-15 17:45:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 17:45:54,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 17:45:54,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:45:54,850 INFO L225 Difference]: With dead ends: 298 [2022-03-15 17:45:54,850 INFO L226 Difference]: Without dead ends: 283 [2022-03-15 17:45:54,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=52, Invalid=120, Unknown=14, NotChecked=24, Total=210 [2022-03-15 17:45:54,851 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 17:45:54,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 244 Invalid, 0 Unknown, 9 Unchecked, 2.4s Time] [2022-03-15 17:45:54,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-03-15 17:45:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 259. [2022-03-15 17:45:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 256 states have (on average 2.34375) internal successors, (600), 258 states have internal predecessors, (600), 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) [2022-03-15 17:45:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 600 transitions. [2022-03-15 17:45:54,855 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 600 transitions. Word has length 17 [2022-03-15 17:45:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:45:54,855 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 600 transitions. [2022-03-15 17:45:54,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:45:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 600 transitions. [2022-03-15 17:45:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 17:45:54,856 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:45:54,856 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:45:54,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 17:45:55,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-15 17:45:55,063 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-03-15 17:45:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:45:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2049391152, now seen corresponding path program 3 times [2022-03-15 17:45:55,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:45:55,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032577744] [2022-03-15 17:45:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:45:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:45:55,076 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-15 17:45:55,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3310011] [2022-03-15 17:45:55,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:45:55,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:45:55,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:45:55,100 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:45:55,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2022-03-15 17:50:10,121 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 17:50:10,147 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 17:50:11,322 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2022-03-15 17:50:11,326 ERROR L252 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2022-03-15 17:50:11,327 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-03-15 17:50:11,329 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2022-03-15 17:50:11,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 17:50:11,330 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2022-03-15 17:50:11,330 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-03-15 17:50:11,330 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-03-15 17:50:11,331 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 5 remaining) [2022-03-15 17:50:11,331 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 5 remaining) [2022-03-15 17:50:11,332 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2022-03-15 17:50:11,334 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 17:50:11,334 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 17:50:11,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 05:50:11 BasicIcfg [2022-03-15 17:50:11,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 17:50:11,337 INFO L158 Benchmark]: Toolchain (without parser) took 886682.98ms. Allocated memory was 177.2MB in the beginning and 215.0MB in the end (delta: 37.7MB). Free memory was 126.0MB in the beginning and 84.3MB in the end (delta: 41.7MB). Peak memory consumption was 80.8MB. Max. memory is 8.0GB. [2022-03-15 17:50:11,338 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 17:50:11,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.23ms. Allocated memory is still 177.2MB. Free memory was 125.8MB in the beginning and 146.0MB in the end (delta: -20.2MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-03-15 17:50:11,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.48ms. Allocated memory is still 177.2MB. Free memory was 146.0MB in the beginning and 143.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 17:50:11,338 INFO L158 Benchmark]: Boogie Preprocessor took 17.97ms. Allocated memory is still 177.2MB. Free memory was 143.4MB in the beginning and 142.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 17:50:11,339 INFO L158 Benchmark]: RCFGBuilder took 417.54ms. Allocated memory is still 177.2MB. Free memory was 141.8MB in the beginning and 125.6MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-03-15 17:50:11,339 INFO L158 Benchmark]: TraceAbstraction took 885726.15ms. Allocated memory was 177.2MB in the beginning and 215.0MB in the end (delta: 37.7MB). Free memory was 125.0MB in the beginning and 84.3MB in the end (delta: 40.7MB). Peak memory consumption was 79.5MB. Max. memory is 8.0GB. [2022-03-15 17:50:11,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2022-03-15 17:50:11,348 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-03-15 17:50:11,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 469.23ms. Allocated memory is still 177.2MB. Free memory was 125.8MB in the beginning and 146.0MB in the end (delta: -20.2MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.48ms. Allocated memory is still 177.2MB. Free memory was 146.0MB in the beginning and 143.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.97ms. Allocated memory is still 177.2MB. Free memory was 143.4MB in the beginning and 142.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 417.54ms. Allocated memory is still 177.2MB. Free memory was 141.8MB in the beginning and 125.6MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 885726.15ms. Allocated memory was 177.2MB in the beginning and 215.0MB in the end (delta: 37.7MB). Free memory was 125.0MB in the beginning and 84.3MB in the end (delta: 40.7MB). Peak memory consumption was 79.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.8s, 148 PlacesBefore, 27 PlacesAfterwards, 153 TransitionsBefore, 22 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 8 FixpointIterations, 120 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 4 ConcurrentYvCompositions, 10 ChoiceCompositions, 172 TotalNumberOfCompositions, 807 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 566, positive: 512, positive conditional: 0, positive unconditional: 512, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 164, positive: 156, positive conditional: 0, positive unconditional: 156, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 566, positive: 356, positive conditional: 0, positive unconditional: 356, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 164, unknown conditional: 0, unknown unconditional: 164] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 729]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 730]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 3,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 156 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 885.7s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 146.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 593 SdHoareTripleChecker+Valid, 70.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 593 mSDsluCounter, 247 SdHoareTripleChecker+Invalid, 68.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 9 IncrementalHoareTripleChecker+Unchecked, 852 mSDsCounter, 235 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2118 IncrementalHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 235 mSolverCounterUnsat, 59 mSDtfsCounter, 2118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 439 SyntacticMatches, 65 SemanticMatches, 135 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 404.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=8, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 504 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 12.7s SatisfiabilityAnalysisTime, 320.1s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 300 ConstructedInterpolants, 16 QuantifiedInterpolants, 12575 SizeOfPredicates, 73 NumberOfNonLiveVariables, 1996 ConjunctsInSsa, 428 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 4/38 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown