/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-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:54:15,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:54:15,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:54:15,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:54:15,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:54:15,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:54:15,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:54:15,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:54:15,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:54:15,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:54:15,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:54:15,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:54:15,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:54:15,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:54:15,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:54:15,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:54:15,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:54:15,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:54:15,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:54:15,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:54:15,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:54:15,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:54:15,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:54:15,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:54:15,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 18:54:15,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:54:15,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:54:15,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:54:15,486 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 18:54:15,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:54:15,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:54:15,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:54:15,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:54:15,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:54:15,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:54:15,510 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:54:15,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:54:15,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:54:15,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:54:15,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:54:15,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:54:15,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:54:15,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:54:15,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:54:15,511 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:54:15,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:54:15,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:54:15,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:54:15,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:54:15,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:54:15,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:54:15,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:54:15,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:54:15,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:54:15,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:54:15,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:54:15,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:54:15,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:54:15,514 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:54:15,514 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:54:15,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:54:15,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:54:15,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:54:15,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:54:15,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:54:15,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:54:15,698 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:54:15,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-03-15 18:54:15,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ac58657/8bb1b30a34c641419b58bb849ee6614f/FLAGa8732976b [2022-03-15 18:54:16,061 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:54:16,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-03-15 18:54:16,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ac58657/8bb1b30a34c641419b58bb849ee6614f/FLAGa8732976b [2022-03-15 18:54:16,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26ac58657/8bb1b30a34c641419b58bb849ee6614f [2022-03-15 18:54:16,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:54:16,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:54:16,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:54:16,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:54:16,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:54:16,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@384cb256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16, skipping insertion in model container [2022-03-15 18:54:16,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:54:16,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:54:16,681 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-3.wvr.c[2410,2423] [2022-03-15 18:54:16,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:54:16,689 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:54:16,718 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-3.wvr.c[2410,2423] [2022-03-15 18:54:16,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:54:16,727 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:54:16,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16 WrapperNode [2022-03-15 18:54:16,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:54:16,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:54:16,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:54:16,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:54:16,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,767 INFO L137 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-03-15 18:54:16,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:54:16,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:54:16,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:54:16,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:54:16,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:54:16,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:54:16,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:54:16,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:54:16,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (1/1) ... [2022-03-15 18:54:16,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:54:16,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:16,818 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 18:54:16,825 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 18:54:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:54:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 18:54:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 18:54:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 18:54:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 18:54:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:54:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:54:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:54:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 18:54:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 18:54:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:54:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:54:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 18:54:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:54:16,851 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 18:54:16,944 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:54:16,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:54:17,110 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:54:17,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:54:17,125 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 18:54:17,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:54:17 BoogieIcfgContainer [2022-03-15 18:54:17,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:54:17,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:54:17,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:54:17,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:54:17,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:54:16" (1/3) ... [2022-03-15 18:54:17,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b8eb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:54:17, skipping insertion in model container [2022-03-15 18:54:17,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:16" (2/3) ... [2022-03-15 18:54:17,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b8eb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:54:17, skipping insertion in model container [2022-03-15 18:54:17,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:54:17" (3/3) ... [2022-03-15 18:54:17,135 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-03-15 18:54:17,140 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:54:17,140 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:54:17,140 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 18:54:17,140 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:54:17,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,194 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,195 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,195 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,196 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,196 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,196 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,196 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,196 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:17,213 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 18:54:17,253 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:54:17,260 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 18:54:17,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 18:54:17,271 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:54:17,276 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 95 transitions, 206 flow [2022-03-15 18:54:17,278 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 95 transitions, 206 flow [2022-03-15 18:54:17,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 206 flow [2022-03-15 18:54:17,322 INFO L129 PetriNetUnfolder]: 11/93 cut-off events. [2022-03-15 18:54:17,322 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 18:54:17,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-03-15 18:54:17,328 INFO L116 LiptonReduction]: Number of co-enabled transitions 1088 [2022-03-15 18:54:19,666 INFO L131 LiptonReduction]: Checked pairs total: 1090 [2022-03-15 18:54:19,666 INFO L133 LiptonReduction]: Total number of compositions: 93 [2022-03-15 18:54:19,672 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 16 transitions, 48 flow [2022-03-15 18:54:19,680 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 18:54:19,682 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 18:54:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 18:54:19,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:19,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:19,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -172067890, now seen corresponding path program 1 times [2022-03-15 18:54:19,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:19,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98830920] [2022-03-15 18:54:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:19,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:19,838 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 18:54:19,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:19,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98830920] [2022-03-15 18:54:19,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98830920] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:54:19,840 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:54:19,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:54:19,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1452674387] [2022-03-15 18:54:19,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:19,846 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:19,860 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2022-03-15 18:54:19,861 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:20,013 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [137#(not (= (mod ~g1~0 256) 0))] [2022-03-15 18:54:20,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 18:54:20,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:20,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 18:54:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 18:54:20,033 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 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 18:54:20,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:20,070 INFO L93 Difference]: Finished difference Result 26 states and 54 transitions. [2022-03-15 18:54:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:54:20,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 18:54:20,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:20,077 INFO L225 Difference]: With dead ends: 26 [2022-03-15 18:54:20,077 INFO L226 Difference]: Without dead ends: 26 [2022-03-15 18:54:20,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 18:54:20,082 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:20,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:54:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-15 18:54:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-03-15 18:54:20,116 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 18:54:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 54 transitions. [2022-03-15 18:54:20,117 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 54 transitions. Word has length 11 [2022-03-15 18:54:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:20,118 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 54 transitions. [2022-03-15 18:54:20,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 18:54:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 54 transitions. [2022-03-15 18:54:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 18:54:20,119 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:20,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:20,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:54:20,119 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -300367617, now seen corresponding path program 1 times [2022-03-15 18:54:20,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:20,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840848006] [2022-03-15 18:54:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:20,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:20,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840848006] [2022-03-15 18:54:20,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840848006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:54:20,174 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:54:20,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:54:20,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618368766] [2022-03-15 18:54:20,174 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:20,175 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:20,177 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2022-03-15 18:54:20,177 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:20,281 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [219#(not (= (mod ~g2~0 256) 0))] [2022-03-15 18:54:20,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 18:54:20,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 18:54:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 18:54:20,283 INFO L87 Difference]: Start difference. First operand 26 states and 54 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 18:54:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:20,307 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2022-03-15 18:54:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:54:20,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 18:54:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:20,309 INFO L225 Difference]: With dead ends: 34 [2022-03-15 18:54:20,309 INFO L226 Difference]: Without dead ends: 34 [2022-03-15 18:54:20,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 18:54:20,310 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:20,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:54:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-15 18:54:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-15 18:54:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 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 18:54:20,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2022-03-15 18:54:20,317 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 12 [2022-03-15 18:54:20,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:20,318 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2022-03-15 18:54:20,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 18:54:20,318 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2022-03-15 18:54:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 18:54:20,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:20,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:20,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:54:20,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash 351647856, now seen corresponding path program 1 times [2022-03-15 18:54:20,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:20,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944562445] [2022-03-15 18:54:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:20,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:20,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944562445] [2022-03-15 18:54:20,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944562445] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:20,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551893031] [2022-03-15 18:54:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:20,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:20,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:20,417 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 18:54:20,418 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 18:54:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:20,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 18:54:20,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:20,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:20,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551893031] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:20,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:20,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-03-15 18:54:20,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [651575234] [2022-03-15 18:54:20,788 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:20,789 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:20,792 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2022-03-15 18:54:20,792 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:20,895 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [402#(not (= (mod ~g2~0 256) 0))] [2022-03-15 18:54:20,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:54:20,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:54:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:54:20,896 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:20,931 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2022-03-15 18:54:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:54:20,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 18:54:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:20,932 INFO L225 Difference]: With dead ends: 42 [2022-03-15 18:54:20,932 INFO L226 Difference]: Without dead ends: 42 [2022-03-15 18:54:20,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:54:20,933 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:20,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:54:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-15 18:54:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-15 18:54:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2022-03-15 18:54:20,936 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2022-03-15 18:54:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:20,937 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2022-03-15 18:54:20,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2022-03-15 18:54:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 18:54:20,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:20,937 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:20,956 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 18:54:21,153 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 18:54:21,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash -685749539, now seen corresponding path program 2 times [2022-03-15 18:54:21,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:21,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960025880] [2022-03-15 18:54:21,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 18:54:21,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:21,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960025880] [2022-03-15 18:54:21,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960025880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:21,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034643066] [2022-03-15 18:54:21,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:54:21,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:21,283 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 18:54:21,284 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 18:54:21,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:54:21,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:21,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 18:54:21,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 18:54:21,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 18:54:21,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034643066] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:21,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:21,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-15 18:54:21,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1788485488] [2022-03-15 18:54:21,559 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:21,560 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:21,562 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2022-03-15 18:54:21,562 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:21,824 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:54:21,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 18:54:21,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:21,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 18:54:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 18:54:21,825 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:21,858 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2022-03-15 18:54:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:54:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 18:54:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:21,861 INFO L225 Difference]: With dead ends: 52 [2022-03-15 18:54:21,862 INFO L226 Difference]: Without dead ends: 52 [2022-03-15 18:54:21,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 18:54:21,867 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:21,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:54:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-15 18:54:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-03-15 18:54:21,885 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 18:54:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2022-03-15 18:54:21,885 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2022-03-15 18:54:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:21,886 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2022-03-15 18:54:21,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2022-03-15 18:54:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:54:21,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:21,886 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:21,905 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 18:54:22,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-15 18:54:22,087 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash 963149248, now seen corresponding path program 3 times [2022-03-15 18:54:22,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:22,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794361767] [2022-03-15 18:54:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:22,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:22,276 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 18:54:22,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:22,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794361767] [2022-03-15 18:54:22,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794361767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:22,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806826375] [2022-03-15 18:54:22,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:54:22,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:22,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:22,278 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 18:54:22,279 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 18:54:22,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 18:54:22,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:22,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:22,588 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 18:54:22,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:23,065 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 18:54:23,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806826375] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:23,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:23,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-03-15 18:54:23,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1200260997] [2022-03-15 18:54:23,066 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:23,067 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:23,070 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 46 transitions. [2022-03-15 18:54:23,070 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:23,635 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [874#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (< 0 (+ ~pos~0 1)))), 873#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 875#(and (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0))) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0))))] [2022-03-15 18:54:23,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:54:23,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:54:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:54:23,636 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 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 18:54:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:23,876 INFO L93 Difference]: Finished difference Result 99 states and 226 transitions. [2022-03-15 18:54:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 18:54:23,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 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 15 [2022-03-15 18:54:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:23,877 INFO L225 Difference]: With dead ends: 99 [2022-03-15 18:54:23,877 INFO L226 Difference]: Without dead ends: 94 [2022-03-15 18:54:23,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-03-15 18:54:23,878 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:23,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-15 18:54:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 60. [2022-03-15 18:54:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.406779661016949) internal successors, (142), 59 states have internal predecessors, (142), 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 18:54:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 142 transitions. [2022-03-15 18:54:23,883 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 142 transitions. Word has length 15 [2022-03-15 18:54:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:23,883 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 142 transitions. [2022-03-15 18:54:23,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 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 18:54:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 142 transitions. [2022-03-15 18:54:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:54:23,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:23,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:23,900 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 18:54:24,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:24,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash -740122602, now seen corresponding path program 4 times [2022-03-15 18:54:24,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:24,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297593400] [2022-03-15 18:54:24,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:24,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:24,295 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 18:54:24,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:24,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297593400] [2022-03-15 18:54:24,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297593400] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:24,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93819912] [2022-03-15 18:54:24,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:54:24,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:24,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:24,297 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 18:54:24,298 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 18:54:24,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:54:24,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:24,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 18:54:24,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:24,667 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 18:54:24,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:25,276 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 18:54:25,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93819912] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:25,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:25,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-03-15 18:54:25,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [571434201] [2022-03-15 18:54:25,276 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:25,278 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:25,280 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2022-03-15 18:54:25,280 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:25,822 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1210#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 1211#(and (or (not (= (mod ~g2~0 256) 0)) (<= (div ~g1~0 256) 0) (< 0 (+ ~pos~0 1))) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)) (<= 1 ~g1~0)) (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0) (<= 1 ~g1~0)) (or (not (= (mod ~g2~0 256) 0)) (<= (div ~g1~0 256) 0) (<= ~pos~0 0)))] [2022-03-15 18:54:25,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:54:25,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:54:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:54:25,823 INFO L87 Difference]: Start difference. First operand 60 states and 142 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 18:54:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:26,075 INFO L93 Difference]: Finished difference Result 89 states and 208 transitions. [2022-03-15 18:54:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 18:54:26,075 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 15 [2022-03-15 18:54:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:26,076 INFO L225 Difference]: With dead ends: 89 [2022-03-15 18:54:26,076 INFO L226 Difference]: Without dead ends: 84 [2022-03-15 18:54:26,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2022-03-15 18:54:26,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:26,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-03-15 18:54:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2022-03-15 18:54:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.4098360655737703) internal successors, (147), 61 states have internal predecessors, (147), 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 18:54:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 147 transitions. [2022-03-15 18:54:26,081 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 147 transitions. Word has length 15 [2022-03-15 18:54:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:26,081 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 147 transitions. [2022-03-15 18:54:26,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 18:54:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 147 transitions. [2022-03-15 18:54:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:54:26,082 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:26,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:26,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-15 18:54:26,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:26,295 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:26,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1720495104, now seen corresponding path program 5 times [2022-03-15 18:54:26,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:26,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805418179] [2022-03-15 18:54:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:26,462 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 18:54:26,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:26,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805418179] [2022-03-15 18:54:26,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805418179] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:26,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366023009] [2022-03-15 18:54:26,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:54:26,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:26,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:26,464 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 18:54:26,465 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 18:54:26,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 18:54:26,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:26,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:26,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:26,773 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 18:54:26,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:27,293 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 18:54:27,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366023009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:27,293 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:27,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-03-15 18:54:27,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [692418944] [2022-03-15 18:54:27,293 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:27,295 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:27,298 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 45 transitions. [2022-03-15 18:54:27,298 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:27,938 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [1537#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 1538#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 1501#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:54:27,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:54:27,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:27,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:54:27,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-03-15 18:54:27,939 INFO L87 Difference]: Start difference. First operand 62 states and 147 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 18:54:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:28,300 INFO L93 Difference]: Finished difference Result 134 states and 296 transitions. [2022-03-15 18:54:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:54:28,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 15 [2022-03-15 18:54:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:28,302 INFO L225 Difference]: With dead ends: 134 [2022-03-15 18:54:28,303 INFO L226 Difference]: Without dead ends: 112 [2022-03-15 18:54:28,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2022-03-15 18:54:28,304 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:28,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-03-15 18:54:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 66. [2022-03-15 18:54:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.4461538461538463) internal successors, (159), 65 states have internal predecessors, (159), 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 18:54:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 159 transitions. [2022-03-15 18:54:28,312 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 159 transitions. Word has length 15 [2022-03-15 18:54:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:28,313 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 159 transitions. [2022-03-15 18:54:28,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 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 18:54:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 159 transitions. [2022-03-15 18:54:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:54:28,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:28,313 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:28,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:28,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:28,515 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash 335588554, now seen corresponding path program 6 times [2022-03-15 18:54:28,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:28,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354133115] [2022-03-15 18:54:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:28,663 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 18:54:28,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:28,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354133115] [2022-03-15 18:54:28,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354133115] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:28,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775910148] [2022-03-15 18:54:28,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:54:28,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:28,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:28,666 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 18:54:28,703 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 18:54:28,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 18:54:28,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:28,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 18:54:28,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:29,054 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 18:54:29,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:29,576 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 18:54:29,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775910148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:29,576 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:29,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-03-15 18:54:29,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [923704834] [2022-03-15 18:54:29,576 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:29,577 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:29,581 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 45 transitions. [2022-03-15 18:54:29,581 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:30,085 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:54:30,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:54:30,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:54:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-03-15 18:54:30,086 INFO L87 Difference]: Start difference. First operand 66 states and 159 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 18:54:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:30,195 INFO L93 Difference]: Finished difference Result 93 states and 220 transitions. [2022-03-15 18:54:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 18:54:30,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 15 [2022-03-15 18:54:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:30,196 INFO L225 Difference]: With dead ends: 93 [2022-03-15 18:54:30,197 INFO L226 Difference]: Without dead ends: 88 [2022-03-15 18:54:30,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 11 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-03-15 18:54:30,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:30,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-03-15 18:54:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2022-03-15 18:54:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.4461538461538463) internal successors, (159), 65 states have internal predecessors, (159), 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 18:54:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 159 transitions. [2022-03-15 18:54:30,200 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 159 transitions. Word has length 15 [2022-03-15 18:54:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:30,201 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 159 transitions. [2022-03-15 18:54:30,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 18:54:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 159 transitions. [2022-03-15 18:54:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:54:30,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:30,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:30,239 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 18:54:30,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:30,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:30,408 INFO L85 PathProgramCache]: Analyzing trace with hash -644783948, now seen corresponding path program 7 times [2022-03-15 18:54:30,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:30,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103331448] [2022-03-15 18:54:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:30,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:30,588 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 18:54:30,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:30,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103331448] [2022-03-15 18:54:30,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103331448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:30,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979947695] [2022-03-15 18:54:30,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:54:30,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:30,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:30,590 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 18:54:30,591 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 18:54:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:30,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:30,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:30,894 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 18:54:30,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:31,390 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 18:54:31,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979947695] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:31,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:31,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2022-03-15 18:54:31,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [607756464] [2022-03-15 18:54:31,393 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:31,395 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:31,398 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2022-03-15 18:54:31,398 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:32,037 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2254#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 2253#(and (or (= (mod ~d2~0 256) 0) (<= (+ ~pos~0 2) 0)) (<= ~pos~0 2) (or (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0)) (< 0 (+ ~pos~0 3)))] [2022-03-15 18:54:32,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:32,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:32,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-03-15 18:54:32,038 INFO L87 Difference]: Start difference. First operand 66 states and 159 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 18:54:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:32,275 INFO L93 Difference]: Finished difference Result 149 states and 339 transitions. [2022-03-15 18:54:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 18:54:32,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 15 [2022-03-15 18:54:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:32,276 INFO L225 Difference]: With dead ends: 149 [2022-03-15 18:54:32,276 INFO L226 Difference]: Without dead ends: 144 [2022-03-15 18:54:32,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2022-03-15 18:54:32,277 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:32,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-03-15 18:54:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 98. [2022-03-15 18:54:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.5257731958762886) internal successors, (245), 97 states have internal predecessors, (245), 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 18:54:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 245 transitions. [2022-03-15 18:54:32,287 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 245 transitions. Word has length 15 [2022-03-15 18:54:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:32,287 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 245 transitions. [2022-03-15 18:54:32,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 18:54:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 245 transitions. [2022-03-15 18:54:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 18:54:32,288 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:32,288 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:32,307 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 18:54:32,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:32,489 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:32,489 INFO L85 PathProgramCache]: Analyzing trace with hash -471536256, now seen corresponding path program 8 times [2022-03-15 18:54:32,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:32,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994822952] [2022-03-15 18:54:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:32,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:32,676 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 18:54:32,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:32,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994822952] [2022-03-15 18:54:32,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994822952] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:32,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134770797] [2022-03-15 18:54:32,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:54:32,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:32,677 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 18:54:32,678 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 18:54:32,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:54:32,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:32,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:32,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:32,977 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 18:54:32,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:33,472 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 18:54:33,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134770797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:33,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:33,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2022-03-15 18:54:33,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2069649553] [2022-03-15 18:54:33,473 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:33,474 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:33,479 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 66 transitions. [2022-03-15 18:54:33,479 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:34,812 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [2712#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 2710#(and (or (= (mod ~d2~0 256) 0) (= (mod ~g2~0 256) 0) (< 0 (+ ~pos~0 1))) (or (= (mod ~d2~0 256) 0) (<= ~pos~0 0) (= (mod ~g2~0 256) 0))), 2711#(and (or (= (mod ~g2~0 256) 0) (< 0 (+ ~pos~0 1))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (<= ~pos~0 0) (= (mod ~g2~0 256) 0))), 2673#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 2709#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0)))] [2022-03-15 18:54:34,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:54:34,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:54:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:54:34,813 INFO L87 Difference]: Start difference. First operand 98 states and 245 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:35,427 INFO L93 Difference]: Finished difference Result 217 states and 496 transitions. [2022-03-15 18:54:35,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 18:54:35,428 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 18:54:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:35,429 INFO L225 Difference]: With dead ends: 217 [2022-03-15 18:54:35,429 INFO L226 Difference]: Without dead ends: 168 [2022-03-15 18:54:35,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 24 SyntacticMatches, 13 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 18:54:35,430 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:35,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-03-15 18:54:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 108. [2022-03-15 18:54:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.6542056074766354) internal successors, (284), 107 states have internal predecessors, (284), 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 18:54:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 284 transitions. [2022-03-15 18:54:35,440 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 284 transitions. Word has length 15 [2022-03-15 18:54:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:35,440 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 284 transitions. [2022-03-15 18:54:35,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 284 transitions. [2022-03-15 18:54:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 18:54:35,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:35,441 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:35,475 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 18:54:35,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 18:54:35,641 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 539404093, now seen corresponding path program 9 times [2022-03-15 18:54:35,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:35,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125311492] [2022-03-15 18:54:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:35,702 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 18:54:35,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:35,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125311492] [2022-03-15 18:54:35,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125311492] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:35,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439924657] [2022-03-15 18:54:35,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:54:35,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:35,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:35,703 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 18:54:35,721 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 18:54:35,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:54:35,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:35,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 18:54:35,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:35,901 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 18:54:35,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:36,185 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 18:54:36,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439924657] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:36,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:36,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-03-15 18:54:36,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [644348220] [2022-03-15 18:54:36,186 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:36,187 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:36,190 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2022-03-15 18:54:36,190 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:36,835 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:54:36,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 18:54:36,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 18:54:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-15 18:54:36,836 INFO L87 Difference]: Start difference. First operand 108 states and 284 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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 18:54:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:36,874 INFO L93 Difference]: Finished difference Result 124 states and 320 transitions. [2022-03-15 18:54:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:54:36,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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 18:54:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:36,875 INFO L225 Difference]: With dead ends: 124 [2022-03-15 18:54:36,875 INFO L226 Difference]: Without dead ends: 124 [2022-03-15 18:54:36,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 11 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-15 18:54:36,875 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:36,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:54:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-03-15 18:54:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 108. [2022-03-15 18:54:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.607476635514019) internal successors, (279), 107 states have internal predecessors, (279), 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 18:54:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 279 transitions. [2022-03-15 18:54:36,879 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 279 transitions. Word has length 16 [2022-03-15 18:54:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:36,879 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 279 transitions. [2022-03-15 18:54:36,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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 18:54:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 279 transitions. [2022-03-15 18:54:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 18:54:36,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:36,880 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:36,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:37,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:37,092 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash 456665325, now seen corresponding path program 10 times [2022-03-15 18:54:37,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:37,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129343196] [2022-03-15 18:54:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:37,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:37,164 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 18:54:37,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:37,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129343196] [2022-03-15 18:54:37,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129343196] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:37,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984518844] [2022-03-15 18:54:37,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:54:37,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:37,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:37,166 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 18:54:37,169 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 18:54:37,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:54:37,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:37,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 18:54:37,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:37,358 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 18:54:37,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:37,739 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 18:54:37,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984518844] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:37,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:37,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 16 [2022-03-15 18:54:37,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [220389073] [2022-03-15 18:54:37,740 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:37,741 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:37,743 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2022-03-15 18:54:37,743 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:37,958 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3719#(not (= (mod ~g2~0 256) 0))] [2022-03-15 18:54:37,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:54:37,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:54:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:37,959 INFO L87 Difference]: Start difference. First operand 108 states and 279 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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 18:54:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:38,003 INFO L93 Difference]: Finished difference Result 132 states and 325 transitions. [2022-03-15 18:54:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:54:38,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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 16 [2022-03-15 18:54:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:38,004 INFO L225 Difference]: With dead ends: 132 [2022-03-15 18:54:38,004 INFO L226 Difference]: Without dead ends: 120 [2022-03-15 18:54:38,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:38,005 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:38,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:54:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-03-15 18:54:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 82. [2022-03-15 18:54:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.432098765432099) internal successors, (197), 81 states have internal predecessors, (197), 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 18:54:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 197 transitions. [2022-03-15 18:54:38,008 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 197 transitions. Word has length 16 [2022-03-15 18:54:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 197 transitions. [2022-03-15 18:54:38,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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 18:54:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 197 transitions. [2022-03-15 18:54:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:38,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:38,008 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:38,025 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 18:54:38,221 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,SelfDestructingSolverStorable11 [2022-03-15 18:54:38,221 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:38,222 INFO L85 PathProgramCache]: Analyzing trace with hash 288206176, now seen corresponding path program 11 times [2022-03-15 18:54:38,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:38,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120528490] [2022-03-15 18:54:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:38,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:38,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:38,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120528490] [2022-03-15 18:54:38,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120528490] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:38,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054796428] [2022-03-15 18:54:38,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:54:38,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:38,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:38,456 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 18:54:38,457 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 18:54:38,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 18:54:38,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:38,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:54:38,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:38,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:39,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054796428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:39,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:39,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 21 [2022-03-15 18:54:39,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1254635897] [2022-03-15 18:54:39,509 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:39,510 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:39,514 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2022-03-15 18:54:39,514 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:40,545 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4136#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0)) (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0))), 4135#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 4138#(and (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ (div ~d1~0 256) 1)) (= ~g1~0 0)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (<= ~d1~0 (* 256 (div ~d1~0 256)))) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (= ~g1~0 0))), 4137#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (<= 0 ~pos~0)) (or (<= (div ~d1~0 256) 0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0) (= ~g1~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (<= 1 ~d1~0)))] [2022-03-15 18:54:40,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:54:40,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:54:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2022-03-15 18:54:40,547 INFO L87 Difference]: Start difference. First operand 82 states and 197 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:40,952 INFO L93 Difference]: Finished difference Result 125 states and 296 transitions. [2022-03-15 18:54:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 18:54:40,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:54:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:40,953 INFO L225 Difference]: With dead ends: 125 [2022-03-15 18:54:40,953 INFO L226 Difference]: Without dead ends: 110 [2022-03-15 18:54:40,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:54:40,955 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:40,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-15 18:54:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2022-03-15 18:54:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.430379746835443) internal successors, (192), 79 states have internal predecessors, (192), 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 18:54:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 192 transitions. [2022-03-15 18:54:40,957 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 192 transitions. Word has length 17 [2022-03-15 18:54:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:40,958 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 192 transitions. [2022-03-15 18:54:40,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 192 transitions. [2022-03-15 18:54:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:40,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:40,958 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:40,975 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 18:54:41,159 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,SelfDestructingSolverStorable12 [2022-03-15 18:54:41,159 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1935532896, now seen corresponding path program 12 times [2022-03-15 18:54:41,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:41,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788566108] [2022-03-15 18:54:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:41,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:41,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:41,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788566108] [2022-03-15 18:54:41,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788566108] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:41,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703559307] [2022-03-15 18:54:41,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:54:41,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:41,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:41,351 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 18:54:41,352 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 18:54:41,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 18:54:41,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:41,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:54:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:41,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:42,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703559307] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:42,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:42,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 21 [2022-03-15 18:54:42,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1635951818] [2022-03-15 18:54:42,456 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:42,457 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:42,460 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 52 transitions. [2022-03-15 18:54:42,461 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:43,068 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4557#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 4558#(and (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0))) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0))) (or (not (= (mod ~g2~0 256) 0)) (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0)))] [2022-03-15 18:54:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:54:43,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:54:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2022-03-15 18:54:43,069 INFO L87 Difference]: Start difference. First operand 80 states and 192 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:43,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:43,276 INFO L93 Difference]: Finished difference Result 121 states and 284 transitions. [2022-03-15 18:54:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 18:54:43,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:54:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:43,277 INFO L225 Difference]: With dead ends: 121 [2022-03-15 18:54:43,277 INFO L226 Difference]: Without dead ends: 110 [2022-03-15 18:54:43,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2022-03-15 18:54:43,277 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:43,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-15 18:54:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 78. [2022-03-15 18:54:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.4025974025974026) internal successors, (185), 77 states have internal predecessors, (185), 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 18:54:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 185 transitions. [2022-03-15 18:54:43,280 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 185 transitions. Word has length 17 [2022-03-15 18:54:43,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:43,280 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 185 transitions. [2022-03-15 18:54:43,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 185 transitions. [2022-03-15 18:54:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:43,280 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:43,280 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:43,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 18:54:43,497 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,SelfDestructingSolverStorable13 [2022-03-15 18:54:43,497 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash 232261046, now seen corresponding path program 13 times [2022-03-15 18:54:43,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:43,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684024871] [2022-03-15 18:54:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:43,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:43,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:43,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684024871] [2022-03-15 18:54:43,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684024871] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:43,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597131948] [2022-03-15 18:54:43,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:54:43,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:43,763 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:54:43,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 18:54:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:43,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:43,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:44,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:45,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597131948] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:45,026 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:45,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 24 [2022-03-15 18:54:45,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1742860848] [2022-03-15 18:54:45,027 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:45,028 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:45,031 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 47 transitions. [2022-03-15 18:54:45,031 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:45,786 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4968#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 4969#(and (or (not (= (mod ~g2~0 256) 0)) (<= (div ~g1~0 256) 0) (< 0 (+ ~pos~0 1))) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)) (<= 1 ~g1~0)) (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0) (<= 1 ~g1~0)) (or (not (= (mod ~g2~0 256) 0)) (<= (div ~g1~0 256) 0) (<= ~pos~0 0)))] [2022-03-15 18:54:45,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:54:45,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:54:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2022-03-15 18:54:45,787 INFO L87 Difference]: Start difference. First operand 78 states and 185 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:46,206 INFO L93 Difference]: Finished difference Result 115 states and 266 transitions. [2022-03-15 18:54:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:54:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:54:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:46,206 INFO L225 Difference]: With dead ends: 115 [2022-03-15 18:54:46,207 INFO L226 Difference]: Without dead ends: 110 [2022-03-15 18:54:46,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:54:46,207 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:46,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-15 18:54:46,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2022-03-15 18:54:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.4050632911392404) internal successors, (190), 79 states have internal predecessors, (190), 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 18:54:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 190 transitions. [2022-03-15 18:54:46,209 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 190 transitions. Word has length 17 [2022-03-15 18:54:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:46,210 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 190 transitions. [2022-03-15 18:54:46,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 190 transitions. [2022-03-15 18:54:46,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:46,210 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:46,210 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:46,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-15 18:54:46,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 18:54:46,411 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:46,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash -748111456, now seen corresponding path program 14 times [2022-03-15 18:54:46,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:46,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67397806] [2022-03-15 18:54:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:46,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:46,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67397806] [2022-03-15 18:54:46,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67397806] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:46,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786887319] [2022-03-15 18:54:46,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:54:46,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:46,646 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:54:46,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 18:54:46,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:54:46,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:46,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:46,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:47,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:47,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786887319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:47,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:47,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 24 [2022-03-15 18:54:47,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [171738900] [2022-03-15 18:54:47,817 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:47,818 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:47,821 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 51 transitions. [2022-03-15 18:54:47,821 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:48,565 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [5381#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 5335#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 5379#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 5380#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:54:48,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:54:48,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:48,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:54:48,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2022-03-15 18:54:48,566 INFO L87 Difference]: Start difference. First operand 80 states and 190 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:54:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:49,290 INFO L93 Difference]: Finished difference Result 191 states and 424 transitions. [2022-03-15 18:54:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 18:54:49,291 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:54:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:49,292 INFO L225 Difference]: With dead ends: 191 [2022-03-15 18:54:49,292 INFO L226 Difference]: Without dead ends: 186 [2022-03-15 18:54:49,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 18:54:49,293 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:49,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-03-15 18:54:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 86. [2022-03-15 18:54:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.4) internal successors, (204), 85 states have internal predecessors, (204), 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 18:54:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 204 transitions. [2022-03-15 18:54:49,296 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 204 transitions. Word has length 17 [2022-03-15 18:54:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:49,296 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 204 transitions. [2022-03-15 18:54:49,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:54:49,296 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 204 transitions. [2022-03-15 18:54:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:49,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:49,296 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:49,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:49,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:49,503 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:49,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1307972202, now seen corresponding path program 15 times [2022-03-15 18:54:49,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:49,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828810463] [2022-03-15 18:54:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:49,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:49,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828810463] [2022-03-15 18:54:49,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828810463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:49,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229191882] [2022-03-15 18:54:49,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:54:49,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:49,756 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:54:49,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 18:54:49,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:54:49,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:49,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:49,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:50,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:50,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229191882] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:50,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:50,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2022-03-15 18:54:50,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1808518771] [2022-03-15 18:54:50,967 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:50,969 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:50,971 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 47 transitions. [2022-03-15 18:54:50,972 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:51,513 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5888#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:54:51,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:51,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:51,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:51,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-03-15 18:54:51,514 INFO L87 Difference]: Start difference. First operand 86 states and 204 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 18:54:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:51,846 INFO L93 Difference]: Finished difference Result 119 states and 286 transitions. [2022-03-15 18:54:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 18:54:51,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 17 [2022-03-15 18:54:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:51,847 INFO L225 Difference]: With dead ends: 119 [2022-03-15 18:54:51,847 INFO L226 Difference]: Without dead ends: 114 [2022-03-15 18:54:51,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2022-03-15 18:54:51,847 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:51,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-03-15 18:54:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 90. [2022-03-15 18:54:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.404494382022472) internal successors, (214), 89 states have internal predecessors, (214), 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 18:54:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 214 transitions. [2022-03-15 18:54:51,850 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 214 transitions. Word has length 17 [2022-03-15 18:54:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:51,850 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 214 transitions. [2022-03-15 18:54:51,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 18:54:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 214 transitions. [2022-03-15 18:54:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:51,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:51,850 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:51,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:52,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 18:54:52,051 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash 327599700, now seen corresponding path program 16 times [2022-03-15 18:54:52,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:52,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097413512] [2022-03-15 18:54:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:52,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:52,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097413512] [2022-03-15 18:54:52,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097413512] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:52,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61349558] [2022-03-15 18:54:52,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:54:52,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:52,320 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:54:52,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 18:54:52,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:54:52,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:52,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:54:52,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:52,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:53,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61349558] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:53,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:53,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-03-15 18:54:53,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [748735660] [2022-03-15 18:54:53,474 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:53,475 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:53,478 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 51 transitions. [2022-03-15 18:54:53,478 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:54,278 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [6323#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 6321#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 6277#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 6322#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:54:54,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:54:54,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:54:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-03-15 18:54:54,279 INFO L87 Difference]: Start difference. First operand 90 states and 214 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:54:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:55,059 INFO L93 Difference]: Finished difference Result 147 states and 339 transitions. [2022-03-15 18:54:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 18:54:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:54:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:55,060 INFO L225 Difference]: With dead ends: 147 [2022-03-15 18:54:55,060 INFO L226 Difference]: Without dead ends: 142 [2022-03-15 18:54:55,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=395, Invalid=1327, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 18:54:55,061 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:55,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-03-15 18:54:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2022-03-15 18:54:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.404494382022472) internal successors, (214), 89 states have internal predecessors, (214), 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 18:54:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 214 transitions. [2022-03-15 18:54:55,063 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 214 transitions. Word has length 17 [2022-03-15 18:54:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:55,064 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 214 transitions. [2022-03-15 18:54:55,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:54:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 214 transitions. [2022-03-15 18:54:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:55,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:55,064 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:55,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-15 18:54:55,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 18:54:55,280 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -281912450, now seen corresponding path program 17 times [2022-03-15 18:54:55,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:55,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476913012] [2022-03-15 18:54:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:55,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:55,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476913012] [2022-03-15 18:54:55,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476913012] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:55,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362517109] [2022-03-15 18:54:55,515 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:54:55,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:55,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:55,516 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:54:55,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 18:54:55,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 18:54:55,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:55,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:54:55,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:56,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:56,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362517109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:56,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:56,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-03-15 18:54:56,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1656039661] [2022-03-15 18:54:56,808 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:56,809 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:56,812 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2022-03-15 18:54:56,812 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:57,976 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [6754#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 6802#(and (or (= (mod ~d2~0 256) 0) (= (mod ~g2~0 256) 0) (< 0 (+ ~pos~0 1))) (or (= (mod ~d2~0 256) 0) (<= ~pos~0 0) (= (mod ~g2~0 256) 0))), 6800#(and (or (= ~g2~0 1) (= ~g2~0 0) (not (= (mod ~g1~0 256) 0))) (or (= ~g2~0 0) (<= ~pos~0 2) (not (= (mod ~g1~0 256) 0))) (or (= ~g2~0 0) (<= 2 ~pos~0) (not (= (mod ~g1~0 256) 0)))), 6798#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 6799#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 6801#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0)))] [2022-03-15 18:54:57,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 18:54:57,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 18:54:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2022-03-15 18:54:57,977 INFO L87 Difference]: Start difference. First operand 90 states and 214 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:59,145 INFO L93 Difference]: Finished difference Result 166 states and 379 transitions. [2022-03-15 18:54:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 18:54:59,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:54:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:59,146 INFO L225 Difference]: With dead ends: 166 [2022-03-15 18:54:59,146 INFO L226 Difference]: Without dead ends: 132 [2022-03-15 18:54:59,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 12 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 18:54:59,147 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:59,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-03-15 18:54:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 90. [2022-03-15 18:54:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.404494382022472) internal successors, (214), 89 states have internal predecessors, (214), 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 18:54:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 214 transitions. [2022-03-15 18:54:59,149 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 214 transitions. Word has length 17 [2022-03-15 18:54:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:59,149 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 214 transitions. [2022-03-15 18:54:59,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 214 transitions. [2022-03-15 18:54:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:54:59,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:59,150 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:59,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:59,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:59,366 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:54:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash -173501898, now seen corresponding path program 18 times [2022-03-15 18:54:59,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:59,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728246407] [2022-03-15 18:54:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:59,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:59,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:59,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728246407] [2022-03-15 18:54:59,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728246407] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:59,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400363215] [2022-03-15 18:54:59,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:54:59,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:59,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:59,541 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:54:59,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 18:54:59,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 18:54:59,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:59,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:54:59,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:59,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:00,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400363215] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:00,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:00,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 21 [2022-03-15 18:55:00,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [59305543] [2022-03-15 18:55:00,545 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:00,546 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:00,550 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 57 transitions. [2022-03-15 18:55:00,550 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:01,316 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:55:01,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:55:01,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:55:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:55:01,317 INFO L87 Difference]: Start difference. First operand 90 states and 214 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 18:55:01,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:01,400 INFO L93 Difference]: Finished difference Result 160 states and 380 transitions. [2022-03-15 18:55:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 18:55:01,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 17 [2022-03-15 18:55:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:01,400 INFO L225 Difference]: With dead ends: 160 [2022-03-15 18:55:01,400 INFO L226 Difference]: Without dead ends: 122 [2022-03-15 18:55:01,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:55:01,401 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:01,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:55:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-15 18:55:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 96. [2022-03-15 18:55:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.4105263157894736) internal successors, (229), 95 states have internal predecessors, (229), 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 18:55:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 229 transitions. [2022-03-15 18:55:01,403 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 229 transitions. Word has length 17 [2022-03-15 18:55:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:01,403 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 229 transitions. [2022-03-15 18:55:01,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 18:55:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 229 transitions. [2022-03-15 18:55:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:55:01,404 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:01,404 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:01,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:01,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:01,619 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:01,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash -685092832, now seen corresponding path program 19 times [2022-03-15 18:55:01,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:01,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534755590] [2022-03-15 18:55:01,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:01,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:01,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:01,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534755590] [2022-03-15 18:55:01,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534755590] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:01,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911917216] [2022-03-15 18:55:01,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:55:01,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:01,944 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:01,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 18:55:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:02,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:55:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:02,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:03,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911917216] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:03,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:03,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 24 [2022-03-15 18:55:03,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1693277521] [2022-03-15 18:55:03,120 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:03,122 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:03,125 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 51 transitions. [2022-03-15 18:55:03,125 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:04,087 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [7738#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 7783#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 7782#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 7784#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0)))] [2022-03-15 18:55:04,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:55:04,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:55:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-03-15 18:55:04,088 INFO L87 Difference]: Start difference. First operand 96 states and 229 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:55:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:05,451 INFO L93 Difference]: Finished difference Result 175 states and 395 transitions. [2022-03-15 18:55:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 18:55:05,452 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:55:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:05,452 INFO L225 Difference]: With dead ends: 175 [2022-03-15 18:55:05,452 INFO L226 Difference]: Without dead ends: 170 [2022-03-15 18:55:05,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=441, Invalid=1539, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 18:55:05,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:05,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:55:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-03-15 18:55:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 94. [2022-03-15 18:55:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.4086021505376345) internal successors, (224), 93 states have internal predecessors, (224), 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 18:55:05,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 224 transitions. [2022-03-15 18:55:05,456 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 224 transitions. Word has length 17 [2022-03-15 18:55:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:05,456 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 224 transitions. [2022-03-15 18:55:05,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:55:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 224 transitions. [2022-03-15 18:55:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:55:05,456 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:05,456 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:05,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:05,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:05,663 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1294604982, now seen corresponding path program 20 times [2022-03-15 18:55:05,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:05,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126119298] [2022-03-15 18:55:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:05,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:05,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:05,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126119298] [2022-03-15 18:55:05,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126119298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:05,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196276413] [2022-03-15 18:55:05,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:55:05,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:05,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:05,894 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:05,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 18:55:05,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:55:05,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:05,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:55:05,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:06,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:07,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196276413] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:07,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:07,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2022-03-15 18:55:07,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [587368419] [2022-03-15 18:55:07,191 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:07,192 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:07,196 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2022-03-15 18:55:07,196 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:08,667 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [8304#(and (or (not (= (* (div ~d2~0 256) 256) ~d2~0)) (not (= (mod ~g1~0 256) 0)) (not (= ~g2~0 0))) (or (= ~g2~0 1) (= ~g2~0 0) (not (= (mod ~g1~0 256) 0))) (or (= ~g2~0 0) (<= ~pos~0 2) (not (= (mod ~g1~0 256) 0))) (or (= ~g2~0 0) (<= 2 ~pos~0) (not (= (mod ~g1~0 256) 0)))), 8302#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 8305#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 8303#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 8258#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 8306#(and (or (= (mod ~d2~0 256) 0) (= (mod ~g2~0 256) 0) (< 0 (+ ~pos~0 1))) (or (= (mod ~d2~0 256) 0) (<= ~pos~0 0) (= (mod ~g2~0 256) 0)))] [2022-03-15 18:55:08,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:55:08,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:08,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:55:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2022-03-15 18:55:08,668 INFO L87 Difference]: Start difference. First operand 94 states and 224 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 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 18:55:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:10,262 INFO L93 Difference]: Finished difference Result 223 states and 524 transitions. [2022-03-15 18:55:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 18:55:10,262 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:55:10,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:10,263 INFO L225 Difference]: With dead ends: 223 [2022-03-15 18:55:10,263 INFO L226 Difference]: Without dead ends: 194 [2022-03-15 18:55:10,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 12 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=609, Invalid=2253, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 18:55:10,264 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 136 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:10,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 0 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:55:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-03-15 18:55:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 122. [2022-03-15 18:55:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.4710743801652892) internal successors, (299), 121 states have internal predecessors, (299), 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 18:55:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2022-03-15 18:55:10,267 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 17 [2022-03-15 18:55:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:10,268 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2022-03-15 18:55:10,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 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 18:55:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2022-03-15 18:55:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:55:10,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:10,268 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:10,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:10,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-15 18:55:10,485 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1502199318, now seen corresponding path program 21 times [2022-03-15 18:55:10,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:10,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013810274] [2022-03-15 18:55:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:10,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:10,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013810274] [2022-03-15 18:55:10,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013810274] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:10,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394439104] [2022-03-15 18:55:10,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:55:10,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:10,649 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:10,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 18:55:10,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:55:10,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:10,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:55:10,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:11,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:11,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394439104] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:11,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:11,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 22 [2022-03-15 18:55:11,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [918012327] [2022-03-15 18:55:11,696 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:11,697 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:11,701 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2022-03-15 18:55:11,701 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:12,557 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:55:12,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 18:55:12,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 18:55:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-03-15 18:55:12,558 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:12,616 INFO L93 Difference]: Finished difference Result 163 states and 397 transitions. [2022-03-15 18:55:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:55:12,624 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:55:12,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:12,624 INFO L225 Difference]: With dead ends: 163 [2022-03-15 18:55:12,624 INFO L226 Difference]: Without dead ends: 150 [2022-03-15 18:55:12,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 16 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-03-15 18:55:12,625 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:12,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:55:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-03-15 18:55:12,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 134. [2022-03-15 18:55:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.488721804511278) internal successors, (331), 133 states have internal predecessors, (331), 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 18:55:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 331 transitions. [2022-03-15 18:55:12,628 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 331 transitions. Word has length 17 [2022-03-15 18:55:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:12,628 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 331 transitions. [2022-03-15 18:55:12,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:12,628 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 331 transitions. [2022-03-15 18:55:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:55:12,629 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:12,629 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:12,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-03-15 18:55:12,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-15 18:55:12,843 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:12,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1530948180, now seen corresponding path program 22 times [2022-03-15 18:55:12,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:12,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178698017] [2022-03-15 18:55:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:12,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:13,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:13,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178698017] [2022-03-15 18:55:13,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178698017] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:13,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862158980] [2022-03-15 18:55:13,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:55:13,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:13,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:13,072 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:13,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 18:55:13,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:55:13,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 18:55:13,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:13,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:14,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862158980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:14,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:14,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-03-15 18:55:14,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [529244758] [2022-03-15 18:55:14,215 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:14,216 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:14,220 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 56 transitions. [2022-03-15 18:55:14,220 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:15,097 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [9491#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 9492#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (not (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0))) (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (not (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0))))] [2022-03-15 18:55:15,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 18:55:15,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:15,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 18:55:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-03-15 18:55:15,098 INFO L87 Difference]: Start difference. First operand 134 states and 331 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:15,628 INFO L93 Difference]: Finished difference Result 208 states and 505 transitions. [2022-03-15 18:55:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 18:55:15,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:55:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:15,629 INFO L225 Difference]: With dead ends: 208 [2022-03-15 18:55:15,629 INFO L226 Difference]: Without dead ends: 188 [2022-03-15 18:55:15,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:55:15,630 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:15,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-03-15 18:55:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 148. [2022-03-15 18:55:15,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.489795918367347) internal successors, (366), 147 states have internal predecessors, (366), 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 18:55:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 366 transitions. [2022-03-15 18:55:15,633 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 366 transitions. Word has length 17 [2022-03-15 18:55:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:15,633 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 366 transitions. [2022-03-15 18:55:15,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 366 transitions. [2022-03-15 18:55:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:55:15,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:15,634 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:15,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:15,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:15,835 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:15,835 INFO L85 PathProgramCache]: Analyzing trace with hash 518255648, now seen corresponding path program 23 times [2022-03-15 18:55:15,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:15,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061811342] [2022-03-15 18:55:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:16,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:16,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061811342] [2022-03-15 18:55:16,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061811342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:16,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627760556] [2022-03-15 18:55:16,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:55:16,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:16,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:16,069 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:16,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 18:55:16,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 18:55:16,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:16,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:55:16,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:16,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:17,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627760556] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:17,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:17,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-03-15 18:55:17,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [80999443] [2022-03-15 18:55:17,219 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:17,220 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:17,224 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2022-03-15 18:55:17,224 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:18,252 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [10137#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (< 0 (+ ~pos~0 1)))), 10136#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 10138#(and (or (<= (div ~d1~0 256) 0) (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (<= 1 ~d1~0)) (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (<= 1 ~d1~0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (= ~g1~0 0)) (or (<= (div ~d1~0 256) 0) (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)))] [2022-03-15 18:55:18,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:55:18,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:18,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:55:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2022-03-15 18:55:18,253 INFO L87 Difference]: Start difference. First operand 148 states and 366 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 18:55:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:19,014 INFO L93 Difference]: Finished difference Result 288 states and 671 transitions. [2022-03-15 18:55:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 18:55:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:55:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:19,016 INFO L225 Difference]: With dead ends: 288 [2022-03-15 18:55:19,016 INFO L226 Difference]: Without dead ends: 272 [2022-03-15 18:55:19,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 13 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=496, Invalid=1226, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 18:55:19,017 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:19,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-03-15 18:55:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 162. [2022-03-15 18:55:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.527950310559006) internal successors, (407), 161 states have internal predecessors, (407), 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 18:55:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 407 transitions. [2022-03-15 18:55:19,021 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 407 transitions. Word has length 17 [2022-03-15 18:55:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:19,021 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 407 transitions. [2022-03-15 18:55:19,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 18:55:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 407 transitions. [2022-03-15 18:55:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:55:19,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:19,022 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:19,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:19,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:19,227 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1185016202, now seen corresponding path program 24 times [2022-03-15 18:55:19,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:19,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467293808] [2022-03-15 18:55:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:19,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:19,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:19,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467293808] [2022-03-15 18:55:19,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467293808] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:19,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830672831] [2022-03-15 18:55:19,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:55:19,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:19,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:19,470 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:19,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 18:55:19,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 18:55:19,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:19,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:55:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:19,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:20,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830672831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:20,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:20,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-03-15 18:55:20,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1055258928] [2022-03-15 18:55:20,693 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:20,694 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:20,697 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 55 transitions. [2022-03-15 18:55:20,697 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:21,496 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [10898#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 10899#(and (or (not (= (mod ~g2~0 256) 0)) (<= (div ~g1~0 256) 0) (< 0 (+ ~pos~0 1))) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)) (<= 1 ~g1~0)) (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0) (<= 1 ~g1~0)) (or (not (= (mod ~g2~0 256) 0)) (<= (div ~g1~0 256) 0) (<= ~pos~0 0)))] [2022-03-15 18:55:21,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:55:21,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:21,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:55:21,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-03-15 18:55:21,497 INFO L87 Difference]: Start difference. First operand 162 states and 407 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 18:55:22,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:22,115 INFO L93 Difference]: Finished difference Result 231 states and 559 transitions. [2022-03-15 18:55:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 18:55:22,116 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:55:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:22,117 INFO L225 Difference]: With dead ends: 231 [2022-03-15 18:55:22,117 INFO L226 Difference]: Without dead ends: 226 [2022-03-15 18:55:22,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 13 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 18:55:22,118 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 107 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:22,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 0 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:22,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-03-15 18:55:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 166. [2022-03-15 18:55:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.5393939393939395) internal successors, (419), 165 states have internal predecessors, (419), 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 18:55:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 419 transitions. [2022-03-15 18:55:22,123 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 419 transitions. Word has length 17 [2022-03-15 18:55:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:22,123 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 419 transitions. [2022-03-15 18:55:22,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 18:55:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 419 transitions. [2022-03-15 18:55:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 18:55:22,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:22,124 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:22,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:22,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 18:55:22,344 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2129578592, now seen corresponding path program 25 times [2022-03-15 18:55:22,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:22,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293432880] [2022-03-15 18:55:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:22,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:22,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293432880] [2022-03-15 18:55:22,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293432880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:22,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515579295] [2022-03-15 18:55:22,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:55:22,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:22,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:22,609 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:22,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 18:55:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:22,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:55:22,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:23,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:23,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515579295] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:23,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:23,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-15 18:55:23,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [57181882] [2022-03-15 18:55:23,699 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:23,700 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:23,704 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 59 transitions. [2022-03-15 18:55:23,704 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:24,655 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [11607#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 11608#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 11563#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 11609#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:55:24,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:55:24,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:55:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2022-03-15 18:55:24,656 INFO L87 Difference]: Start difference. First operand 166 states and 419 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:25,614 INFO L93 Difference]: Finished difference Result 258 states and 604 transitions. [2022-03-15 18:55:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 18:55:25,615 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 18:55:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:25,616 INFO L225 Difference]: With dead ends: 258 [2022-03-15 18:55:25,616 INFO L226 Difference]: Without dead ends: 246 [2022-03-15 18:55:25,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 16 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=421, Invalid=1471, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 18:55:25,616 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:25,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:55:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-03-15 18:55:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 170. [2022-03-15 18:55:25,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.5207100591715976) internal successors, (426), 169 states have internal predecessors, (426), 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 18:55:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 426 transitions. [2022-03-15 18:55:25,620 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 426 transitions. Word has length 17 [2022-03-15 18:55:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:25,620 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 426 transitions. [2022-03-15 18:55:25,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 426 transitions. [2022-03-15 18:55:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:25,621 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:25,621 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:25,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:25,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 18:55:25,821 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:25,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1158177514, now seen corresponding path program 26 times [2022-03-15 18:55:25,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:25,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241029351] [2022-03-15 18:55:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:25,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:26,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:26,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241029351] [2022-03-15 18:55:26,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241029351] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:26,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029971742] [2022-03-15 18:55:26,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:55:26,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:26,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:26,151 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:26,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 18:55:26,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:55:26,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:26,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:55:26,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:26,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:27,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029971742] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:27,738 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:27,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-03-15 18:55:27,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1035826211] [2022-03-15 18:55:27,738 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:27,739 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:27,744 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 66 transitions. [2022-03-15 18:55:27,744 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:29,156 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [12376#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 12377#(and (or (= (mod ~d2~0 256) 0) (= (mod ~g2~0 256) 0) (< 0 (+ ~pos~0 1))) (or (= (mod ~d2~0 256) 0) (<= ~pos~0 0) (= (mod ~g2~0 256) 0))), 12325#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:55:29,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:55:29,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:29,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:55:29,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2022-03-15 18:55:29,157 INFO L87 Difference]: Start difference. First operand 170 states and 426 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 18:55:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:29,785 INFO L93 Difference]: Finished difference Result 312 states and 748 transitions. [2022-03-15 18:55:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 18:55:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:55:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:29,787 INFO L225 Difference]: With dead ends: 312 [2022-03-15 18:55:29,787 INFO L226 Difference]: Without dead ends: 274 [2022-03-15 18:55:29,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 17 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 18:55:29,788 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:29,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-15 18:55:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 162. [2022-03-15 18:55:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.5093167701863353) internal successors, (404), 161 states have internal predecessors, (404), 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 18:55:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 404 transitions. [2022-03-15 18:55:29,791 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 404 transitions. Word has length 19 [2022-03-15 18:55:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:29,791 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 404 transitions. [2022-03-15 18:55:29,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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 18:55:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 404 transitions. [2022-03-15 18:55:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:29,792 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:29,792 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:29,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:30,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 18:55:30,011 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:30,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash 950583178, now seen corresponding path program 27 times [2022-03-15 18:55:30,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:30,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502208426] [2022-03-15 18:55:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:30,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:30,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502208426] [2022-03-15 18:55:30,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502208426] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:30,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489743148] [2022-03-15 18:55:30,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:55:30,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:30,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:30,248 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:30,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 18:55:30,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:55:30,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:30,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:55:30,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:30,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:31,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489743148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:31,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:31,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 26 [2022-03-15 18:55:31,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1757927488] [2022-03-15 18:55:31,693 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:31,695 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:31,699 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 63 transitions. [2022-03-15 18:55:31,699 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:32,492 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [13175#(and (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0))) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0))) (or (not (= (mod ~g2~0 256) 0)) (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0))), 13174#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 13176#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (not (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0))) (or (not (= (mod ~g2~0 256) 0)) (<= 0 ~pos~0)))] [2022-03-15 18:55:32,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:55:32,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:55:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-03-15 18:55:32,493 INFO L87 Difference]: Start difference. First operand 162 states and 404 transitions. Second operand has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 18:55:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:32,833 INFO L93 Difference]: Finished difference Result 252 states and 617 transitions. [2022-03-15 18:55:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 18:55:32,833 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:55:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:32,834 INFO L225 Difference]: With dead ends: 252 [2022-03-15 18:55:32,834 INFO L226 Difference]: Without dead ends: 200 [2022-03-15 18:55:32,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 18:55:32,835 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:32,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:55:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-03-15 18:55:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 134. [2022-03-15 18:55:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.4586466165413534) internal successors, (327), 133 states have internal predecessors, (327), 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 18:55:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 327 transitions. [2022-03-15 18:55:32,838 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 327 transitions. Word has length 19 [2022-03-15 18:55:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:32,838 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 327 transitions. [2022-03-15 18:55:32,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 18:55:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 327 transitions. [2022-03-15 18:55:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:32,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:32,838 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:32,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-15 18:55:33,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 18:55:33,051 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash -311236620, now seen corresponding path program 28 times [2022-03-15 18:55:33,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:33,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612887387] [2022-03-15 18:55:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:33,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:33,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612887387] [2022-03-15 18:55:33,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612887387] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:33,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709139940] [2022-03-15 18:55:33,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:55:33,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:33,331 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:33,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 18:55:33,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:55:33,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:33,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 18:55:33,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:34,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:35,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709139940] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:35,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:35,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-03-15 18:55:35,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [971775306] [2022-03-15 18:55:35,171 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:35,172 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:35,176 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 58 transitions. [2022-03-15 18:55:35,176 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:36,109 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [13853#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (< 0 (+ ~pos~0 1)))), 13852#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 13854#(and (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (= ~g1~0 0)))] [2022-03-15 18:55:36,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:55:36,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:55:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:55:36,110 INFO L87 Difference]: Start difference. First operand 134 states and 327 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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 18:55:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:37,184 INFO L93 Difference]: Finished difference Result 263 states and 624 transitions. [2022-03-15 18:55:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 18:55:37,185 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:55:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:37,186 INFO L225 Difference]: With dead ends: 263 [2022-03-15 18:55:37,186 INFO L226 Difference]: Without dead ends: 258 [2022-03-15 18:55:37,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=462, Invalid=2088, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 18:55:37,187 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:37,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-15 18:55:37,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 158. [2022-03-15 18:55:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.5286624203821657) internal successors, (397), 157 states have internal predecessors, (397), 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 18:55:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 397 transitions. [2022-03-15 18:55:37,190 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 397 transitions. Word has length 19 [2022-03-15 18:55:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:37,190 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 397 transitions. [2022-03-15 18:55:37,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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 18:55:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 397 transitions. [2022-03-15 18:55:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:37,191 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:37,191 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:37,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:37,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:37,419 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1300086324, now seen corresponding path program 29 times [2022-03-15 18:55:37,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:37,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025166737] [2022-03-15 18:55:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:37,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:37,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025166737] [2022-03-15 18:55:37,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025166737] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:37,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586548536] [2022-03-15 18:55:37,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:55:37,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:37,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:37,832 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:37,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 18:55:37,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 18:55:37,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:37,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 18:55:37,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:38,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:39,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586548536] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:39,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:39,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 28 [2022-03-15 18:55:39,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1114957246] [2022-03-15 18:55:39,286 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:39,287 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:39,291 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2022-03-15 18:55:39,291 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:40,368 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [14554#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 14606#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 14608#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 14607#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:55:40,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:55:40,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:55:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 18:55:40,369 INFO L87 Difference]: Start difference. First operand 158 states and 397 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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 18:55:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:41,426 INFO L93 Difference]: Finished difference Result 265 states and 646 transitions. [2022-03-15 18:55:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 18:55:41,426 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:55:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:41,427 INFO L225 Difference]: With dead ends: 265 [2022-03-15 18:55:41,427 INFO L226 Difference]: Without dead ends: 260 [2022-03-15 18:55:41,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 15 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 18:55:41,428 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:41,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-03-15 18:55:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 166. [2022-03-15 18:55:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.5393939393939395) internal successors, (419), 165 states have internal predecessors, (419), 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 18:55:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 419 transitions. [2022-03-15 18:55:41,432 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 419 transitions. Word has length 19 [2022-03-15 18:55:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:41,432 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 419 transitions. [2022-03-15 18:55:41,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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 18:55:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 419 transitions. [2022-03-15 18:55:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:41,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:41,432 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:41,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:41,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:41,647 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:41,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash 287393792, now seen corresponding path program 30 times [2022-03-15 18:55:41,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:41,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971412858] [2022-03-15 18:55:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:41,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:41,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971412858] [2022-03-15 18:55:41,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971412858] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:41,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496950107] [2022-03-15 18:55:41,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:55:41,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:41,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:41,958 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:41,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 18:55:42,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 18:55:42,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:42,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:55:42,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:42,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:43,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496950107] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:43,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:43,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2022-03-15 18:55:43,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [438121816] [2022-03-15 18:55:43,719 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:43,720 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:43,724 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2022-03-15 18:55:43,724 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:44,659 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [15320#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1)))), 15372#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 15373#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0)))] [2022-03-15 18:55:44,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:55:44,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:55:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=838, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:55:44,660 INFO L87 Difference]: Start difference. First operand 166 states and 419 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:55:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:45,140 INFO L93 Difference]: Finished difference Result 261 states and 630 transitions. [2022-03-15 18:55:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 18:55:45,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:55:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:45,142 INFO L225 Difference]: With dead ends: 261 [2022-03-15 18:55:45,142 INFO L226 Difference]: Without dead ends: 236 [2022-03-15 18:55:45,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 12 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=1321, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 18:55:45,142 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:45,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-15 18:55:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 182. [2022-03-15 18:55:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.5580110497237567) internal successors, (463), 181 states have internal predecessors, (463), 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 18:55:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 463 transitions. [2022-03-15 18:55:45,146 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 463 transitions. Word has length 19 [2022-03-15 18:55:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:45,146 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 463 transitions. [2022-03-15 18:55:45,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 18:55:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 463 transitions. [2022-03-15 18:55:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:45,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:45,147 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:45,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:45,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-03-15 18:55:45,363 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:45,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1448816320, now seen corresponding path program 31 times [2022-03-15 18:55:45,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:45,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659004850] [2022-03-15 18:55:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:45,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:45,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:45,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659004850] [2022-03-15 18:55:45,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659004850] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:45,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241810856] [2022-03-15 18:55:45,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:55:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:45,692 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:45,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 18:55:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:45,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:55:45,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:46,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:47,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241810856] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:47,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:47,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2022-03-15 18:55:47,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1507712963] [2022-03-15 18:55:47,201 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:47,202 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:47,207 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 58 transitions. [2022-03-15 18:55:47,207 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:48,054 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [16154#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1)))), 16155#(and (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0))) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0))) (or (not (= (mod ~g2~0 256) 0)) (= (+ ~d1~0 (* (- 256) (div ~d1~0 256))) 0)))] [2022-03-15 18:55:48,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:55:48,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:55:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=822, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 18:55:48,055 INFO L87 Difference]: Start difference. First operand 182 states and 463 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 18:55:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:48,716 INFO L93 Difference]: Finished difference Result 406 states and 1022 transitions. [2022-03-15 18:55:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 18:55:48,716 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:55:48,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:48,718 INFO L225 Difference]: With dead ends: 406 [2022-03-15 18:55:48,718 INFO L226 Difference]: Without dead ends: 382 [2022-03-15 18:55:48,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=439, Invalid=1631, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 18:55:48,718 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:48,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:48,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-03-15 18:55:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 244. [2022-03-15 18:55:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.5555555555555554) internal successors, (621), 243 states have internal predecessors, (621), 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 18:55:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 621 transitions. [2022-03-15 18:55:48,723 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 621 transitions. Word has length 19 [2022-03-15 18:55:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:48,723 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 621 transitions. [2022-03-15 18:55:48,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 18:55:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 621 transitions. [2022-03-15 18:55:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:48,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:48,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:48,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:48,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:48,935 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash -254455530, now seen corresponding path program 32 times [2022-03-15 18:55:48,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:48,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481911879] [2022-03-15 18:55:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:48,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:49,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:49,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481911879] [2022-03-15 18:55:49,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481911879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:49,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674074735] [2022-03-15 18:55:49,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:55:49,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:49,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:49,261 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:49,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 18:55:49,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:55:49,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:49,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:55:49,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:49,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:50,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674074735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:50,805 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:50,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 28 [2022-03-15 18:55:50,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [532220596] [2022-03-15 18:55:50,806 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:50,807 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:50,817 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 53 transitions. [2022-03-15 18:55:50,817 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:51,479 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17214#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:55:51,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:55:51,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:55:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2022-03-15 18:55:51,480 INFO L87 Difference]: Start difference. First operand 244 states and 621 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 18:55:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:52,042 INFO L93 Difference]: Finished difference Result 356 states and 891 transitions. [2022-03-15 18:55:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:55:52,053 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 19 [2022-03-15 18:55:52,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:52,054 INFO L225 Difference]: With dead ends: 356 [2022-03-15 18:55:52,054 INFO L226 Difference]: Without dead ends: 334 [2022-03-15 18:55:52,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=368, Invalid=1354, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 18:55:52,055 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:52,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-03-15 18:55:52,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 264. [2022-03-15 18:55:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.555133079847909) internal successors, (672), 263 states have internal predecessors, (672), 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 18:55:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 672 transitions. [2022-03-15 18:55:52,060 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 672 transitions. Word has length 19 [2022-03-15 18:55:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:52,060 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 672 transitions. [2022-03-15 18:55:52,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 18:55:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 672 transitions. [2022-03-15 18:55:52,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:52,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:52,060 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:52,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:52,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:52,265 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:52,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2047446732, now seen corresponding path program 33 times [2022-03-15 18:55:52,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:52,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668995924] [2022-03-15 18:55:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:52,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:52,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:52,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668995924] [2022-03-15 18:55:52,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668995924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:52,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461273301] [2022-03-15 18:55:52,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:55:52,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:52,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:52,608 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:52,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 18:55:52,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 18:55:52,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:52,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:55:52,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:53,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:54,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461273301] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:54,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:54,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 30 [2022-03-15 18:55:54,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [511412796] [2022-03-15 18:55:54,339 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:54,341 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:54,344 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2022-03-15 18:55:54,345 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:55,364 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [18261#(and (or (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 18262#(and (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (<= ~pos~0 0)) (or (= ~g2~0 1) (not (= (mod ~g1~0 256) 0)) (< 0 (+ ~pos~0 1)))), 18263#(and (or (<= ~pos~0 2) (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod ~g2~0 256) 0) (not (= (mod ~d2~0 256) 0)) (< 1 ~pos~0))), 18209#(or (not (<= (mod ~g2~0 256) 0)) (and (<= ~pos~0 0) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:55:55,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 18:55:55,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 18:55:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 18:55:55,365 INFO L87 Difference]: Start difference. First operand 264 states and 672 transitions. Second operand has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:56,573 INFO L93 Difference]: Finished difference Result 421 states and 1042 transitions. [2022-03-15 18:55:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 18:55:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:55:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:56,575 INFO L225 Difference]: With dead ends: 421 [2022-03-15 18:55:56,575 INFO L226 Difference]: Without dead ends: 416 [2022-03-15 18:55:56,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=470, Invalid=1980, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 18:55:56,576 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:56,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:55:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-03-15 18:55:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 296. [2022-03-15 18:55:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.552542372881356) internal successors, (753), 295 states have internal predecessors, (753), 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 18:55:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 753 transitions. [2022-03-15 18:55:56,581 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 753 transitions. Word has length 19 [2022-03-15 18:55:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:56,581 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 753 transitions. [2022-03-15 18:55:56,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 753 transitions. [2022-03-15 18:55:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:55:56,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:56,582 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:56,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:56,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-15 18:55:56,789 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:55:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:56,790 INFO L85 PathProgramCache]: Analyzing trace with hash 175882612, now seen corresponding path program 34 times [2022-03-15 18:55:56,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:56,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051367978] [2022-03-15 18:55:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:56,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:57,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:57,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051367978] [2022-03-15 18:55:57,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051367978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:57,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871016954] [2022-03-15 18:55:57,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:55:57,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:57,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:57,113 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:55:57,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 18:55:57,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:55:57,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:57,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 18:55:57,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:57,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:58,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871016954] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:58,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:58,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2022-03-15 18:55:58,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1445742928] [2022-03-15 18:55:58,595 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:58,597 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:58,601 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 62 transitions. [2022-03-15 18:55:58,601 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:59,763 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [19448#(and (or (<= (div ~d1~0 256) 0) (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (<= 1 ~d1~0)) (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0) (<= 1 ~d1~0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (= ~g1~0 0)) (or (<= (div ~d1~0 256) 0) (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0))), 19447#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (< 0 (+ ~pos~0 1)))), 19446#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:55:59,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:55:59,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:55:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:55:59,764 INFO L87 Difference]: Start difference. First operand 296 states and 753 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:56:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:56:00,880 INFO L93 Difference]: Finished difference Result 370 states and 924 transitions. [2022-03-15 18:56:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 18:56:00,881 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:56:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:56:00,882 INFO L225 Difference]: With dead ends: 370 [2022-03-15 18:56:00,882 INFO L226 Difference]: Without dead ends: 354 [2022-03-15 18:56:00,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=536, Invalid=1720, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 18:56:00,882 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:56:00,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:56:00,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-15 18:56:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 296. [2022-03-15 18:56:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.552542372881356) internal successors, (753), 295 states have internal predecessors, (753), 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 18:56:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 753 transitions. [2022-03-15 18:56:00,887 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 753 transitions. Word has length 19 [2022-03-15 18:56:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:56:00,887 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 753 transitions. [2022-03-15 18:56:00,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:56:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 753 transitions. [2022-03-15 18:56:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:56:00,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:56:00,888 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:56:00,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 18:56:01,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-15 18:56:01,103 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:56:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:56:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2129459956, now seen corresponding path program 35 times [2022-03-15 18:56:01,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:56:01,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863397876] [2022-03-15 18:56:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:56:01,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:56:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:56:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:56:01,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:56:01,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863397876] [2022-03-15 18:56:01,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863397876] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:56:01,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118847817] [2022-03-15 18:56:01,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:56:01,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:56:01,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:56:01,467 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:56:01,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 18:56:01,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 18:56:01,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:56:01,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 18:56:01,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:56:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:56:02,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:56:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:56:03,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118847817] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:56:03,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:56:03,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 28 [2022-03-15 18:56:03,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [239729132] [2022-03-15 18:56:03,247 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:56:03,248 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:56:03,252 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 62 transitions. [2022-03-15 18:56:03,253 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:56:04,257 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [20579#(and (or (<= 1 ~pos~0) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (<= ~pos~0 1) (not (= (mod ~g2~0 256) 0)) (= ~g1~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (= ~g1~0 0))), 20578#(and (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (= ~g1~0 1) (< 0 (+ ~pos~0 1)))), 20577#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:56:04,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:56:04,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:56:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:56:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 18:56:04,258 INFO L87 Difference]: Start difference. First operand 296 states and 753 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 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 18:56:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:56:05,687 INFO L93 Difference]: Finished difference Result 494 states and 1229 transitions. [2022-03-15 18:56:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 18:56:05,687 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:56:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:56:05,689 INFO L225 Difference]: With dead ends: 494 [2022-03-15 18:56:05,689 INFO L226 Difference]: Without dead ends: 472 [2022-03-15 18:56:05,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 14 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=604, Invalid=2366, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 18:56:05,690 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:56:05,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:56:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-15 18:56:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 336. [2022-03-15 18:56:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.564179104477612) internal successors, (859), 335 states have internal predecessors, (859), 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 18:56:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 859 transitions. [2022-03-15 18:56:05,695 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 859 transitions. Word has length 19 [2022-03-15 18:56:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:56:05,695 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 859 transitions. [2022-03-15 18:56:05,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 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 18:56:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 859 transitions. [2022-03-15 18:56:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 18:56:05,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:56:05,696 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:56:05,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 18:56:05,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-15 18:56:05,911 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:56:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:56:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1501899262, now seen corresponding path program 36 times [2022-03-15 18:56:05,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:56:05,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869418518] [2022-03-15 18:56:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:56:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:56:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:56:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:56:06,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:56:06,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869418518] [2022-03-15 18:56:06,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869418518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:56:06,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041311428] [2022-03-15 18:56:06,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:56:06,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:56:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:56:06,220 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:56:06,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 18:56:06,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 18:56:06,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:56:06,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:56:06,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:56:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:56:06,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:56:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:56:07,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041311428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:56:07,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:56:07,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 27 [2022-03-15 18:56:07,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [740224939] [2022-03-15 18:56:07,879 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:56:07,880 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:56:07,884 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2022-03-15 18:56:07,884 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:56:08,506 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [21927#(and (or (not (= (mod ~g2~0 256) 0)) (<= ~pos~0 0)) (or (not (= (mod ~g2~0 256) 0)) (< 0 (+ ~pos~0 1))))] [2022-03-15 18:56:08,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 18:56:08,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:56:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 18:56:08,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=648, Unknown=0, NotChecked=0, Total=870 [2022-03-15 18:56:08,507 INFO L87 Difference]: Start difference. First operand 336 states and 859 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:56:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:56:08,855 INFO L93 Difference]: Finished difference Result 424 states and 1079 transitions. [2022-03-15 18:56:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 18:56:08,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 18:56:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:56:08,855 INFO L225 Difference]: With dead ends: 424 [2022-03-15 18:56:08,856 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 18:56:08,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 18:56:08,856 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:56:08,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:56:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 18:56:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 18:56:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 18:56:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 18:56:08,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-03-15 18:56:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:56:08,857 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 18:56:08,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:56:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 18:56:08,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 18:56:08,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 18:56:08,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 18:56:08,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 18:56:08,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 18:56:09,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:56:09,072 INFO L732 BasicCegarLoop]: Path program histogram: [36, 1, 1] [2022-03-15 18:56:09,073 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 18:56:09,073 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 18:56:09,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 06:56:09 BasicIcfg [2022-03-15 18:56:09,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 18:56:09,075 INFO L158 Benchmark]: Toolchain (without parser) took 112591.80ms. Allocated memory was 202.4MB in the beginning and 471.9MB in the end (delta: 269.5MB). Free memory was 151.6MB in the beginning and 317.7MB in the end (delta: -166.1MB). Peak memory consumption was 103.0MB. Max. memory is 8.0GB. [2022-03-15 18:56:09,075 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 167.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 18:56:09,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.39ms. Allocated memory is still 202.4MB. Free memory was 151.4MB in the beginning and 177.5MB in the end (delta: -26.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-15 18:56:09,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.74ms. Allocated memory is still 202.4MB. Free memory was 177.5MB in the beginning and 175.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 18:56:09,075 INFO L158 Benchmark]: Boogie Preprocessor took 28.21ms. Allocated memory is still 202.4MB. Free memory was 175.7MB in the beginning and 174.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 18:56:09,076 INFO L158 Benchmark]: RCFGBuilder took 330.24ms. Allocated memory is still 202.4MB. Free memory was 174.3MB in the beginning and 161.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 18:56:09,076 INFO L158 Benchmark]: TraceAbstraction took 111945.64ms. Allocated memory was 202.4MB in the beginning and 471.9MB in the end (delta: 269.5MB). Free memory was 161.2MB in the beginning and 317.7MB in the end (delta: -156.5MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. [2022-03-15 18:56:09,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 167.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.39ms. Allocated memory is still 202.4MB. Free memory was 151.4MB in the beginning and 177.5MB in the end (delta: -26.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.74ms. Allocated memory is still 202.4MB. Free memory was 177.5MB in the beginning and 175.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.21ms. Allocated memory is still 202.4MB. Free memory was 175.7MB in the beginning and 174.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 330.24ms. Allocated memory is still 202.4MB. Free memory was 174.3MB in the beginning and 161.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 111945.64ms. Allocated memory was 202.4MB in the beginning and 471.9MB in the end (delta: 269.5MB). Free memory was 161.2MB in the beginning and 317.7MB in the end (delta: -156.5MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 91 PlacesBefore, 21 PlacesAfterwards, 95 TransitionsBefore, 16 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 93 TotalNumberOfCompositions, 1090 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1031, positive: 1023, positive conditional: 0, positive unconditional: 1023, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 583, positive: 578, positive conditional: 0, positive unconditional: 578, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1031, positive: 445, positive conditional: 0, positive unconditional: 445, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 583, unknown conditional: 0, unknown unconditional: 583] , 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 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 111.8s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2437 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2437 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4135 mSDsCounter, 1211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8625 IncrementalHoareTripleChecker+Invalid, 9836 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1211 mSolverCounterUnsat, 0 mSDtfsCounter, 8625 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2408 GetRequests, 815 SyntacticMatches, 385 SemanticMatches, 1208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17846 ImplicationChecksByTransitivity, 30.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=37, InterpolantAutomatonStates: 597, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 38 MinimizatonAttempts, 2018 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 47.3s InterpolantComputationTime, 1249 NumberOfCodeBlocks, 1249 NumberOfCodeBlocksAsserted, 131 NumberOfCheckSat, 1752 ConstructedInterpolants, 0 QuantifiedInterpolants, 33990 SizeOfPredicates, 391 NumberOfNonLiveVariables, 4177 ConjunctsInSsa, 702 ConjunctsInUnsatCore, 110 InterpolantComputations, 2 PerfectInterpolantSequences, 50/1438 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 18:56:09,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...