/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/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:53:47,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:53:47,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:53:47,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:53:47,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:53:47,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:53:47,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:53:47,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:53:47,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:53:47,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:53:47,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:53:47,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:53:47,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:53:47,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:53:47,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:53:47,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:53:47,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:53:47,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:53:47,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:53:47,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:53:47,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:53:47,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:53:47,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:53:47,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:53:47,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 18:53:47,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:53:47,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:53:47,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:53:47,954 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 18:53:47,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:53:47,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:53:47,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:53:47,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:53:47,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:53:47,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:53:47,968 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:53:47,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:53:47,968 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:53:47,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:53:47,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:53:47,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:53:47,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:53:47,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:53:47,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:53:47,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:53:47,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:53:47,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:53:47,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:53:47,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:53:47,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:53:47,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:53:47,972 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:53:47,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:53:47,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:53:47,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:53:48,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:53:48,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:53:48,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:53:48,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:53:48,185 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:53:48,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-03-15 18:53:48,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb3a24c/3bf8d91b276a4e3394397144a5042884/FLAGc049f3eee [2022-03-15 18:53:48,615 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:53:48,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-03-15 18:53:48,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb3a24c/3bf8d91b276a4e3394397144a5042884/FLAGc049f3eee [2022-03-15 18:53:48,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb3a24c/3bf8d91b276a4e3394397144a5042884 [2022-03-15 18:53:48,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:53:48,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:53:48,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:53:48,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:53:48,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:53:48,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720d6ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48, skipping insertion in model container [2022-03-15 18:53:48,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:53:48,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:53:48,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-03-15 18:53:48,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:53:48,847 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:53:48,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-03-15 18:53:48,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:53:48,876 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:53:48,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48 WrapperNode [2022-03-15 18:53:48,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:53:48,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:53:48,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:53:48,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:53:48,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,910 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-03-15 18:53:48,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:53:48,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:53:48,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:53:48,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:53:48,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:53:48,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:53:48,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:53:48,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:53:48,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (1/1) ... [2022-03-15 18:53:48,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:53:48,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:53:48,955 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 18:53:48,957 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 18:53:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:53:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 18:53:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 18:53:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 18:53:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 18:53:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:53:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:53:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:53:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 18:53:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 18:53:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:53:48,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:53:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 18:53:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:53:48,989 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 18:53:49,043 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:53:49,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:53:49,182 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:53:49,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:53:49,199 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 18:53:49,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:53:49 BoogieIcfgContainer [2022-03-15 18:53:49,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:53:49,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:53:49,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:53:49,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:53:49,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:53:48" (1/3) ... [2022-03-15 18:53:49,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:53:49, skipping insertion in model container [2022-03-15 18:53:49,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:53:48" (2/3) ... [2022-03-15 18:53:49,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:53:49, skipping insertion in model container [2022-03-15 18:53:49,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:53:49" (3/3) ... [2022-03-15 18:53:49,216 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-03-15 18:53:49,219 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:53:49,220 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:53:49,220 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 18:53:49,220 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:53:49,257 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,264 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,265 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,265 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,272 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,272 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,272 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:53:49,276 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 18:53:49,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:53:49,324 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 18:53:49,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 18:53:49,335 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:53:49,345 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 104 transitions, 224 flow [2022-03-15 18:53:49,347 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 104 transitions, 224 flow [2022-03-15 18:53:49,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2022-03-15 18:53:49,383 INFO L129 PetriNetUnfolder]: 8/102 cut-off events. [2022-03-15 18:53:49,383 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 18:53:49,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-03-15 18:53:49,389 INFO L116 LiptonReduction]: Number of co-enabled transitions 728 [2022-03-15 18:53:51,829 INFO L131 LiptonReduction]: Checked pairs total: 887 [2022-03-15 18:53:51,829 INFO L133 LiptonReduction]: Total number of compositions: 108 [2022-03-15 18:53:51,835 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 16 transitions, 48 flow [2022-03-15 18:53:51,844 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 18:53:51,849 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:53:51,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:53:51,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:53:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:53:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash -211397574, now seen corresponding path program 1 times [2022-03-15 18:53:51,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:53:51,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347996999] [2022-03-15 18:53:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:51,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:53:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:52,005 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 18:53:52,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:53:52,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347996999] [2022-03-15 18:53:52,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347996999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:53:52,006 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:53:52,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 18:53:52,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2100118383] [2022-03-15 18:53:52,007 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:53:52,010 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:53:52,022 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2022-03-15 18:53:52,022 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:53:52,206 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:53:52,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:53:52,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:53:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:53:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:53:52,226 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:53:52,256 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2022-03-15 18:53:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:53:52,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-03-15 18:53:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:53:52,263 INFO L225 Difference]: With dead ends: 37 [2022-03-15 18:53:52,263 INFO L226 Difference]: Without dead ends: 32 [2022-03-15 18:53:52,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 8 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 18:53:52,266 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:53:52,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:53:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-15 18:53:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-15 18:53:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2022-03-15 18:53:52,288 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2022-03-15 18:53:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:53:52,289 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2022-03-15 18:53:52,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2022-03-15 18:53:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 18:53:52,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:53:52,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:53:52,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:53:52,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:53:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:53:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash -65188888, now seen corresponding path program 1 times [2022-03-15 18:53:52,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:53:52,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183136519] [2022-03-15 18:53:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:53:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:52,359 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 18:53:52,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:53:52,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183136519] [2022-03-15 18:53:52,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183136519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:53:52,360 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:53:52,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:53:52,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1646287175] [2022-03-15 18:53:52,360 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:53:52,361 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:53:52,364 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2022-03-15 18:53:52,364 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:53:52,499 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [255#(or (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 254#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296))] [2022-03-15 18:53:52,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 18:53:52,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:53:52,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 18:53:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 18:53:52,501 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:53:52,658 INFO L93 Difference]: Finished difference Result 48 states and 95 transitions. [2022-03-15 18:53:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 18:53:52,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-03-15 18:53:52,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:53:52,660 INFO L225 Difference]: With dead ends: 48 [2022-03-15 18:53:52,660 INFO L226 Difference]: Without dead ends: 46 [2022-03-15 18:53:52,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:53:52,661 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:53:52,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:53:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-15 18:53:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 26. [2022-03-15 18:53:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 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 18:53:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 54 transitions. [2022-03-15 18:53:52,664 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 54 transitions. Word has length 12 [2022-03-15 18:53:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:53:52,665 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 54 transitions. [2022-03-15 18:53:52,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 54 transitions. [2022-03-15 18:53:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 18:53:52,665 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:53:52,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:53:52,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:53:52,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:53:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:53:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1758471319, now seen corresponding path program 1 times [2022-03-15 18:53:52,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:53:52,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585701005] [2022-03-15 18:53:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:53:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:52,719 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 18:53:52,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:53:52,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585701005] [2022-03-15 18:53:52,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585701005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:53:52,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075548938] [2022-03-15 18:53:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:52,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:53:52,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:53:52,729 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 18:53:52,730 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 18:53:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:52,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 18:53:52,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:53:52,950 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 18:53:52,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:53:53,064 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 18:53:53,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075548938] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:53:53,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:53:53,065 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-03-15 18:53:53,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1896135676] [2022-03-15 18:53:53,065 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:53:53,066 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:53:53,068 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2022-03-15 18:53:53,068 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:53:53,546 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [435#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)), 436#(or (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (div (+ (* (- 1) ~i2~0) (- 2) (mod (* 2 ~N~0) 4294967296)) (- 4294967296)) (+ (div (+ ~i2~0 (- 4294967295)) 4294967296) 1)))] [2022-03-15 18:53:53,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 18:53:53,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:53:53,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 18:53:53,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:53:53,547 INFO L87 Difference]: Start difference. First operand 26 states and 54 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:53:53,794 INFO L93 Difference]: Finished difference Result 62 states and 128 transitions. [2022-03-15 18:53:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 18:53:53,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-03-15 18:53:53,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:53:53,795 INFO L225 Difference]: With dead ends: 62 [2022-03-15 18:53:53,795 INFO L226 Difference]: Without dead ends: 62 [2022-03-15 18:53:53,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-03-15 18:53:53,796 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:53:53,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:53:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-15 18:53:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2022-03-15 18:53:53,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 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 18:53:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 96 transitions. [2022-03-15 18:53:53,802 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 96 transitions. Word has length 12 [2022-03-15 18:53:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:53:53,802 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 96 transitions. [2022-03-15 18:53:53,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 96 transitions. [2022-03-15 18:53:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 18:53:53,803 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:53:53,803 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:53:53,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 18:53:54,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:53:54,017 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:53:54,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:53:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash -347609426, now seen corresponding path program 2 times [2022-03-15 18:53:54,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:53:54,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735466458] [2022-03-15 18:53:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:53:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:53:54,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:53:54,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735466458] [2022-03-15 18:53:54,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735466458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:53:54,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:53:54,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:53:54,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [645802973] [2022-03-15 18:53:54,090 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:53:54,091 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:53:54,093 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 52 transitions. [2022-03-15 18:53:54,093 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:53:54,329 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [595#(< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296)), 596#(or (<= ~N~0 (* (div (* 2 ~N~0) 4294967296) 2147483648)) (< (mod ~i1~0 4294967296) (mod (* 2 ~N~0) 4294967296)))] [2022-03-15 18:53:54,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 18:53:54,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:53:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 18:53:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-15 18:53:54,330 INFO L87 Difference]: Start difference. First operand 42 states and 96 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:53:54,437 INFO L93 Difference]: Finished difference Result 58 states and 125 transitions. [2022-03-15 18:53:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 18:53:54,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 18:53:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:53:54,438 INFO L225 Difference]: With dead ends: 58 [2022-03-15 18:53:54,438 INFO L226 Difference]: Without dead ends: 52 [2022-03-15 18:53:54,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:53:54,439 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:53:54,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:53:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-15 18:53:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-03-15 18:53:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 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 18:53:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2022-03-15 18:53:54,443 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 13 [2022-03-15 18:53:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:53:54,443 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2022-03-15 18:53:54,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2022-03-15 18:53:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:53:54,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:53:54,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:53:54,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 18:53:54,444 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:53:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:53:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash 681395772, now seen corresponding path program 1 times [2022-03-15 18:53:54,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:53:54,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37949125] [2022-03-15 18:53:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:54,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:53:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:53:54,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:53:54,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37949125] [2022-03-15 18:53:54,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37949125] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:53:54,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637942310] [2022-03-15 18:53:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:54,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:53:54,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:53:54,650 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 18:53:54,651 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 18:53:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:54,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:53:54,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:53:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:53:55,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:53:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:53:56,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637942310] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:53:56,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:53:56,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2022-03-15 18:53:56,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [668816295] [2022-03-15 18:53:56,088 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:53:56,089 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:53:56,092 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 66 transitions. [2022-03-15 18:53:56,093 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:53:57,244 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [861#(and (or (not (= (mod ~d1~0 256) 0)) (<= (div (+ (* (- 1) ~pos~0) 1) (- 4294967296)) (+ (div (+ ~pos~0 (- 4294967297)) 4294967296) 1))) (or (= (mod ~d1~0 256) 0) (<= (div (+ (- 1) (* (- 1) ~pos~0)) (- 4294967296)) (+ (div (+ ~pos~0 (- 4294967295)) 4294967296) 1)))), 860#(and (or (<= (div (+ (* (- 1) ~pos~0) 2) (- 4294967296)) (+ (div (+ ~pos~0 (- 4294967298)) 4294967296) 1)) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~d2~0 256) 0) (<= (div (+ (- 2) (* (- 1) ~pos~0)) (- 4294967296)) (+ (div (+ ~pos~0 (- 4294967294)) 4294967296) 1))))] [2022-03-15 18:53:57,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:53:57,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:53:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:53:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:53:57,245 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:53:57,401 INFO L93 Difference]: Finished difference Result 117 states and 261 transitions. [2022-03-15 18:53:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:53:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 18:53:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:53:57,403 INFO L225 Difference]: With dead ends: 117 [2022-03-15 18:53:57,403 INFO L226 Difference]: Without dead ends: 112 [2022-03-15 18:53:57,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:53:57,403 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:53:57,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:53:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-03-15 18:53:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2022-03-15 18:53:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 93 states have internal predecessors, (225), 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 18:53:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 225 transitions. [2022-03-15 18:53:57,409 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 225 transitions. Word has length 15 [2022-03-15 18:53:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:53:57,410 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 225 transitions. [2022-03-15 18:53:57,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:53:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 225 transitions. [2022-03-15 18:53:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:53:57,410 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:53:57,410 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:53:57,427 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 18:53:57,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:53:57,623 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:53:57,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:53:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1268431172, now seen corresponding path program 2 times [2022-03-15 18:53:57,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:53:57,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101521912] [2022-03-15 18:53:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:53:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:53:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:53:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:53:57,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:53:57,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101521912] [2022-03-15 18:53:57,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101521912] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:53:57,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998291054] [2022-03-15 18:53:57,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:53:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:53:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:53:57,938 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 18:53:57,939 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 18:53:58,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:53:58,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:53:58,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:53:58,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:53:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:53:58,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:53:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:53:59,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998291054] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:53:59,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:53:59,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2022-03-15 18:53:59,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1110205139] [2022-03-15 18:53:59,647 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:53:59,648 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:53:59,651 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2022-03-15 18:53:59,652 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:00,461 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1265#(and (or (<= (div (+ (* (- 1) ~pos~0) 2) (- 4294967296)) (+ (div (+ ~pos~0 (- 4294967298)) 4294967296) 1)) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~d2~0 256) 0) (<= (div (+ (- 2) (* (- 1) ~pos~0)) (- 4294967296)) (+ (div (+ ~pos~0 (- 4294967294)) 4294967296) 1))))] [2022-03-15 18:54:00,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:54:00,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:54:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:54:00,462 INFO L87 Difference]: Start difference. First operand 94 states and 225 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 18:54:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:00,666 INFO L93 Difference]: Finished difference Result 145 states and 338 transitions. [2022-03-15 18:54:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 18:54:00,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 18:54:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:00,668 INFO L225 Difference]: With dead ends: 145 [2022-03-15 18:54:00,668 INFO L226 Difference]: Without dead ends: 140 [2022-03-15 18:54:00,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:54:00,668 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:00,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-03-15 18:54:00,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2022-03-15 18:54:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 93 states have internal predecessors, (225), 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 18:54:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 225 transitions. [2022-03-15 18:54:00,676 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 225 transitions. Word has length 15 [2022-03-15 18:54:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:00,676 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 225 transitions. [2022-03-15 18:54:00,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 18:54:00,676 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 225 transitions. [2022-03-15 18:54:00,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 18:54:00,677 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:00,677 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:00,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:00,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:00,891 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -499971414, now seen corresponding path program 3 times [2022-03-15 18:54:00,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:00,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89070915] [2022-03-15 18:54:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:01,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:01,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89070915] [2022-03-15 18:54:01,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89070915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:01,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601675259] [2022-03-15 18:54:01,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:54:01,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:01,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:01,205 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 18:54:01,205 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 18:54:01,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:54:01,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:01,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 18:54:01,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:15,271 WARN L228 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 49 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 18:54:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:16,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:23,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601675259] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:23,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:23,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2022-03-15 18:54:23,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1364571686] [2022-03-15 18:54:23,566 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:23,567 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:23,572 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 73 transitions. [2022-03-15 18:54:23,572 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:57:52,770 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [1712#(or (<= (div (+ (* (- 1) ~i1~0) (- 3)) (- 4294967296)) (+ 3 (div (+ (- 8589934590) ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296))) 4294967296))) (<= (+ (div (+ (* 2 ~N~0) (* (- 1) ~i1~0) (- 12884901892) ~i2~0) (- 4294967296)) (* 2 (div (* 2 ~N~0) 4294967296))) (+ 6 (div (+ ~i1~0 (- 12884901888)) 4294967296) (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 4)) 4294967296))) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 1681#(or (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (div (+ (* (- 1) ~i2~0) (- 2) (mod (* 2 ~N~0) 4294967296)) (- 4294967296)) (+ (div (+ ~i2~0 (- 4294967295)) 4294967296) 1))), 1677#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)), 1710#(or (<= (+ (div (+ (* 2 ~N~0) (* (- 1) ~i1~0) ~i2~0 (- 4294967298)) (- 4294967296)) (* 2 (div (* 2 ~N~0) 4294967296))) (+ (div (+ ~i1~0 (- 4294967298)) 4294967296) 2 (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 4)) 4294967296))) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 1685#(or (<= (div (+ (* (- 1) ~i2~0) (mod (* 2 ~N~0) 4294967296) (- 4294967299)) (- 4294967296)) (+ (div (+ (- 8589934590) ~i2~0) 4294967296) 3)) (<= (div (+ (* (- 1) ~i2~0) (- 2)) (- 4294967296)) (+ (div (+ ~i2~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) 1) 4294967296) 1))), 1711#(or (<= (+ (div (+ (- 8589934595) (* 2 ~N~0) (* (- 1) ~i1~0) ~i2~0) (- 4294967296)) (* 2 (div (* 2 ~N~0) 4294967296))) (+ 4 (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 4)) 4294967296) (div (+ (- 8589934593) ~i1~0) 4294967296))) (<= (div (+ (* (- 1) ~i1~0) 4294967294) (- 4294967296)) (+ (div (+ ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) (- 4294967295)) 4294967296) 1)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296)))] [2022-03-15 18:57:52,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:57:52,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:57:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:57:52,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=458, Unknown=7, NotChecked=0, Total=552 [2022-03-15 18:57:52,771 INFO L87 Difference]: Start difference. First operand 94 states and 225 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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 18:58:24,912 WARN L228 SmtUtils]: Spent 27.16s on a formula simplification. DAG size of input: 76 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 18:58:27,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 18:58:29,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 18:58:37,000 WARN L534 Checker$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 18:58:39,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 18:58:40,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 18:59:34,406 WARN L228 SmtUtils]: Spent 46.40s on a formula simplification. DAG size of input: 99 DAG size of output: 89 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 18:59:35,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 18:59:37,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 18:59:47,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:01:06,420 WARN L228 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 122 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:01:09,052 WARN L534 Checker$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 19:01:14,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:01:16,521 WARN L534 Checker$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 19:01:18,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 19:01:41,129 WARN L228 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 83 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:01:44,630 WARN L534 Checker$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 19:02:11,707 WARN L228 SmtUtils]: Spent 15.04s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:02:16,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:03:26,097 WARN L228 SmtUtils]: Spent 55.09s on a formula simplification. DAG size of input: 122 DAG size of output: 99 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:03:28,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 19:03:30,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:03:32,231 WARN L534 Checker$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 19:03:34,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:03:35,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:03:38,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:03:44,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:04:34,263 WARN L228 SmtUtils]: Spent 24.20s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:04:37,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:04:41,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 19:04:43,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:04:47,288 WARN L534 Checker$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 19:04:49,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:04:51,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:04:54,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:04:56,622 WARN L534 Checker$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 19:04:58,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 19:05:28,166 WARN L228 SmtUtils]: Spent 23.75s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:05:30,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-15 19:05:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:05:33,017 INFO L93 Difference]: Finished difference Result 222 states and 515 transitions. [2022-03-15 19:05:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 19:05:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 19:05:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:05:33,019 INFO L225 Difference]: With dead ends: 222 [2022-03-15 19:05:33,019 INFO L226 Difference]: Without dead ends: 222 [2022-03-15 19:05:33,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 405.1s TimeCoverageRelationStatistics Valid=285, Invalid=1397, Unknown=40, NotChecked=0, Total=1722 [2022-03-15 19:05:33,020 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 35 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:05:33,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 643 Invalid, 24 Unknown, 0 Unchecked, 86.7s Time] [2022-03-15 19:05:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-03-15 19:05:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 140. [2022-03-15 19:05:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.568345323741007) internal successors, (357), 139 states have internal predecessors, (357), 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 19:05:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 357 transitions. [2022-03-15 19:05:33,036 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 357 transitions. Word has length 16 [2022-03-15 19:05:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:05:33,036 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 357 transitions. [2022-03-15 19:05:33,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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 19:05:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 357 transitions. [2022-03-15 19:05:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:05:33,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:05:33,037 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:05:33,051 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 19:05:33,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:33,240 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:05:33,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:05:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1845168938, now seen corresponding path program 4 times [2022-03-15 19:05:33,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:05:33,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289342574] [2022-03-15 19:05:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:05:33,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:05:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:05:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:33,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:05:33,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289342574] [2022-03-15 19:05:33,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289342574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:05:33,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092241148] [2022-03-15 19:05:33,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:05:33,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:33,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:05:33,416 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 19:05:33,417 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 19:05:33,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:05:33,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:05:33,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:05:33,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:05:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:34,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:05:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:39,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092241148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:05:39,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:05:39,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-03-15 19:05:39,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1228607840] [2022-03-15 19:05:39,534 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:05:39,536 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:05:39,541 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 56 transitions. [2022-03-15 19:05:39,541 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:05:43,021 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2329#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)), 2333#(or (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (div (+ (* (- 1) ~i2~0) (- 2) (mod (* 2 ~N~0) 4294967296)) (- 4294967296)) (+ (div (+ ~i2~0 (- 4294967295)) 4294967296) 1)))] [2022-03-15 19:05:43,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:05:43,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:05:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:05:43,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=279, Unknown=1, NotChecked=0, Total=380 [2022-03-15 19:05:43,022 INFO L87 Difference]: Start difference. First operand 140 states and 357 transitions. Second operand has 10 states, 10 states have (on average 3.4) 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 19:05:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:05:55,367 INFO L93 Difference]: Finished difference Result 300 states and 688 transitions. [2022-03-15 19:05:55,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 19:05:55,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) 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 16 [2022-03-15 19:05:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:05:55,368 INFO L225 Difference]: With dead ends: 300 [2022-03-15 19:05:55,368 INFO L226 Difference]: Without dead ends: 300 [2022-03-15 19:05:55,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=212, Invalid=597, Unknown=3, NotChecked=0, Total=812 [2022-03-15 19:05:55,369 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:05:55,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 19:05:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-03-15 19:05:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 152. [2022-03-15 19:05:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.642384105960265) internal successors, (399), 151 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 19:05:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 399 transitions. [2022-03-15 19:05:55,376 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 399 transitions. Word has length 16 [2022-03-15 19:05:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:05:55,376 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 399 transitions. [2022-03-15 19:05:55,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) 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 19:05:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 399 transitions. [2022-03-15 19:05:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:05:55,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:05:55,377 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:05:55,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-15 19:05:55,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:55,588 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:05:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:05:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash 986294408, now seen corresponding path program 5 times [2022-03-15 19:05:55,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:05:55,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124975138] [2022-03-15 19:05:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:05:55,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:05:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:05:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:55,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:05:55,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124975138] [2022-03-15 19:05:55,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124975138] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:05:55,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914668571] [2022-03-15 19:05:55,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:05:55,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:05:55,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:05:55,730 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 19:05:55,734 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 19:05:55,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:05:55,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:05:55,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:05:55,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:05:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:05:56,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:00,472 WARN L838 $PredicateComparison]: unable to prove that (forall ((aux_div_aux_mod_aux_mod_aux_mod_v_~i1~0_118_89_138_130_178 Int) (~N~0 Int) (aux_div_v_~i1~0_118_89 Int)) (let ((.cse0 (mod (* 2 ~N~0) 4294967296))) (or (<= .cse0 (mod c_~i1~0 4294967296)) (<= (div (+ (* c_~i1~0 (- 1)) (- 4294967299)) (- 4294967296)) (+ aux_div_aux_mod_aux_mod_aux_mod_v_~i1~0_118_89_138_130_178 2)) (<= aux_div_v_~i1~0_118_89 (+ (div (+ c_~i1~0 (- 12884901885)) 4294967296) 4)) (<= .cse0 (mod c_~i2~0 4294967296)) (<= (+ c_~i1~0 8589934596) (+ .cse0 (* 4294967296 aux_div_v_~i1~0_118_89))) (<= (div (+ (- 2) (* (- 1) c_~i2~0)) (- 4294967296)) (+ (div (+ (* (- 1) .cse0) c_~i2~0 1) 4294967296) 1)) (<= (+ (* aux_div_aux_mod_aux_mod_aux_mod_v_~i1~0_118_89_138_130_178 4294967296) 4294967294 .cse0) c_~i1~0)))) is different from false [2022-03-15 19:06:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-03-15 19:06:01,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914668571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:01,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:01,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-03-15 19:06:01,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [95633751] [2022-03-15 19:06:01,195 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:01,197 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:01,200 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 52 transitions. [2022-03-15 19:06:01,200 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:03,190 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [3096#(or (<= (div (+ (* (- 1) ~i1~0) 4294967294) (- 4294967296)) (+ (div (+ ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) (- 4294967295)) 4294967296) 1)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296)) (<= (div (+ (* (- 1) ~i1~0) (- 4294967299)) (- 4294967296)) (+ 4 (div (+ (- 8589934592) (* (- 1) ~i2~0) ~i1~0) 4294967296) (* (div ~i2~0 4294967296) 2)))), 3094#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)), 3095#(or (<= (div (+ (- 2) (* (- 1) ~i1~0)) (- 4294967296)) (+ (div (+ (* (- 1) ~i2~0) ~i1~0 (- 4294967297)) 4294967296) 2 (* (div ~i2~0 4294967296) 2))) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296)))] [2022-03-15 19:06:03,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:06:03,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:06:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=373, Unknown=1, NotChecked=40, Total=506 [2022-03-15 19:06:03,191 INFO L87 Difference]: Start difference. First operand 152 states and 399 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 19:06:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:06,974 INFO L93 Difference]: Finished difference Result 416 states and 1033 transitions. [2022-03-15 19:06:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 19:06:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 16 [2022-03-15 19:06:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:06,976 INFO L225 Difference]: With dead ends: 416 [2022-03-15 19:06:06,976 INFO L226 Difference]: Without dead ends: 410 [2022-03-15 19:06:06,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=263, Invalid=1000, Unknown=1, NotChecked=68, Total=1332 [2022-03-15 19:06:06,977 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:06,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 19:06:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-03-15 19:06:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 194. [2022-03-15 19:06:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.849740932642487) internal successors, (550), 193 states have internal predecessors, (550), 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 19:06:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 550 transitions. [2022-03-15 19:06:06,985 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 550 transitions. Word has length 16 [2022-03-15 19:06:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:06,985 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 550 transitions. [2022-03-15 19:06:06,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 19:06:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 550 transitions. [2022-03-15 19:06:06,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:06:06,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:06,986 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:06,990 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 19:06:07,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:07,195 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:06:07,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash -706988023, now seen corresponding path program 6 times [2022-03-15 19:06:07,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:07,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264680004] [2022-03-15 19:06:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:07,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:07,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:07,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264680004] [2022-03-15 19:06:07,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264680004] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:07,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213000832] [2022-03-15 19:06:07,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:06:07,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:07,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:07,406 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 19:06:07,407 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 19:06:07,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 19:06:07,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:06:07,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:06:07,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:08,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:12,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213000832] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:12,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:12,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-03-15 19:06:12,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1968398535] [2022-03-15 19:06:12,081 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:12,082 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:12,086 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 78 transitions. [2022-03-15 19:06:12,086 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:16,860 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4044#(or (<= (+ (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 8589934596)) (- 4294967296)) (div (* 2 ~N~0) 4294967296)) (+ (div (+ ~i2~0 (- 12884901885)) 4294967296) 5)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (div (+ (* (- 1) ~i2~0) (- 4294967299)) (- 4294967296)) (+ 3 (div (+ ~i2~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) (- 4294967294)) 4294967296)))), 4042#(or (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (+ (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 2)) (- 4294967296)) (div (* 2 ~N~0) 4294967296)) (+ (div (+ ~i2~0 (- 4294967295)) 4294967296) 1))), 4043#(or (<= (+ (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 4294967299)) (- 4294967296)) (div (* 2 ~N~0) 4294967296)) (+ (div (+ (- 8589934590) ~i2~0) 4294967296) 3)) (<= (div (+ (* (- 1) ~i2~0) (- 2)) (- 4294967296)) (+ (div (+ ~i2~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) 1) 4294967296) 1))), 4045#(or (<= (mod (* 2 ~N~0) 4294967296) 0) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)))] [2022-03-15 19:06:16,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:06:16,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:06:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=397, Unknown=1, NotChecked=0, Total=506 [2022-03-15 19:06:16,861 INFO L87 Difference]: Start difference. First operand 194 states and 550 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:27,813 INFO L93 Difference]: Finished difference Result 294 states and 819 transitions. [2022-03-15 19:06:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 19:06:27,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 19:06:27,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:27,816 INFO L225 Difference]: With dead ends: 294 [2022-03-15 19:06:27,816 INFO L226 Difference]: Without dead ends: 294 [2022-03-15 19:06:27,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=129, Invalid=520, Unknown=1, NotChecked=0, Total=650 [2022-03-15 19:06:27,816 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:27,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 19:06:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-03-15 19:06:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 218. [2022-03-15 19:06:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.8433179723502304) internal successors, (617), 217 states have internal predecessors, (617), 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 19:06:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 617 transitions. [2022-03-15 19:06:27,823 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 617 transitions. Word has length 16 [2022-03-15 19:06:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:27,823 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 617 transitions. [2022-03-15 19:06:27,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 617 transitions. [2022-03-15 19:06:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:06:27,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:27,824 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:27,829 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 19:06:28,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:28,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:06:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:28,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1530075818, now seen corresponding path program 7 times [2022-03-15 19:06:28,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:28,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689484497] [2022-03-15 19:06:28,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:28,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:06:28,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:28,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689484497] [2022-03-15 19:06:28,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689484497] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:28,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601236147] [2022-03-15 19:06:28,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:06:28,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:28,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:28,127 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 19:06:28,128 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 19:06:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:28,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:06:28,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:29,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:38,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601236147] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:38,172 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:38,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-03-15 19:06:38,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1364248384] [2022-03-15 19:06:38,173 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:38,174 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:38,177 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 52 transitions. [2022-03-15 19:06:38,177 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:39,437 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4860#(or (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (+ (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 2)) (- 4294967296)) (div (* 2 ~N~0) 4294967296)) (+ (div (+ ~i2~0 (- 4294967295)) 4294967296) 1))), 4889#(or (<= (div (+ (* (- 1) ~i1~0) ~i2~0 (- 4294967296)) (- 4294967296)) (+ (div (+ (* (- 1) ~i2~0) ~i1~0) 4294967296) 1)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296)))] [2022-03-15 19:06:39,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:06:39,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:06:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=221, Unknown=2, NotChecked=0, Total=306 [2022-03-15 19:06:39,438 INFO L87 Difference]: Start difference. First operand 218 states and 617 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:44,440 INFO L93 Difference]: Finished difference Result 448 states and 1115 transitions. [2022-03-15 19:06:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 19:06:44,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 19:06:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:44,442 INFO L225 Difference]: With dead ends: 448 [2022-03-15 19:06:44,442 INFO L226 Difference]: Without dead ends: 448 [2022-03-15 19:06:44,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=171, Invalid=528, Unknown=3, NotChecked=0, Total=702 [2022-03-15 19:06:44,443 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:44,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:06:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-03-15 19:06:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 230. [2022-03-15 19:06:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.8777292576419216) internal successors, (659), 229 states have internal predecessors, (659), 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 19:06:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 659 transitions. [2022-03-15 19:06:44,449 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 659 transitions. Word has length 16 [2022-03-15 19:06:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:44,449 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 659 transitions. [2022-03-15 19:06:44,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:06:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 659 transitions. [2022-03-15 19:06:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:06:44,450 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:44,450 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:44,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 19:06:44,654 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,SelfDestructingSolverStorable10 [2022-03-15 19:06:44,655 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:06:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash -184105366, now seen corresponding path program 8 times [2022-03-15 19:06:44,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:44,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403164445] [2022-03-15 19:06:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:44,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:44,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:44,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403164445] [2022-03-15 19:06:44,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403164445] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:44,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627763885] [2022-03-15 19:06:44,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:06:44,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:44,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:44,772 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 19:06:44,773 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 19:06:44,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:06:44,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:06:44,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 19:06:44,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:06:45,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:06:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:06:46,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627763885] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:06:46,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:06:46,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2022-03-15 19:06:46,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1572637369] [2022-03-15 19:06:46,823 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:06:46,824 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:06:46,827 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 53 transitions. [2022-03-15 19:06:46,827 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:06:47,463 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [5923#(or (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 5924#(or (<= (div (+ (* (- 2) ~N~0) (* (- 1) ~i1~0) 4294967294 ~i2~0) (- 4294967296)) (+ (div (+ (* (- 1) ~i2~0) ~i1~0 (- 4294967296)) 4294967296) (div (* 2 ~N~0) 4294967296) 1)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 5922#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296))] [2022-03-15 19:06:47,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:06:47,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:06:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:06:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:06:47,464 INFO L87 Difference]: Start difference. First operand 230 states and 659 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 19:06:51,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:06:51,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:06:51,787 INFO L93 Difference]: Finished difference Result 404 states and 1046 transitions. [2022-03-15 19:06:51,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 19:06:51,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 16 [2022-03-15 19:06:51,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:06:51,789 INFO L225 Difference]: With dead ends: 404 [2022-03-15 19:06:51,790 INFO L226 Difference]: Without dead ends: 400 [2022-03-15 19:06:51,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:06:51,790 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:06:51,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-03-15 19:06:51,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-03-15 19:06:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 248. [2022-03-15 19:06:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.931174089068826) internal successors, (724), 247 states have internal predecessors, (724), 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 19:06:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 724 transitions. [2022-03-15 19:06:51,796 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 724 transitions. Word has length 16 [2022-03-15 19:06:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:06:51,796 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 724 transitions. [2022-03-15 19:06:51,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 19:06:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 724 transitions. [2022-03-15 19:06:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:06:51,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:06:51,797 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:06:51,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-15 19:06:52,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:52,003 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:06:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:06:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash 352123690, now seen corresponding path program 9 times [2022-03-15 19:06:52,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:06:52,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926919334] [2022-03-15 19:06:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:06:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:06:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:06:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:52,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:06:52,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926919334] [2022-03-15 19:06:52,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926919334] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:06:52,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196621916] [2022-03-15 19:06:52,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:06:52,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:06:52,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:06:52,097 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 19:06:52,098 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 19:06:52,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:06:52,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:06:52,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:06:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:06:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:06:53,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:07:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:00,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196621916] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:07:00,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:07:00,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2022-03-15 19:07:00,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [551329216] [2022-03-15 19:07:00,967 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:07:00,969 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:07:00,972 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2022-03-15 19:07:00,972 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:07:01,556 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6920#(or (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (+ (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (- 2)) (- 4294967296)) (div (* 2 ~N~0) 4294967296)) (+ (div (+ ~i2~0 (- 4294967295)) 4294967296) 1)))] [2022-03-15 19:07:01,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:07:01,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:07:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:07:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=221, Unknown=2, NotChecked=0, Total=306 [2022-03-15 19:07:01,557 INFO L87 Difference]: Start difference. First operand 248 states and 724 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:07:08,985 INFO L93 Difference]: Finished difference Result 592 states and 1527 transitions. [2022-03-15 19:07:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:07:08,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 19:07:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:07:08,988 INFO L225 Difference]: With dead ends: 592 [2022-03-15 19:07:08,988 INFO L226 Difference]: Without dead ends: 592 [2022-03-15 19:07:08,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=142, Invalid=454, Unknown=4, NotChecked=0, Total=600 [2022-03-15 19:07:08,999 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:07:08,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 19:07:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-03-15 19:07:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 288. [2022-03-15 19:07:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 3.010452961672474) internal successors, (864), 287 states have internal predecessors, (864), 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 19:07:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 864 transitions. [2022-03-15 19:07:09,013 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 864 transitions. Word has length 16 [2022-03-15 19:07:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:07:09,013 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 864 transitions. [2022-03-15 19:07:09,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 864 transitions. [2022-03-15 19:07:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:07:09,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:07:09,014 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:07:09,020 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 19:07:09,219 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,SelfDestructingSolverStorable12 [2022-03-15 19:07:09,219 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:07:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:07:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2106759992, now seen corresponding path program 10 times [2022-03-15 19:07:09,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:07:09,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841019153] [2022-03-15 19:07:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:07:09,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:07:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:07:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:09,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:07:09,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841019153] [2022-03-15 19:07:09,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841019153] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:07:09,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024508541] [2022-03-15 19:07:09,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:07:09,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:07:09,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:07:09,372 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 19:07:09,373 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 19:07:09,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:07:09,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:07:09,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:07:09,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:07:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:10,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:07:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:14,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024508541] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:07:14,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:07:14,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-03-15 19:07:14,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1360898457] [2022-03-15 19:07:14,277 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:07:14,278 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:07:14,281 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2022-03-15 19:07:14,281 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:07:20,769 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [8242#(or (<= ~i1~0 (+ (* (div (+ (* (- 2) ~N~0) ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) 4294967296) 4294967296) 4294967293)) (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296))), 8240#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)), 8241#(or (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296)))] [2022-03-15 19:07:20,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:07:20,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:07:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:07:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-15 19:07:20,770 INFO L87 Difference]: Start difference. First operand 288 states and 864 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 19:07:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:07:23,669 INFO L93 Difference]: Finished difference Result 312 states and 904 transitions. [2022-03-15 19:07:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 19:07:23,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 16 [2022-03-15 19:07:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:07:23,671 INFO L225 Difference]: With dead ends: 312 [2022-03-15 19:07:23,671 INFO L226 Difference]: Without dead ends: 306 [2022-03-15 19:07:23,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=140, Invalid=509, Unknown=1, NotChecked=0, Total=650 [2022-03-15 19:07:23,672 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:07:23,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:07:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-03-15 19:07:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 284. [2022-03-15 19:07:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.9752650176678443) internal successors, (842), 283 states have internal predecessors, (842), 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 19:07:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 842 transitions. [2022-03-15 19:07:23,677 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 842 transitions. Word has length 16 [2022-03-15 19:07:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:07:23,678 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 842 transitions. [2022-03-15 19:07:23,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 19:07:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 842 transitions. [2022-03-15 19:07:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:07:23,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:07:23,678 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:07:23,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 19:07:23,882 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,SelfDestructingSolverStorable13 [2022-03-15 19:07:23,883 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:07:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:07:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash 109851882, now seen corresponding path program 11 times [2022-03-15 19:07:23,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:07:23,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554073540] [2022-03-15 19:07:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:07:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:07:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:07:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:24,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:07:24,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554073540] [2022-03-15 19:07:24,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554073540] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:07:24,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002126840] [2022-03-15 19:07:24,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:07:24,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:07:24,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:07:24,096 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 19:07:24,097 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 19:07:24,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:07:24,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:07:24,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:07:24,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:07:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:25,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:07:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:07:36,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002126840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:07:36,071 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:07:36,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 25 [2022-03-15 19:07:36,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2051909502] [2022-03-15 19:07:36,071 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:07:36,072 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:07:36,078 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 87 transitions. [2022-03-15 19:07:36,078 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:07:48,195 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [9260#(or (<= (mod (* 2 ~N~0) 4294967296) (mod ~i2~0 4294967296)) (<= (div (+ (* (- 1) ~i2~0) (- 2) (mod (* 2 ~N~0) 4294967296)) (- 4294967296)) (+ (div (+ ~i2~0 (- 4294967295)) 4294967296) 1))), 9265#(or (<= (div (+ (- 8589934596) (* (- 1) ~i1~0)) (- 4294967296)) (+ 5 (div (+ ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) (- 8589934589)) 4294967296))) (<= (* (div ~i2~0 4294967296) 4294967296) (+ (* 4294967296 (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (* (- 4294967296) (div (* 2 ~N~0) 4294967296)) (* (div ~i2~0 4294967296) 4294967296) (- 4)) 4294967296)) ~i2~0)) (<= (div (+ (- 2) (* (- 1) ~i1~0)) (- 4294967296)) (+ (div (+ ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) 1) 4294967296) 1)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 9266#(or (<= (div (+ (- 12884901893) (* (- 1) ~i1~0)) (- 4294967296)) (+ (div (+ (- 12884901884) ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296))) 4294967296) 7)) (<= (* (div ~i2~0 4294967296) 4294967296) (+ (* 4294967296 (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (* (- 4294967296) (div (* 2 ~N~0) 4294967296)) (* (div ~i2~0 4294967296) 4294967296) (- 4)) 4294967296)) ~i2~0)) (<= (div (+ (* (- 1) ~i1~0) (- 4294967299)) (- 4294967296)) (+ 3 (div (+ ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) (- 4294967294)) 4294967296))) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 9263#(or (<= (* (div ~i2~0 4294967296) 4294967296) (+ (* 4294967296 (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (* (- 4294967296) (div (* 2 ~N~0) 4294967296)) (* (div ~i2~0 4294967296) 4294967296) (- 4)) 4294967296)) ~i2~0)) (<= (div (+ (- 2) (* (- 1) ~i1~0)) (- 4294967296)) (+ (div (+ ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) 1) 4294967296) 1)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 9261#(or (<= (div (+ (* (- 1) ~i2~0) (mod (* 2 ~N~0) 4294967296) (- 4294967299)) (- 4294967296)) (+ (div (+ (- 8589934590) ~i2~0) 4294967296) 3)) (<= (div (+ (* (- 1) ~i2~0) (- 2)) (- 4294967296)) (+ (div (+ ~i2~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) 1) 4294967296) 1))), 9259#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)), 9262#(or (<= (* (div ~i2~0 4294967296) 4294967296) (+ (* 4294967296 (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (* (- 4294967296) (div (* 2 ~N~0) 4294967296)) (* (div ~i2~0 4294967296) 4294967296) (- 4)) 4294967296)) ~i2~0)) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296))), 9264#(or (<= (* (div ~i2~0 4294967296) 4294967296) (+ (* 4294967296 (div (+ (* 2 ~N~0) (* (- 1) ~i2~0) (* (- 4294967296) (div (* 2 ~N~0) 4294967296)) (* (div ~i2~0 4294967296) 4294967296) (- 4)) 4294967296)) ~i2~0)) (<= (div (+ (* (- 1) ~i1~0) (- 4294967299)) (- 4294967296)) (+ 3 (div (+ ~i1~0 (* (- 1) (mod (* 2 ~N~0) 4294967296)) (- 4294967294)) 4294967296))) (<= (mod (* 2 ~N~0) 4294967296) (mod ~i1~0 4294967296)))] [2022-03-15 19:07:48,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 19:07:48,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:07:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 19:07:48,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=809, Unknown=1, NotChecked=0, Total=1122 [2022-03-15 19:07:48,196 INFO L87 Difference]: Start difference. First operand 284 states and 842 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:07:55,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-15 19:08:01,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-03-15 19:08:23,194 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 19:08:23,210 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 19:08:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 19:08:23,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=768, Invalid=1881, Unknown=3, NotChecked=0, Total=2652 [2022-03-15 19:08:23,701 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 128 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-03-15 19:08:23,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 0 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 434 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-03-15 19:08:23,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 19:08:23,709 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 19:08:23,903 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,SelfDestructingSolverStorable14 [2022-03-15 19:08:23,903 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (284states) and FLOYD_HOARE automaton (currently 27 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 52 known predicates. [2022-03-15 19:08:23,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 19:08:23,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 19:08:23,906 INFO L732 BasicCegarLoop]: Path program histogram: [11, 2, 1, 1] [2022-03-15 19:08:23,907 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 19:08:23,907 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 19:08:23,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 07:08:23 BasicIcfg [2022-03-15 19:08:23,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 19:08:23,909 INFO L158 Benchmark]: Toolchain (without parser) took 875268.58ms. Allocated memory was 169.9MB in the beginning and 414.2MB in the end (delta: 244.3MB). Free memory was 114.0MB in the beginning and 231.5MB in the end (delta: -117.5MB). Peak memory consumption was 128.2MB. Max. memory is 8.0GB. [2022-03-15 19:08:23,909 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 19:08:23,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.62ms. Allocated memory was 169.9MB in the beginning and 287.3MB in the end (delta: 117.4MB). Free memory was 113.9MB in the beginning and 259.4MB in the end (delta: -145.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-03-15 19:08:23,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.49ms. Allocated memory is still 287.3MB. Free memory was 259.4MB in the beginning and 257.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 19:08:23,910 INFO L158 Benchmark]: Boogie Preprocessor took 17.11ms. Allocated memory is still 287.3MB. Free memory was 257.8MB in the beginning and 256.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 19:08:23,910 INFO L158 Benchmark]: RCFGBuilder took 269.57ms. Allocated memory is still 287.3MB. Free memory was 256.8MB in the beginning and 242.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-15 19:08:23,910 INFO L158 Benchmark]: TraceAbstraction took 874697.21ms. Allocated memory was 287.3MB in the beginning and 414.2MB in the end (delta: 126.9MB). Free memory was 241.6MB in the beginning and 231.5MB in the end (delta: 10.1MB). Peak memory consumption was 138.0MB. Max. memory is 8.0GB. [2022-03-15 19:08:23,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.62ms. Allocated memory was 169.9MB in the beginning and 287.3MB in the end (delta: 117.4MB). Free memory was 113.9MB in the beginning and 259.4MB in the end (delta: -145.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.49ms. Allocated memory is still 287.3MB. Free memory was 259.4MB in the beginning and 257.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.11ms. Allocated memory is still 287.3MB. Free memory was 257.8MB in the beginning and 256.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 269.57ms. Allocated memory is still 287.3MB. Free memory was 256.8MB in the beginning and 242.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 874697.21ms. Allocated memory was 287.3MB in the beginning and 414.2MB in the end (delta: 126.9MB). Free memory was 241.6MB in the beginning and 231.5MB in the end (delta: 10.1MB). Peak memory consumption was 138.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 103 PlacesBefore, 21 PlacesAfterwards, 104 TransitionsBefore, 16 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 6 FixpointIterations, 60 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 108 TotalNumberOfCompositions, 887 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 831, positive: 821, positive conditional: 0, positive unconditional: 821, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 448, positive: 439, positive conditional: 0, positive unconditional: 439, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 831, positive: 382, positive conditional: 0, positive unconditional: 382, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 448, unknown conditional: 0, unknown unconditional: 448] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (284states) and FLOYD_HOARE automaton (currently 27 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 52 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (284states) and FLOYD_HOARE automaton (currently 27 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 52 known predicates. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (284states) and FLOYD_HOARE automaton (currently 27 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 52 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 874.6s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 543.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 25 mSolverCounterUnknown, 697 SdHoareTripleChecker+Valid, 113.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 697 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 112.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1474 mSDsCounter, 239 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3409 IncrementalHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 239 mSolverCounterUnsat, 0 mSDtfsCounter, 3409 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 825 GetRequests, 460 SyntacticMatches, 40 SemanticMatches, 324 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 504.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=13, InterpolantAutomatonStates: 160, 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, 14 MinimizatonAttempts, 1322 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 80.3s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 561 ConstructedInterpolants, 55 QuantifiedInterpolants, 16159 SizeOfPredicates, 168 NumberOfNonLiveVariables, 1292 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 94/313 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