/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-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:54:31,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:54:31,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:54:31,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:54:31,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:54:31,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:54:31,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:54:31,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:54:31,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:54:31,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:54:31,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:54:31,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:54:31,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:54:31,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:54:31,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:54:31,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:54:31,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:54:32,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:54:32,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:54:32,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:54:32,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:54:32,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:54:32,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:54:32,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:54:32,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 18:54:32,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 18:54:32,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 18:54:32,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 18:54:32,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 18:54:32,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 18:54:32,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 18:54:32,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 18:54:32,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 18:54:32,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 18:54:32,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 18:54:32,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 18:54:32,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 18:54:32,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 18:54:32,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:54:32,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:54:32,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:54:32,014 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 18:54:32,026 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:54:32,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:54:32,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:54:32,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:54:32,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:54:32,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:54:32,028 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:54:32,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:54:32,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:54:32,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:54:32,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:54:32,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:54:32,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:54:32,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:54:32,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:54:32,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:54:32,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:54:32,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:54:32,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:54:32,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:54:32,030 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:54:32,030 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:54:32,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:54:32,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:54:32,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:54:32,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:54:32,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:54:32,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:54:32,214 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:54:32,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-03-15 18:54:32,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cfbd77ea/a17870a000de4cd68a04c786062c5b66/FLAGb0f366256 [2022-03-15 18:54:32,651 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:54:32,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-03-15 18:54:32,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cfbd77ea/a17870a000de4cd68a04c786062c5b66/FLAGb0f366256 [2022-03-15 18:54:32,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cfbd77ea/a17870a000de4cd68a04c786062c5b66 [2022-03-15 18:54:32,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:54:32,695 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:54:32,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:54:32,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:54:32,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:54:32,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2413789a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32, skipping insertion in model container [2022-03-15 18:54:32,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:54:32,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:54:32,881 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-4.wvr.c[2950,2963] [2022-03-15 18:54:32,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:54:32,888 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:54:32,918 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-4.wvr.c[2950,2963] [2022-03-15 18:54:32,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:54:32,926 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:54:32,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32 WrapperNode [2022-03-15 18:54:32,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:54:32,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:54:32,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:54:32,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:54:32,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,955 INFO L137 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-03-15 18:54:32,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:54:32,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:54:32,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:54:32,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:54:32,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:32,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:54:32,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:54:32,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:54:32,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:54:32,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (1/1) ... [2022-03-15 18:54:33,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:54:33,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:33,033 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 18:54:33,035 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 18:54:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:54:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 18:54:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 18:54:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 18:54:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 18:54:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 18:54:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 18:54:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:54:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:54:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:54:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 18:54:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 18:54:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:54:33,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:54:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 18:54:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:54:33,065 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 18:54:33,162 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:54:33,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:54:33,308 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:54:33,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:54:33,323 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 18:54:33,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:54:33 BoogieIcfgContainer [2022-03-15 18:54:33,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:54:33,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:54:33,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:54:33,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:54:33,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:54:32" (1/3) ... [2022-03-15 18:54:33,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8cd03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:54:33, skipping insertion in model container [2022-03-15 18:54:33,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:54:32" (2/3) ... [2022-03-15 18:54:33,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8cd03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:54:33, skipping insertion in model container [2022-03-15 18:54:33,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:54:33" (3/3) ... [2022-03-15 18:54:33,330 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-03-15 18:54:33,333 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:54:33,333 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:54:33,333 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 18:54:33,334 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:54:33,358 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,358 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,359 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,359 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,359 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,359 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,362 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,362 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,362 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,362 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,362 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,362 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,364 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,364 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,368 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,369 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:54:33,373 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 18:54:33,413 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:54:33,417 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 18:54:33,418 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 18:54:33,426 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:54:33,431 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 105 transitions, 234 flow [2022-03-15 18:54:33,432 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 105 transitions, 234 flow [2022-03-15 18:54:33,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 234 flow [2022-03-15 18:54:33,468 INFO L129 PetriNetUnfolder]: 7/102 cut-off events. [2022-03-15 18:54:33,468 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-03-15 18:54:33,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 7/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-03-15 18:54:33,473 INFO L116 LiptonReduction]: Number of co-enabled transitions 1134 [2022-03-15 18:54:35,931 INFO L131 LiptonReduction]: Checked pairs total: 1929 [2022-03-15 18:54:35,931 INFO L133 LiptonReduction]: Total number of compositions: 92 [2022-03-15 18:54:35,939 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 26 transitions, 76 flow [2022-03-15 18:54:35,975 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 128 states, 127 states have (on average 2.7874015748031495) internal successors, (354), 127 states have internal predecessors, (354), 0 states have call successors, (0), 0 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 18:54:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 127 states have (on average 2.7874015748031495) internal successors, (354), 127 states have internal predecessors, (354), 0 states have call successors, (0), 0 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 18:54:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 18:54:35,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:35,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:35,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1252219923, now seen corresponding path program 1 times [2022-03-15 18:54:36,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:36,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635076677] [2022-03-15 18:54:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:36,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:36,302 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 18:54:36,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:36,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635076677] [2022-03-15 18:54:36,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635076677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:54:36,303 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:54:36,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:54:36,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [148651994] [2022-03-15 18:54:36,305 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:36,309 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:36,327 INFO L252 McrAutomatonBuilder]: Finished intersection with 68 states and 135 transitions. [2022-03-15 18:54:36,328 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:36,708 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [372#(not (= (mod ~v_assert~0 256) 0)), 371#(not (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))] [2022-03-15 18:54:36,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 18:54:36,710 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 18:54:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-15 18:54:36,746 INFO L87 Difference]: Start difference. First operand has 128 states, 127 states have (on average 2.7874015748031495) internal successors, (354), 127 states have internal predecessors, (354), 0 states have call successors, (0), 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 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 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 18:54:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:36,854 INFO L93 Difference]: Finished difference Result 108 states and 290 transitions. [2022-03-15 18:54:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:54:36,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 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 18 [2022-03-15 18:54:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:36,861 INFO L225 Difference]: With dead ends: 108 [2022-03-15 18:54:36,862 INFO L226 Difference]: Without dead ends: 108 [2022-03-15 18:54:36,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 18:54:36,864 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:36,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-15 18:54:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-03-15 18:54:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.710280373831776) internal successors, (290), 107 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 18:54:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 290 transitions. [2022-03-15 18:54:36,890 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 290 transitions. Word has length 18 [2022-03-15 18:54:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:36,891 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 290 transitions. [2022-03-15 18:54:36,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 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 18:54:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 290 transitions. [2022-03-15 18:54:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 18:54:36,892 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:36,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:36,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:54:36,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1583599635, now seen corresponding path program 2 times [2022-03-15 18:54:36,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:36,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516726125] [2022-03-15 18:54:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:36,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:36,976 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 18:54:36,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:36,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516726125] [2022-03-15 18:54:36,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516726125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:54:36,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:54:36,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:54:36,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [614467165] [2022-03-15 18:54:36,978 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:36,980 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:36,984 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 55 transitions. [2022-03-15 18:54:36,985 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:37,124 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [703#(<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)] [2022-03-15 18:54:37,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:54:37,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:54:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 18:54:37,126 INFO L87 Difference]: Start difference. First operand 108 states and 290 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:37,191 INFO L93 Difference]: Finished difference Result 108 states and 280 transitions. [2022-03-15 18:54:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:54:37,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 18:54:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:37,193 INFO L225 Difference]: With dead ends: 108 [2022-03-15 18:54:37,193 INFO L226 Difference]: Without dead ends: 108 [2022-03-15 18:54:37,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 9 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-15 18:54:37,194 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:37,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:54:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-15 18:54:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-03-15 18:54:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.616822429906542) internal successors, (280), 107 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 18:54:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 280 transitions. [2022-03-15 18:54:37,216 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 280 transitions. Word has length 18 [2022-03-15 18:54:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:37,217 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 280 transitions. [2022-03-15 18:54:37,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 280 transitions. [2022-03-15 18:54:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 18:54:37,218 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:37,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:37,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:54:37,218 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1060889309, now seen corresponding path program 3 times [2022-03-15 18:54:37,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:37,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098560826] [2022-03-15 18:54:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:37,289 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 18:54:37,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:37,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098560826] [2022-03-15 18:54:37,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098560826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:54:37,290 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:54:37,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 18:54:37,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [870711073] [2022-03-15 18:54:37,290 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:37,291 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:37,294 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 56 transitions. [2022-03-15 18:54:37,294 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:37,407 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1035#(not (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0)), 1036#(not (= (mod ~v_assert~0 256) 0))] [2022-03-15 18:54:37,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:54:37,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:37,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:54:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 18:54:37,409 INFO L87 Difference]: Start difference. First operand 108 states and 280 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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 18:54:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:37,564 INFO L93 Difference]: Finished difference Result 186 states and 483 transitions. [2022-03-15 18:54:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 18:54:37,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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 18 [2022-03-15 18:54:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:37,565 INFO L225 Difference]: With dead ends: 186 [2022-03-15 18:54:37,565 INFO L226 Difference]: Without dead ends: 120 [2022-03-15 18:54:37,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:54:37,566 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:37,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-03-15 18:54:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-03-15 18:54:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.6050420168067228) internal successors, (310), 119 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 18:54:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 310 transitions. [2022-03-15 18:54:37,571 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 310 transitions. Word has length 18 [2022-03-15 18:54:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:37,571 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 310 transitions. [2022-03-15 18:54:37,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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 18:54:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 310 transitions. [2022-03-15 18:54:37,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 18:54:37,572 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:37,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:37,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 18:54:37,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1326088171, now seen corresponding path program 1 times [2022-03-15 18:54:37,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:37,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937906442] [2022-03-15 18:54:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:37,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:37,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:37,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937906442] [2022-03-15 18:54:37,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937906442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:54:37,676 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:54:37,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 18:54:37,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [497852785] [2022-03-15 18:54:37,676 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:37,678 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:37,682 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 78 transitions. [2022-03-15 18:54:37,683 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:37,820 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1486#(not (= (mod ~v_assert~0 256) 0)), 1485#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:54:37,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:54:37,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:37,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:54:37,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:54:37,821 INFO L87 Difference]: Start difference. First operand 120 states and 310 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 18:54:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:38,075 INFO L93 Difference]: Finished difference Result 216 states and 552 transitions. [2022-03-15 18:54:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:54:38,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 20 [2022-03-15 18:54:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:38,076 INFO L225 Difference]: With dead ends: 216 [2022-03-15 18:54:38,076 INFO L226 Difference]: Without dead ends: 140 [2022-03-15 18:54:38,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:38,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:38,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-03-15 18:54:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-03-15 18:54:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.6043165467625897) internal successors, (362), 139 states have internal predecessors, (362), 0 states have call successors, (0), 0 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 18:54:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2022-03-15 18:54:38,083 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 20 [2022-03-15 18:54:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:38,083 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2022-03-15 18:54:38,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 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 18:54:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2022-03-15 18:54:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 18:54:38,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:38,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:38,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 18:54:38,084 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -450588196, now seen corresponding path program 1 times [2022-03-15 18:54:38,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:38,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195227277] [2022-03-15 18:54:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:38,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:38,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195227277] [2022-03-15 18:54:38,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195227277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:54:38,168 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:54:38,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 18:54:38,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [990809635] [2022-03-15 18:54:38,170 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:38,172 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:38,176 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 70 transitions. [2022-03-15 18:54:38,177 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:38,400 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2010#(not (= (mod ~v_assert~0 256) 0)), 2009#(not (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))] [2022-03-15 18:54:38,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:54:38,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:54:38,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:54:38,401 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 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 18:54:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:38,641 INFO L93 Difference]: Finished difference Result 216 states and 564 transitions. [2022-03-15 18:54:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:54:38,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 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 20 [2022-03-15 18:54:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:38,643 INFO L225 Difference]: With dead ends: 216 [2022-03-15 18:54:38,643 INFO L226 Difference]: Without dead ends: 156 [2022-03-15 18:54:38,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:38,644 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:38,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-15 18:54:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2022-03-15 18:54:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.615894039735099) internal successors, (395), 151 states have internal predecessors, (395), 0 states have call successors, (0), 0 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 18:54:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 395 transitions. [2022-03-15 18:54:38,655 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 395 transitions. Word has length 20 [2022-03-15 18:54:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:38,655 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 395 transitions. [2022-03-15 18:54:38,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 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 18:54:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 395 transitions. [2022-03-15 18:54:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 18:54:38,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:38,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:38,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 18:54:38,656 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1999448220, now seen corresponding path program 1 times [2022-03-15 18:54:38,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:38,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777650753] [2022-03-15 18:54:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:38,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:38,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:38,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777650753] [2022-03-15 18:54:38,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777650753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:38,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195290429] [2022-03-15 18:54:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:38,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:38,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:38,751 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 18:54:38,796 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 18:54:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:38,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:54:38,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:39,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:39,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195290429] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:39,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:39,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2022-03-15 18:54:39,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1300551675] [2022-03-15 18:54:39,466 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:39,469 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:39,476 INFO L252 McrAutomatonBuilder]: Finished intersection with 62 states and 110 transitions. [2022-03-15 18:54:39,477 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:39,997 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2657#(not (<= (mod ~v_assert~0 256) 0)), 2653#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:54:39,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 18:54:39,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 18:54:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:39,998 INFO L87 Difference]: Start difference. First operand 152 states and 395 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 18:54:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:40,201 INFO L93 Difference]: Finished difference Result 240 states and 621 transitions. [2022-03-15 18:54:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 18:54:40,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 18:54:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:40,202 INFO L225 Difference]: With dead ends: 240 [2022-03-15 18:54:40,202 INFO L226 Difference]: Without dead ends: 172 [2022-03-15 18:54:40,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-03-15 18:54:40,203 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:40,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:40,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-03-15 18:54:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 164. [2022-03-15 18:54:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.625766871165644) internal successors, (428), 163 states have internal predecessors, (428), 0 states have call successors, (0), 0 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 18:54:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 428 transitions. [2022-03-15 18:54:40,207 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 428 transitions. Word has length 22 [2022-03-15 18:54:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:40,207 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 428 transitions. [2022-03-15 18:54:40,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 18:54:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 428 transitions. [2022-03-15 18:54:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 18:54:40,208 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:40,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:40,245 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 18:54:40,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-15 18:54:40,423 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1873033350, now seen corresponding path program 2 times [2022-03-15 18:54:40,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:40,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695924342] [2022-03-15 18:54:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:40,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:40,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695924342] [2022-03-15 18:54:40,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695924342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:40,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809340457] [2022-03-15 18:54:40,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:54:40,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:40,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:40,512 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 18:54:40,551 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 18:54:40,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:54:40,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:40,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 18:54:40,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:40,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:41,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809340457] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:41,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:41,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-03-15 18:54:41,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [167154578] [2022-03-15 18:54:41,024 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:41,026 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:41,033 INFO L252 McrAutomatonBuilder]: Finished intersection with 64 states and 114 transitions. [2022-03-15 18:54:41,033 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:41,479 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3423#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 3380#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:54:41,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 18:54:41,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 18:54:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-03-15 18:54:41,480 INFO L87 Difference]: Start difference. First operand 164 states and 428 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:41,833 INFO L93 Difference]: Finished difference Result 256 states and 665 transitions. [2022-03-15 18:54:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 18:54:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 18:54:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:41,835 INFO L225 Difference]: With dead ends: 256 [2022-03-15 18:54:41,835 INFO L226 Difference]: Without dead ends: 188 [2022-03-15 18:54:41,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-03-15 18:54:41,836 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:41,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-03-15 18:54:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 172. [2022-03-15 18:54:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.6315789473684212) internal successors, (450), 171 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 18:54:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 450 transitions. [2022-03-15 18:54:41,839 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 450 transitions. Word has length 22 [2022-03-15 18:54:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:41,839 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 450 transitions. [2022-03-15 18:54:41,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 450 transitions. [2022-03-15 18:54:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 18:54:41,840 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:41,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:41,873 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 18:54:42,056 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,SelfDestructingSolverStorable6 [2022-03-15 18:54:42,057 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:42,057 INFO L85 PathProgramCache]: Analyzing trace with hash 297816493, now seen corresponding path program 2 times [2022-03-15 18:54:42,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:42,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015926959] [2022-03-15 18:54:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:42,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:42,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:42,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015926959] [2022-03-15 18:54:42,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015926959] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:42,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037994248] [2022-03-15 18:54:42,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:54:42,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:42,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:42,134 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 18:54:42,168 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 18:54:42,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:54:42,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:42,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 18:54:42,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:42,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:42,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037994248] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:42,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:42,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-03-15 18:54:42,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [816824795] [2022-03-15 18:54:42,434 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:42,436 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:42,442 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 100 transitions. [2022-03-15 18:54:42,442 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:42,844 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4184#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 4142#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:54:42,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 18:54:42,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 18:54:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:54:42,847 INFO L87 Difference]: Start difference. First operand 172 states and 450 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 18:54:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:43,276 INFO L93 Difference]: Finished difference Result 354 states and 893 transitions. [2022-03-15 18:54:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 18:54:43,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 18:54:43,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:43,278 INFO L225 Difference]: With dead ends: 354 [2022-03-15 18:54:43,278 INFO L226 Difference]: Without dead ends: 270 [2022-03-15 18:54:43,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 53 SyntacticMatches, 19 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2022-03-15 18:54:43,280 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:43,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:54:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-15 18:54:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 200. [2022-03-15 18:54:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.6532663316582914) internal successors, (528), 199 states have internal predecessors, (528), 0 states have call successors, (0), 0 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 18:54:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 528 transitions. [2022-03-15 18:54:43,284 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 528 transitions. Word has length 22 [2022-03-15 18:54:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:43,284 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 528 transitions. [2022-03-15 18:54:43,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 18:54:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 528 transitions. [2022-03-15 18:54:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 18:54:43,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:43,285 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:43,317 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 18:54:43,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:43,486 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:43,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -888069109, now seen corresponding path program 2 times [2022-03-15 18:54:43,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:43,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442863935] [2022-03-15 18:54:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:43,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:43,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442863935] [2022-03-15 18:54:43,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442863935] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:43,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486613616] [2022-03-15 18:54:43,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:54:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:43,581 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 18:54:43,582 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 18:54:43,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:54:43,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:43,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 18:54:43,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:43,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:43,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486613616] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:43,882 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:43,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 13 [2022-03-15 18:54:43,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1686808157] [2022-03-15 18:54:43,882 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:43,884 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:43,889 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 84 transitions. [2022-03-15 18:54:43,889 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:44,132 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [5066#(not (<= (mod ~v_assert~0 256) 0)), 5113#(not (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))] [2022-03-15 18:54:44,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 18:54:44,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:44,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 18:54:44,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:54:44,133 INFO L87 Difference]: Start difference. First operand 200 states and 528 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 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 18:54:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:44,401 INFO L93 Difference]: Finished difference Result 292 states and 774 transitions. [2022-03-15 18:54:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 18:54:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 18:54:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:44,403 INFO L225 Difference]: With dead ends: 292 [2022-03-15 18:54:44,403 INFO L226 Difference]: Without dead ends: 232 [2022-03-15 18:54:44,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2022-03-15 18:54:44,404 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:44,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-03-15 18:54:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 208. [2022-03-15 18:54:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.657004830917874) internal successors, (550), 207 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 550 transitions. [2022-03-15 18:54:44,410 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 550 transitions. Word has length 22 [2022-03-15 18:54:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:44,410 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 550 transitions. [2022-03-15 18:54:44,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 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 18:54:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 550 transitions. [2022-03-15 18:54:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 18:54:44,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:44,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:44,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:44,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:44,623 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1910847509, now seen corresponding path program 3 times [2022-03-15 18:54:44,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:44,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054085790] [2022-03-15 18:54:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:44,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:44,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054085790] [2022-03-15 18:54:44,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054085790] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:44,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397186693] [2022-03-15 18:54:44,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:54:44,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:44,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:44,758 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 18:54:44,764 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 18:54:44,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:54:44,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:44,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:54:44,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:45,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:45,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397186693] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:45,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:45,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-03-15 18:54:45,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [364069751] [2022-03-15 18:54:45,319 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:45,321 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:45,329 INFO L252 McrAutomatonBuilder]: Finished intersection with 78 states and 146 transitions. [2022-03-15 18:54:45,329 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:46,108 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [5953#(not (<= (mod ~v_assert~0 256) 0)), 6003#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:54:46,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:46,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:46,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-03-15 18:54:46,109 INFO L87 Difference]: Start difference. First operand 208 states and 550 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:46,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:46,385 INFO L93 Difference]: Finished difference Result 316 states and 831 transitions. [2022-03-15 18:54:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:54:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 18:54:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:46,386 INFO L225 Difference]: With dead ends: 316 [2022-03-15 18:54:46,386 INFO L226 Difference]: Without dead ends: 248 [2022-03-15 18:54:46,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2022-03-15 18:54:46,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:46,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-03-15 18:54:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 216. [2022-03-15 18:54:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.66046511627907) internal successors, (572), 215 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 18:54:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 572 transitions. [2022-03-15 18:54:46,392 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 572 transitions. Word has length 24 [2022-03-15 18:54:46,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:46,392 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 572 transitions. [2022-03-15 18:54:46,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:46,392 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 572 transitions. [2022-03-15 18:54:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 18:54:46,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:46,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:46,409 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 18:54:46,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 18:54:46,608 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1488361783, now seen corresponding path program 4 times [2022-03-15 18:54:46,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:46,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560688362] [2022-03-15 18:54:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:46,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:46,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:46,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560688362] [2022-03-15 18:54:46,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560688362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:46,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811289467] [2022-03-15 18:54:46,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:54:46,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:46,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:46,710 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 18:54:46,711 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 18:54:46,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:54:46,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:46,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 18:54:46,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:46,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:47,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811289467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:47,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:47,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2022-03-15 18:54:47,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [739628295] [2022-03-15 18:54:47,312 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:47,314 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:47,322 INFO L252 McrAutomatonBuilder]: Finished intersection with 78 states and 146 transitions. [2022-03-15 18:54:47,322 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:48,130 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [6882#(not (<= (mod ~v_assert~0 256) 0)), 6932#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:54:48,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:48,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-03-15 18:54:48,131 INFO L87 Difference]: Start difference. First operand 216 states and 572 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:48,428 INFO L93 Difference]: Finished difference Result 316 states and 831 transitions. [2022-03-15 18:54:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:54:48,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 18:54:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:48,430 INFO L225 Difference]: With dead ends: 316 [2022-03-15 18:54:48,430 INFO L226 Difference]: Without dead ends: 248 [2022-03-15 18:54:48,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2022-03-15 18:54:48,431 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:48,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-03-15 18:54:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 232. [2022-03-15 18:54:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.6666666666666665) internal successors, (616), 231 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 18:54:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 616 transitions. [2022-03-15 18:54:48,435 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 616 transitions. Word has length 24 [2022-03-15 18:54:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:48,435 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 616 transitions. [2022-03-15 18:54:48,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 616 transitions. [2022-03-15 18:54:48,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 18:54:48,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:48,436 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:48,472 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 18:54:48,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:48,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1010386571, now seen corresponding path program 5 times [2022-03-15 18:54:48,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:48,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878671091] [2022-03-15 18:54:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:48,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:48,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878671091] [2022-03-15 18:54:48,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878671091] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:48,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658848590] [2022-03-15 18:54:48,721 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:54:48,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:48,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:48,740 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 18:54:48,740 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 18:54:48,793 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 18:54:48,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 18:54:48,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:48,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:49,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658848590] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:49,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:49,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2022-03-15 18:54:49,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2097528602] [2022-03-15 18:54:49,393 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:49,395 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:49,402 INFO L252 McrAutomatonBuilder]: Finished intersection with 72 states and 128 transitions. [2022-03-15 18:54:49,402 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:49,894 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7846#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 7850#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:54:49,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:49,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:49,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:49,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:54:49,896 INFO L87 Difference]: Start difference. First operand 232 states and 616 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 18:54:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:50,154 INFO L93 Difference]: Finished difference Result 332 states and 875 transitions. [2022-03-15 18:54:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:54:50,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 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 24 [2022-03-15 18:54:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:50,156 INFO L225 Difference]: With dead ends: 332 [2022-03-15 18:54:50,156 INFO L226 Difference]: Without dead ends: 264 [2022-03-15 18:54:50,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 67 SyntacticMatches, 12 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:54:50,157 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:50,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-03-15 18:54:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 232. [2022-03-15 18:54:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.6666666666666665) internal successors, (616), 231 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 18:54:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 616 transitions. [2022-03-15 18:54:50,175 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 616 transitions. Word has length 24 [2022-03-15 18:54:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:50,175 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 616 transitions. [2022-03-15 18:54:50,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 18:54:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 616 transitions. [2022-03-15 18:54:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 18:54:50,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:50,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:50,197 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 18:54:50,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:50,380 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 472682500, now seen corresponding path program 6 times [2022-03-15 18:54:50,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:50,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366489822] [2022-03-15 18:54:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:50,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:50,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366489822] [2022-03-15 18:54:50,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366489822] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:50,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143405756] [2022-03-15 18:54:50,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:54:50,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:50,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:50,474 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 18:54:50,475 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 18:54:50,541 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 18:54:50,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:50,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 18:54:50,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:50,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:50,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143405756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:50,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:50,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-03-15 18:54:50,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [984145764] [2022-03-15 18:54:50,969 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:50,971 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:51,000 INFO L252 McrAutomatonBuilder]: Finished intersection with 84 states and 158 transitions. [2022-03-15 18:54:51,001 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:51,659 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [8869#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 8821#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:54:51,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:51,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:51,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:51,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:51,660 INFO L87 Difference]: Start difference. First operand 232 states and 616 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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 18:54:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:51,937 INFO L93 Difference]: Finished difference Result 352 states and 927 transitions. [2022-03-15 18:54:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 18:54:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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) Word has length 24 [2022-03-15 18:54:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:51,939 INFO L225 Difference]: With dead ends: 352 [2022-03-15 18:54:51,939 INFO L226 Difference]: Without dead ends: 284 [2022-03-15 18:54:51,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2022-03-15 18:54:51,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:51,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:54:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-03-15 18:54:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 252. [2022-03-15 18:54:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.6613545816733066) internal successors, (668), 251 states have internal predecessors, (668), 0 states have call successors, (0), 0 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 18:54:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 668 transitions. [2022-03-15 18:54:51,945 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 668 transitions. Word has length 24 [2022-03-15 18:54:51,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:51,945 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 668 transitions. [2022-03-15 18:54:51,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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 18:54:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 668 transitions. [2022-03-15 18:54:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 18:54:51,946 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:51,946 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:51,971 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 18:54:52,155 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,SelfDestructingSolverStorable12 [2022-03-15 18:54:52,156 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash -28787985, now seen corresponding path program 3 times [2022-03-15 18:54:52,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:52,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357001628] [2022-03-15 18:54:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:52,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:52,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:52,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357001628] [2022-03-15 18:54:52,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357001628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:52,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216131283] [2022-03-15 18:54:52,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:54:52,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:52,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:52,292 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 18:54:52,293 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 18:54:52,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 18:54:52,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:52,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:54:52,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:52,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:52,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216131283] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:52,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:52,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2022-03-15 18:54:52,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [216139248] [2022-03-15 18:54:52,746 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:52,748 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:52,759 INFO L252 McrAutomatonBuilder]: Finished intersection with 72 states and 122 transitions. [2022-03-15 18:54:52,759 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:53,302 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [9857#(not (<= (mod ~v_assert~0 256) 0)), 9906#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:54:53,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:53,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-03-15 18:54:53,303 INFO L87 Difference]: Start difference. First operand 252 states and 668 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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 18:54:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:53,756 INFO L93 Difference]: Finished difference Result 326 states and 845 transitions. [2022-03-15 18:54:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:54:53,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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) Word has length 24 [2022-03-15 18:54:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:53,757 INFO L225 Difference]: With dead ends: 326 [2022-03-15 18:54:53,757 INFO L226 Difference]: Without dead ends: 242 [2022-03-15 18:54:53,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 74 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 18:54:53,758 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:53,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:54:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-03-15 18:54:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 222. [2022-03-15 18:54:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.6425339366515836) internal successors, (584), 221 states have internal predecessors, (584), 0 states have call successors, (0), 0 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 18:54:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 584 transitions. [2022-03-15 18:54:53,763 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 584 transitions. Word has length 24 [2022-03-15 18:54:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:53,763 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 584 transitions. [2022-03-15 18:54:53,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 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 18:54:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 584 transitions. [2022-03-15 18:54:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 18:54:53,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:53,763 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:53,780 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 18:54:53,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 18:54:53,967 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash -400431494, now seen corresponding path program 3 times [2022-03-15 18:54:53,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:53,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106758762] [2022-03-15 18:54:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:53,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:54,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:54,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106758762] [2022-03-15 18:54:54,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106758762] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:54,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200357253] [2022-03-15 18:54:54,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:54:54,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:54,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:54,069 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 18:54:54,072 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 18:54:54,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 18:54:54,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:54,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:54:54,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:54,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:54:54,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200357253] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:54,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:54,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-03-15 18:54:54,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1864429388] [2022-03-15 18:54:54,471 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:54,473 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:54,478 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 98 transitions. [2022-03-15 18:54:54,479 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:54,840 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [10808#(not (<= (mod ~v_assert~0 256) 0)), 10862#(not (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))] [2022-03-15 18:54:54,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:54,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:54,840 INFO L87 Difference]: Start difference. First operand 222 states and 584 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 18:54:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:55,267 INFO L93 Difference]: Finished difference Result 380 states and 1013 transitions. [2022-03-15 18:54:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 18:54:55,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 24 [2022-03-15 18:54:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:55,269 INFO L225 Difference]: With dead ends: 380 [2022-03-15 18:54:55,269 INFO L226 Difference]: Without dead ends: 270 [2022-03-15 18:54:55,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 18:54:55,272 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:55,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-15 18:54:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 238. [2022-03-15 18:54:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.6413502109704643) internal successors, (626), 237 states have internal predecessors, (626), 0 states have call successors, (0), 0 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 18:54:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 626 transitions. [2022-03-15 18:54:55,277 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 626 transitions. Word has length 24 [2022-03-15 18:54:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:55,278 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 626 transitions. [2022-03-15 18:54:55,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 18:54:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 626 transitions. [2022-03-15 18:54:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:54:55,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:55,278 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:55,295 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 18:54:55,491 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,SelfDestructingSolverStorable14 [2022-03-15 18:54:55,491 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:55,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1186173352, now seen corresponding path program 7 times [2022-03-15 18:54:55,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:55,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800367662] [2022-03-15 18:54:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:55,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:55,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:55,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800367662] [2022-03-15 18:54:55,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800367662] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:55,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642501717] [2022-03-15 18:54:55,658 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:54:55,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:55,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:55,659 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 18:54:55,660 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 18:54:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:55,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:54:55,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:55,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:56,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642501717] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:56,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:56,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2022-03-15 18:54:56,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1912403425] [2022-03-15 18:54:56,432 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:56,434 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:56,444 INFO L252 McrAutomatonBuilder]: Finished intersection with 94 states and 182 transitions. [2022-03-15 18:54:56,444 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:57,516 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [11873#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 11877#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:54:57,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:54:57,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:57,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:54:57,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-03-15 18:54:57,517 INFO L87 Difference]: Start difference. First operand 238 states and 626 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:57,938 INFO L93 Difference]: Finished difference Result 426 states and 1121 transitions. [2022-03-15 18:54:57,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 18:54:57,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:54:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:57,940 INFO L225 Difference]: With dead ends: 426 [2022-03-15 18:54:57,940 INFO L226 Difference]: Without dead ends: 318 [2022-03-15 18:54:57,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 91 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 18:54:57,941 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:57,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:54:57,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-03-15 18:54:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 238. [2022-03-15 18:54:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.6413502109704643) internal successors, (626), 237 states have internal predecessors, (626), 0 states have call successors, (0), 0 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 18:54:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 626 transitions. [2022-03-15 18:54:57,946 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 626 transitions. Word has length 26 [2022-03-15 18:54:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:57,947 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 626 transitions. [2022-03-15 18:54:57,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:54:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 626 transitions. [2022-03-15 18:54:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:54:57,947 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:57,947 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:57,965 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 18:54:58,148 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,SelfDestructingSolverStorable15 [2022-03-15 18:54:58,148 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 324233367, now seen corresponding path program 8 times [2022-03-15 18:54:58,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:58,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22941595] [2022-03-15 18:54:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:58,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:54:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:58,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:54:58,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22941595] [2022-03-15 18:54:58,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22941595] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:54:58,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798490402] [2022-03-15 18:54:58,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:54:58,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:54:58,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:54:58,231 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 18:54:58,232 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 18:54:58,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:54:58,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:54:58,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:54:58,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:54:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:58,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:54:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:54:58,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798490402] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:54:58,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:54:58,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 17 [2022-03-15 18:54:58,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [122894162] [2022-03-15 18:54:58,665 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:54:58,667 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:54:58,676 INFO L252 McrAutomatonBuilder]: Finished intersection with 86 states and 160 transitions. [2022-03-15 18:54:58,677 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:54:59,260 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [12977#(not (<= (mod ~v_assert~0 256) 0)), 12973#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:54:59,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:54:59,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:54:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:54:59,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:54:59,261 INFO L87 Difference]: Start difference. First operand 238 states and 626 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 18:54:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:54:59,724 INFO L93 Difference]: Finished difference Result 564 states and 1463 transitions. [2022-03-15 18:54:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 18:54:59,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:54:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:54:59,726 INFO L225 Difference]: With dead ends: 564 [2022-03-15 18:54:59,726 INFO L226 Difference]: Without dead ends: 450 [2022-03-15 18:54:59,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 81 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1069, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 18:54:59,726 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:54:59,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:54:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-15 18:54:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 318. [2022-03-15 18:54:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.694006309148265) internal successors, (854), 317 states have internal predecessors, (854), 0 states have call successors, (0), 0 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 18:54:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 854 transitions. [2022-03-15 18:54:59,733 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 854 transitions. Word has length 26 [2022-03-15 18:54:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:54:59,733 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 854 transitions. [2022-03-15 18:54:59,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 18:54:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 854 transitions. [2022-03-15 18:54:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:54:59,733 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:54:59,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:54:59,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 18:54:59,955 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,SelfDestructingSolverStorable16 [2022-03-15 18:54:59,955 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:54:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:54:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1312575002, now seen corresponding path program 9 times [2022-03-15 18:54:59,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:54:59,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317216519] [2022-03-15 18:54:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:54:59,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:54:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:00,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:00,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317216519] [2022-03-15 18:55:00,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317216519] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:00,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168732826] [2022-03-15 18:55:00,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:55:00,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:00,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:00,064 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 18:55:00,126 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 18:55:00,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 18:55:00,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:00,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 18:55:00,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:00,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:00,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168732826] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:00,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:00,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-15 18:55:00,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1153095463] [2022-03-15 18:55:00,742 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:00,744 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:00,754 INFO L252 McrAutomatonBuilder]: Finished intersection with 86 states and 160 transitions. [2022-03-15 18:55:00,754 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:01,321 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [14378#(not (<= (mod ~v_assert~0 256) 0)), 14435#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:55:01,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:55:01,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:55:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:55:01,322 INFO L87 Difference]: Start difference. First operand 318 states and 854 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 18:55:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:01,721 INFO L93 Difference]: Finished difference Result 554 states and 1444 transitions. [2022-03-15 18:55:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 18:55:01,722 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:55:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:01,723 INFO L225 Difference]: With dead ends: 554 [2022-03-15 18:55:01,723 INFO L226 Difference]: Without dead ends: 452 [2022-03-15 18:55:01,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 87 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=1079, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 18:55:01,724 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:01,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 2 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-03-15 18:55:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 374. [2022-03-15 18:55:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.7238605898123325) internal successors, (1016), 373 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 18:55:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1016 transitions. [2022-03-15 18:55:01,731 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1016 transitions. Word has length 26 [2022-03-15 18:55:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:01,731 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1016 transitions. [2022-03-15 18:55:01,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 18:55:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1016 transitions. [2022-03-15 18:55:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:55:01,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:01,732 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:01,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:01,963 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,SelfDestructingSolverStorable17 [2022-03-15 18:55:01,963 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1957623495, now seen corresponding path program 10 times [2022-03-15 18:55:01,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:01,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036706978] [2022-03-15 18:55:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:02,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:02,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036706978] [2022-03-15 18:55:02,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036706978] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:02,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714719106] [2022-03-15 18:55:02,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:55:02,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:02,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:02,063 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 18:55:02,082 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 18:55:02,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:55:02,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:02,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:55:02,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:02,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:02,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714719106] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:02,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:02,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 23 [2022-03-15 18:55:02,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [293046923] [2022-03-15 18:55:02,613 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:02,615 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:02,626 INFO L252 McrAutomatonBuilder]: Finished intersection with 94 states and 182 transitions. [2022-03-15 18:55:02,626 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:03,814 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [15942#(and (or (<= 1 ~pos~0) (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)) (or (not (= (mod ~d2~0 256) 0)) (<= 1 ~d1~0) (= (mod ~v_assert~0 256) 0) (<= 3 ~pos~0)) (or (<= 0 (+ ~pos~0 1)) (<= 1 ~d1~0) (= (mod ~v_assert~0 256) 0)) (or (<= (div ~d1~0 256) 0) (<= 0 (+ ~pos~0 1)) (= (mod ~v_assert~0 256) 0)) (or (<= (div ~d1~0 256) 0) (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0) (<= 3 ~pos~0)) (or (<= 0 (+ ~pos~0 3)) (= (mod ~v_assert~0 256) 0))), 15940#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 15941#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 0 (+ ~pos~0 1)) (<= 1 ~d1~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 0 (+ ~pos~0 3))) (or (<= (div ~d1~0 256) 0) (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 0 (+ ~pos~0 1))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~pos~0) (not (= (mod ~d2~0 256) 0))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0)) (<= 1 ~d1~0) (<= 3 ~pos~0)) (or (<= (div ~d1~0 256) 0) (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0)) (<= 3 ~pos~0))), 15882#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:03,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:55:03,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:55:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-03-15 18:55:03,815 INFO L87 Difference]: Start difference. First operand 374 states and 1016 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 18:55:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:05,513 INFO L93 Difference]: Finished difference Result 914 states and 2344 transitions. [2022-03-15 18:55:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 18:55:05,513 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:55:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:05,516 INFO L225 Difference]: With dead ends: 914 [2022-03-15 18:55:05,516 INFO L226 Difference]: Without dead ends: 750 [2022-03-15 18:55:05,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 21 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=570, Invalid=2736, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 18:55:05,517 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 238 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:05,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 1 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 18:55:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-03-15 18:55:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 498. [2022-03-15 18:55:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 2.756539235412475) internal successors, (1370), 497 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 18:55:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1370 transitions. [2022-03-15 18:55:05,533 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1370 transitions. Word has length 26 [2022-03-15 18:55:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:05,533 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1370 transitions. [2022-03-15 18:55:05,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 18:55:05,533 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1370 transitions. [2022-03-15 18:55:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:55:05,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:05,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:05,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-15 18:55:05,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:05,750 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1723024732, now seen corresponding path program 11 times [2022-03-15 18:55:05,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:05,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832954626] [2022-03-15 18:55:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:05,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:05,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:05,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832954626] [2022-03-15 18:55:05,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832954626] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:05,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100490406] [2022-03-15 18:55:05,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:55:05,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:05,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:05,857 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 18:55:05,858 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 18:55:05,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 18:55:05,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:05,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:55:05,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:06,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:06,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100490406] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:06,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:06,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2022-03-15 18:55:06,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [160317796] [2022-03-15 18:55:06,624 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:06,626 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:06,635 INFO L252 McrAutomatonBuilder]: Finished intersection with 80 states and 142 transitions. [2022-03-15 18:55:06,635 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:07,186 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [18037#(not (<= (mod ~v_assert~0 256) 0)), 18033#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:55:07,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:55:07,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:55:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2022-03-15 18:55:07,187 INFO L87 Difference]: Start difference. First operand 498 states and 1370 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:07,486 INFO L93 Difference]: Finished difference Result 642 states and 1742 transitions. [2022-03-15 18:55:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 18:55:07,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:55:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:07,496 INFO L225 Difference]: With dead ends: 642 [2022-03-15 18:55:07,496 INFO L226 Difference]: Without dead ends: 530 [2022-03-15 18:55:07,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 77 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 18:55:07,497 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:07,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-03-15 18:55:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 482. [2022-03-15 18:55:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 2.7567567567567566) internal successors, (1326), 481 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 18:55:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1326 transitions. [2022-03-15 18:55:07,505 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1326 transitions. Word has length 26 [2022-03-15 18:55:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:07,505 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1326 transitions. [2022-03-15 18:55:07,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1326 transitions. [2022-03-15 18:55:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:55:07,506 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:07,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:07,522 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 18:55:07,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:07,722 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash -239955661, now seen corresponding path program 12 times [2022-03-15 18:55:07,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:07,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231186966] [2022-03-15 18:55:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:07,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:07,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:07,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231186966] [2022-03-15 18:55:07,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231186966] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:07,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396692824] [2022-03-15 18:55:07,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:55:07,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:07,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:07,863 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 18:55:07,871 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 18:55:07,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 18:55:07,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:07,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:55:07,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:08,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:08,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396692824] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:08,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:08,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-03-15 18:55:08,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1783485295] [2022-03-15 18:55:08,448 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:08,450 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:08,461 INFO L252 McrAutomatonBuilder]: Finished intersection with 98 states and 190 transitions. [2022-03-15 18:55:08,461 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:09,854 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [19836#(not (<= (mod ~v_assert~0 256) 0)), 19892#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= ~d1~0 (* 256 (div ~d1~0 256)))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (< 0 (+ (div ~d1~0 256) 1)))), 19891#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 19893#(and (or (<= 1 ~pos~0) (= (mod ~v_assert~0 256) 0)) (or (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)) (or (<= ~d1~0 (* 256 (div ~d1~0 256))) (= (mod ~v_assert~0 256) 0)) (or (< 0 (+ (div ~d1~0 256) 1)) (= (mod ~v_assert~0 256) 0)))] [2022-03-15 18:55:09,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:55:09,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:55:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:55:09,855 INFO L87 Difference]: Start difference. First operand 482 states and 1326 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:10,181 INFO L93 Difference]: Finished difference Result 642 states and 1740 transitions. [2022-03-15 18:55:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:55:10,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:55:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:10,184 INFO L225 Difference]: With dead ends: 642 [2022-03-15 18:55:10,184 INFO L226 Difference]: Without dead ends: 574 [2022-03-15 18:55:10,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 24 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 18:55:10,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 115 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:10,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 2 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-03-15 18:55:10,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 530. [2022-03-15 18:55:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.7561436672967865) internal successors, (1458), 529 states have internal predecessors, (1458), 0 states have call successors, (0), 0 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 18:55:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1458 transitions. [2022-03-15 18:55:10,207 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1458 transitions. Word has length 26 [2022-03-15 18:55:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:10,208 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1458 transitions. [2022-03-15 18:55:10,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1458 transitions. [2022-03-15 18:55:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:55:10,209 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:10,210 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:10,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:10,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:10,436 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:10,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1872177523, now seen corresponding path program 13 times [2022-03-15 18:55:10,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:10,437 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793894030] [2022-03-15 18:55:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:10,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:10,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793894030] [2022-03-15 18:55:10,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793894030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:10,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265624345] [2022-03-15 18:55:10,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:55:10,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:10,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:10,547 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 18:55:10,572 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 18:55:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:10,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:55:10,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:10,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:11,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265624345] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:11,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:11,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2022-03-15 18:55:11,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1143468135] [2022-03-15 18:55:11,072 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:11,074 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:11,105 INFO L252 McrAutomatonBuilder]: Finished intersection with 92 states and 172 transitions. [2022-03-15 18:55:11,105 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:11,924 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [21744#(not (<= (mod ~v_assert~0 256) 0)), 21740#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:55:11,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:55:11,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:55:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-03-15 18:55:11,924 INFO L87 Difference]: Start difference. First operand 530 states and 1458 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:12,154 INFO L93 Difference]: Finished difference Result 678 states and 1849 transitions. [2022-03-15 18:55:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 18:55:12,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:55:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:12,156 INFO L225 Difference]: With dead ends: 678 [2022-03-15 18:55:12,156 INFO L226 Difference]: Without dead ends: 610 [2022-03-15 18:55:12,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 81 SyntacticMatches, 22 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 18:55:12,158 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:12,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:55:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-03-15 18:55:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 546. [2022-03-15 18:55:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.7559633027522934) internal successors, (1502), 545 states have internal predecessors, (1502), 0 states have call successors, (0), 0 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 18:55:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1502 transitions. [2022-03-15 18:55:12,169 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1502 transitions. Word has length 26 [2022-03-15 18:55:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:12,169 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1502 transitions. [2022-03-15 18:55:12,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:12,169 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1502 transitions. [2022-03-15 18:55:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 18:55:12,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:12,170 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:12,201 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 18:55:12,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:12,384 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:12,385 INFO L85 PathProgramCache]: Analyzing trace with hash -939720702, now seen corresponding path program 14 times [2022-03-15 18:55:12,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:12,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558662483] [2022-03-15 18:55:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:12,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:12,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:12,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558662483] [2022-03-15 18:55:12,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558662483] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:12,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182724219] [2022-03-15 18:55:12,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:55:12,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:12,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:12,493 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 18:55:12,495 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 18:55:12,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:55:12,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:12,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:55:12,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:12,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:13,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182724219] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:13,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:13,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-03-15 18:55:13,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [653399190] [2022-03-15 18:55:13,126 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:13,129 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:13,142 INFO L252 McrAutomatonBuilder]: Finished intersection with 104 states and 202 transitions. [2022-03-15 18:55:13,143 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:14,119 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [23759#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 23705#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:14,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:55:14,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:55:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 18:55:14,120 INFO L87 Difference]: Start difference. First operand 546 states and 1502 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 18:55:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:14,483 INFO L93 Difference]: Finished difference Result 662 states and 1813 transitions. [2022-03-15 18:55:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:55:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 18:55:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:14,486 INFO L225 Difference]: With dead ends: 662 [2022-03-15 18:55:14,486 INFO L226 Difference]: Without dead ends: 594 [2022-03-15 18:55:14,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2022-03-15 18:55:14,486 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:14,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-03-15 18:55:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 546. [2022-03-15 18:55:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.7559633027522934) internal successors, (1502), 545 states have internal predecessors, (1502), 0 states have call successors, (0), 0 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 18:55:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1502 transitions. [2022-03-15 18:55:14,499 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1502 transitions. Word has length 26 [2022-03-15 18:55:14,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:14,499 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1502 transitions. [2022-03-15 18:55:14,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 18:55:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1502 transitions. [2022-03-15 18:55:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:14,500 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:14,500 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:14,532 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 18:55:14,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:14,715 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:14,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1454100007, now seen corresponding path program 15 times [2022-03-15 18:55:14,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:14,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173353618] [2022-03-15 18:55:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:14,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:14,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:14,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173353618] [2022-03-15 18:55:14,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173353618] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:14,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911749261] [2022-03-15 18:55:14,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:55:14,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:14,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:14,879 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 18:55:14,884 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 18:55:14,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 18:55:14,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:14,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 18:55:14,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:15,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:55:15,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911749261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:15,520 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:15,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-03-15 18:55:15,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1727721992] [2022-03-15 18:55:15,521 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:15,523 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:15,535 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 218 transitions. [2022-03-15 18:55:15,535 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:16,778 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [25661#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 25665#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:16,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:55:16,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:55:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-03-15 18:55:16,779 INFO L87 Difference]: Start difference. First operand 546 states and 1502 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 18:55:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:17,091 INFO L93 Difference]: Finished difference Result 678 states and 1857 transitions. [2022-03-15 18:55:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 18:55:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:17,093 INFO L225 Difference]: With dead ends: 678 [2022-03-15 18:55:17,093 INFO L226 Difference]: Without dead ends: 610 [2022-03-15 18:55:17,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 113 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2022-03-15 18:55:17,094 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:17,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-03-15 18:55:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 546. [2022-03-15 18:55:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.7559633027522934) internal successors, (1502), 545 states have internal predecessors, (1502), 0 states have call successors, (0), 0 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 18:55:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1502 transitions. [2022-03-15 18:55:17,101 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1502 transitions. Word has length 28 [2022-03-15 18:55:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:17,102 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1502 transitions. [2022-03-15 18:55:17,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 18:55:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1502 transitions. [2022-03-15 18:55:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:17,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:17,103 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:17,128 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 18:55:17,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:17,303 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash 342118935, now seen corresponding path program 16 times [2022-03-15 18:55:17,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:17,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560317289] [2022-03-15 18:55:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:17,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:17,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560317289] [2022-03-15 18:55:17,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560317289] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:17,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581367059] [2022-03-15 18:55:17,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:55:17,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:17,479 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 18:55:17,480 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 18:55:17,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:55:17,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:17,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 18:55:17,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:17,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:18,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581367059] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:18,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:18,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2022-03-15 18:55:18,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [221779850] [2022-03-15 18:55:18,240 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:18,243 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:18,287 INFO L252 McrAutomatonBuilder]: Finished intersection with 102 states and 196 transitions. [2022-03-15 18:55:18,287 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:19,858 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [27703#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 27638#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:19,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 18:55:19,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:19,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 18:55:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2022-03-15 18:55:19,858 INFO L87 Difference]: Start difference. First operand 546 states and 1502 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 18:55:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:20,405 INFO L93 Difference]: Finished difference Result 714 states and 1962 transitions. [2022-03-15 18:55:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:55:20,406 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:20,408 INFO L225 Difference]: With dead ends: 714 [2022-03-15 18:55:20,408 INFO L226 Difference]: Without dead ends: 642 [2022-03-15 18:55:20,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 74 SyntacticMatches, 36 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=348, Invalid=1374, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 18:55:20,410 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:20,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-03-15 18:55:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 546. [2022-03-15 18:55:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.7412844036697246) internal successors, (1494), 545 states have internal predecessors, (1494), 0 states have call successors, (0), 0 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 18:55:20,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1494 transitions. [2022-03-15 18:55:20,436 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1494 transitions. Word has length 28 [2022-03-15 18:55:20,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:20,437 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1494 transitions. [2022-03-15 18:55:20,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 18:55:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1494 transitions. [2022-03-15 18:55:20,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:20,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:20,438 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:20,463 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 18:55:20,651 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,SelfDestructingSolverStorable24 [2022-03-15 18:55:20,651 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -302929558, now seen corresponding path program 17 times [2022-03-15 18:55:20,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:20,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793651183] [2022-03-15 18:55:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:20,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:20,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793651183] [2022-03-15 18:55:20,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793651183] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:20,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652078193] [2022-03-15 18:55:20,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:55:20,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:20,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:20,777 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 18:55:20,778 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 18:55:20,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 18:55:20,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:20,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:55:20,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:21,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:21,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652078193] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:21,598 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:21,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 27 [2022-03-15 18:55:21,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1232046978] [2022-03-15 18:55:21,599 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:21,601 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:21,614 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 218 transitions. [2022-03-15 18:55:21,614 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:22,623 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [29728#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 5 ~pos~0) (not (= (mod ~d2~0 256) 0)))), 29669#(not (<= (mod ~v_assert~0 256) 0)), 29665#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 29729#(and (or (<= 1 ~pos~0) (= (mod ~v_assert~0 256) 0)) (or (<= 5 ~pos~0) (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)))] [2022-03-15 18:55:22,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:55:22,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:55:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2022-03-15 18:55:22,624 INFO L87 Difference]: Start difference. First operand 546 states and 1494 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:23,110 INFO L93 Difference]: Finished difference Result 754 states and 2032 transitions. [2022-03-15 18:55:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 18:55:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-15 18:55:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:23,112 INFO L225 Difference]: With dead ends: 754 [2022-03-15 18:55:23,112 INFO L226 Difference]: Without dead ends: 686 [2022-03-15 18:55:23,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 103 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=376, Invalid=1516, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 18:55:23,113 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:23,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:55:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-03-15 18:55:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 562. [2022-03-15 18:55:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 2.7415329768270946) internal successors, (1538), 561 states have internal predecessors, (1538), 0 states have call successors, (0), 0 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 18:55:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1538 transitions. [2022-03-15 18:55:23,123 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1538 transitions. Word has length 28 [2022-03-15 18:55:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:23,123 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1538 transitions. [2022-03-15 18:55:23,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1538 transitions. [2022-03-15 18:55:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:23,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:23,124 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:23,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 18:55:23,337 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,SelfDestructingSolverStorable25 [2022-03-15 18:55:23,338 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:23,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1825188006, now seen corresponding path program 18 times [2022-03-15 18:55:23,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:23,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148650374] [2022-03-15 18:55:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:23,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:23,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:23,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148650374] [2022-03-15 18:55:23,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148650374] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:23,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270765542] [2022-03-15 18:55:23,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:55:23,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:23,465 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 18:55:23,465 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 18:55:23,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 18:55:23,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:23,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 18:55:23,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:23,752 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 18:55:23,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:24,144 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 18:55:24,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270765542] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:24,144 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:24,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 21 [2022-03-15 18:55:24,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [649738972] [2022-03-15 18:55:24,144 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:24,146 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:24,160 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 218 transitions. [2022-03-15 18:55:24,160 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:25,586 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [31820#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 31759#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:25,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 18:55:25,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 18:55:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:55:25,587 INFO L87 Difference]: Start difference. First operand 562 states and 1538 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 18:55:25,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:25,992 INFO L93 Difference]: Finished difference Result 782 states and 2121 transitions. [2022-03-15 18:55:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:55:25,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:25,994 INFO L225 Difference]: With dead ends: 782 [2022-03-15 18:55:25,995 INFO L226 Difference]: Without dead ends: 674 [2022-03-15 18:55:25,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 114 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 18:55:25,995 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:25,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-03-15 18:55:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 626. [2022-03-15 18:55:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 2.7424) internal successors, (1714), 625 states have internal predecessors, (1714), 0 states have call successors, (0), 0 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 18:55:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1714 transitions. [2022-03-15 18:55:26,004 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1714 transitions. Word has length 28 [2022-03-15 18:55:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:26,004 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 1714 transitions. [2022-03-15 18:55:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 18:55:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1714 transitions. [2022-03-15 18:55:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:26,005 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:26,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:26,023 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 18:55:26,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 18:55:26,205 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash 301432985, now seen corresponding path program 19 times [2022-03-15 18:55:26,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:26,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812913665] [2022-03-15 18:55:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:26,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:26,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812913665] [2022-03-15 18:55:26,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812913665] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:26,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118837422] [2022-03-15 18:55:26,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:55:26,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:26,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:26,345 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 18:55:26,346 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 18:55:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:26,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 18:55:26,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:26,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:27,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118837422] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:27,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:27,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 24 [2022-03-15 18:55:27,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1465954367] [2022-03-15 18:55:27,068 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:27,070 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:27,082 INFO L252 McrAutomatonBuilder]: Finished intersection with 94 states and 174 transitions. [2022-03-15 18:55:27,082 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:27,727 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [34009#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 34013#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:27,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 18:55:27,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 18:55:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2022-03-15 18:55:27,728 INFO L87 Difference]: Start difference. First operand 626 states and 1714 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 18:55:28,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:28,090 INFO L93 Difference]: Finished difference Result 742 states and 2011 transitions. [2022-03-15 18:55:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:55:28,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:28,092 INFO L225 Difference]: With dead ends: 742 [2022-03-15 18:55:28,092 INFO L226 Difference]: Without dead ends: 658 [2022-03-15 18:55:28,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 18:55:28,093 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:28,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:55:28,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-03-15 18:55:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2022-03-15 18:55:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 2.7427701674277016) internal successors, (1802), 657 states have internal predecessors, (1802), 0 states have call successors, (0), 0 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 18:55:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1802 transitions. [2022-03-15 18:55:28,103 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1802 transitions. Word has length 28 [2022-03-15 18:55:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:28,103 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 1802 transitions. [2022-03-15 18:55:28,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 18:55:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1802 transitions. [2022-03-15 18:55:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:28,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:28,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:28,129 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 18:55:28,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:28,320 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:28,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1414738276, now seen corresponding path program 20 times [2022-03-15 18:55:28,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:28,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777656715] [2022-03-15 18:55:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:28,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:28,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:28,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777656715] [2022-03-15 18:55:28,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777656715] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:28,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288847944] [2022-03-15 18:55:28,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:55:28,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:28,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:28,478 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 18:55:28,478 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 18:55:28,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:55:28,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:28,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 18:55:28,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:28,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:29,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288847944] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:29,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:29,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 22 [2022-03-15 18:55:29,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1175219723] [2022-03-15 18:55:29,141 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:29,143 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:29,157 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 218 transitions. [2022-03-15 18:55:29,157 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:30,822 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [36344#(and (or (<= ~d1~0 (* 256 (div ~d1~0 256))) (= (mod ~v_assert~0 256) 0)) (or (= (mod ~d2~0 256) 0) (= (mod ~v_assert~0 256) 0)) (or (< 0 (+ (div ~d1~0 256) 1)) (= (mod ~v_assert~0 256) 0)) (or (= (mod ~v_assert~0 256) 0) (<= 3 ~pos~0))), 36343#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 3 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= ~d1~0 (* 256 (div ~d1~0 256)))) (or (= (mod ~d2~0 256) 0) (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (< 0 (+ (div ~d1~0 256) 1)))), 36283#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 36287#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:30,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:55:30,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:55:30,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-03-15 18:55:30,823 INFO L87 Difference]: Start difference. First operand 658 states and 1802 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:31,541 INFO L93 Difference]: Finished difference Result 1058 states and 2851 transitions. [2022-03-15 18:55:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 18:55:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-15 18:55:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:31,544 INFO L225 Difference]: With dead ends: 1058 [2022-03-15 18:55:31,544 INFO L226 Difference]: Without dead ends: 830 [2022-03-15 18:55:31,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 94 SyntacticMatches, 27 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 18:55:31,545 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:31,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 2 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 18:55:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-03-15 18:55:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 706. [2022-03-15 18:55:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 2.7319148936170214) internal successors, (1926), 705 states have internal predecessors, (1926), 0 states have call successors, (0), 0 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 18:55:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1926 transitions. [2022-03-15 18:55:31,554 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1926 transitions. Word has length 28 [2022-03-15 18:55:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:31,554 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 1926 transitions. [2022-03-15 18:55:31,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1926 transitions. [2022-03-15 18:55:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:31,555 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:31,556 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:31,574 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 18:55:31,771 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,SelfDestructingSolverStorable28 [2022-03-15 18:55:31,772 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:31,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2129690437, now seen corresponding path program 21 times [2022-03-15 18:55:31,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:31,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413228392] [2022-03-15 18:55:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:31,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:31,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:31,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413228392] [2022-03-15 18:55:31,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413228392] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:31,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923276009] [2022-03-15 18:55:31,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:55:31,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:31,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:31,873 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 18:55:31,875 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 18:55:31,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 18:55:31,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:31,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 18:55:31,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:32,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:32,453 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 18:55:32,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923276009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:32,453 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:32,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2022-03-15 18:55:32,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1359974290] [2022-03-15 18:55:32,454 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:32,456 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:32,469 INFO L252 McrAutomatonBuilder]: Finished intersection with 102 states and 196 transitions. [2022-03-15 18:55:32,469 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:33,580 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [39042#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 0 (+ ~pos~0 1))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0)) (<= 3 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (= ~d1~0 0))), 38978#(not (<= (mod ~v_assert~0 256) 0)), 39041#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 39043#(and (or (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0) (<= 3 ~pos~0)) (or (= ~d1~0 0) (= (mod ~v_assert~0 256) 0)) (or (<= 0 (+ ~pos~0 1)) (= (mod ~v_assert~0 256) 0)))] [2022-03-15 18:55:33,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:55:33,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:55:33,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-03-15 18:55:33,581 INFO L87 Difference]: Start difference. First operand 706 states and 1926 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:34,741 INFO L93 Difference]: Finished difference Result 1038 states and 2701 transitions. [2022-03-15 18:55:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 18:55:34,741 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-15 18:55:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:34,744 INFO L225 Difference]: With dead ends: 1038 [2022-03-15 18:55:34,744 INFO L226 Difference]: Without dead ends: 912 [2022-03-15 18:55:34,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 101 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=444, Invalid=2418, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 18:55:34,745 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 178 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:34,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 6 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 18:55:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-03-15 18:55:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 738. [2022-03-15 18:55:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 2.7435549525101766) internal successors, (2022), 737 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 18:55:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2022 transitions. [2022-03-15 18:55:34,756 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2022 transitions. Word has length 28 [2022-03-15 18:55:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:34,756 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2022 transitions. [2022-03-15 18:55:34,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:55:34,757 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2022 transitions. [2022-03-15 18:55:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:34,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:34,758 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:34,777 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 18:55:34,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:34,971 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2109538978, now seen corresponding path program 22 times [2022-03-15 18:55:34,973 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:34,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416167715] [2022-03-15 18:55:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:35,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:35,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416167715] [2022-03-15 18:55:35,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416167715] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:35,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521690086] [2022-03-15 18:55:35,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:55:35,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:35,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:35,082 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 18:55:35,082 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 18:55:35,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:55:35,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:35,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 18:55:35,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:35,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:35,741 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 18:55:35,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521690086] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:35,742 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:35,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 27 [2022-03-15 18:55:35,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [329761937] [2022-03-15 18:55:35,742 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:35,744 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:35,757 INFO L252 McrAutomatonBuilder]: Finished intersection with 114 states and 226 transitions. [2022-03-15 18:55:35,758 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:37,046 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [41802#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 41803#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 3 ~pos~0)) (or (= (mod ~d2~0 256) 0) (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))), 41736#(not (<= (mod ~v_assert~0 256) 0)), 41804#(and (or (= (mod ~d2~0 256) 0) (= (mod ~v_assert~0 256) 0)) (or (= (mod ~v_assert~0 256) 0) (<= 3 ~pos~0))), 41805#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~pos~0) (= (mod ~v_assert~0 256) 0))), 41806#(and (or (<= 1 ~pos~0) (= (mod ~v_assert~0 256) 0)) (or (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)))] [2022-03-15 18:55:37,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:55:37,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:55:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 18:55:37,048 INFO L87 Difference]: Start difference. First operand 738 states and 2022 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 18:55:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:37,570 INFO L93 Difference]: Finished difference Result 878 states and 2355 transitions. [2022-03-15 18:55:37,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 18:55:37,570 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:37,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:37,572 INFO L225 Difference]: With dead ends: 878 [2022-03-15 18:55:37,573 INFO L226 Difference]: Without dead ends: 810 [2022-03-15 18:55:37,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=384, Invalid=1778, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 18:55:37,573 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 107 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:37,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 0 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:55:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-03-15 18:55:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 722. [2022-03-15 18:55:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 2.7434119278779474) internal successors, (1978), 721 states have internal predecessors, (1978), 0 states have call successors, (0), 0 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 18:55:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1978 transitions. [2022-03-15 18:55:37,582 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1978 transitions. Word has length 28 [2022-03-15 18:55:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:37,583 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 1978 transitions. [2022-03-15 18:55:37,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 18:55:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1978 transitions. [2022-03-15 18:55:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:37,584 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:37,584 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:37,602 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 18:55:37,799 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,SelfDestructingSolverStorable30 [2022-03-15 18:55:37,799 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:37,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash -73295134, now seen corresponding path program 23 times [2022-03-15 18:55:37,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:37,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886690101] [2022-03-15 18:55:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:37,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:37,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886690101] [2022-03-15 18:55:37,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886690101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:37,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091433000] [2022-03-15 18:55:37,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:55:37,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:37,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:37,945 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 18:55:37,946 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 18:55:38,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 18:55:38,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:38,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:55:38,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:38,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:38,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091433000] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:38,559 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:38,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2022-03-15 18:55:38,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1666105792] [2022-03-15 18:55:38,559 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:38,561 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:38,574 INFO L252 McrAutomatonBuilder]: Finished intersection with 106 states and 204 transitions. [2022-03-15 18:55:38,574 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:39,606 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [44348#(and (or (<= 1 ~pos~0) (= (mod ~v_assert~0 256) 0)) (or (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)) (or (<= ~d1~0 (* 256 (div ~d1~0 256))) (= (mod ~v_assert~0 256) 0)) (or (< 0 (+ (div ~d1~0 256) 1)) (= (mod ~v_assert~0 256) 0))), 44347#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= ~d1~0 (* 256 (div ~d1~0 256)))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (< 0 (+ (div ~d1~0 256) 1)))), 44288#(not (<= (mod ~v_assert~0 256) 0)), 44284#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:55:39,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:55:39,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:39,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:55:39,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2022-03-15 18:55:39,607 INFO L87 Difference]: Start difference. First operand 722 states and 1978 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 18:55:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:40,106 INFO L93 Difference]: Finished difference Result 1050 states and 2831 transitions. [2022-03-15 18:55:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 18:55:40,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:40,110 INFO L225 Difference]: With dead ends: 1050 [2022-03-15 18:55:40,110 INFO L226 Difference]: Without dead ends: 894 [2022-03-15 18:55:40,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 84 SyntacticMatches, 28 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1884, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 18:55:40,111 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 142 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:40,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 18:55:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-03-15 18:55:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 770. [2022-03-15 18:55:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 2.743823146944083) internal successors, (2110), 769 states have internal predecessors, (2110), 0 states have call successors, (0), 0 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 18:55:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2110 transitions. [2022-03-15 18:55:40,132 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2110 transitions. Word has length 28 [2022-03-15 18:55:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:40,132 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 2110 transitions. [2022-03-15 18:55:40,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 18:55:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2110 transitions. [2022-03-15 18:55:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:40,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:40,134 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:40,149 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 18:55:40,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:40,350 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash -718343627, now seen corresponding path program 24 times [2022-03-15 18:55:40,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:40,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401191564] [2022-03-15 18:55:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:40,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:40,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401191564] [2022-03-15 18:55:40,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401191564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:40,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712818172] [2022-03-15 18:55:40,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:55:40,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:40,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:40,504 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 18:55:40,506 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 18:55:40,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 18:55:40,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:40,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 18:55:40,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:40,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:41,004 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 18:55:41,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712818172] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:41,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:41,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2022-03-15 18:55:41,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1652553793] [2022-03-15 18:55:41,005 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:41,008 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:41,023 INFO L252 McrAutomatonBuilder]: Finished intersection with 114 states and 226 transitions. [2022-03-15 18:55:41,023 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:42,652 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [47167#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 47100#(not (<= (mod ~v_assert~0 256) 0)), 47163#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 0 (+ ~pos~0 2))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 2 ~pos~0) (not (= (mod ~d2~0 256) 0))) (or (<= (div ~d1~0 256) 0) (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~d1~0))), 47166#(and (or (<= 1 ~pos~0) (= (mod ~v_assert~0 256) 0)) (or (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)) (or (= ~d1~0 0) (= (mod ~v_assert~0 256) 0))), 47165#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (= ~d1~0 0))), 47164#(and (or (<= 0 (+ ~pos~0 2)) (= (mod ~v_assert~0 256) 0)) (or (<= (div ~d1~0 256) 0) (= (mod ~v_assert~0 256) 0)) (or (<= 1 ~d1~0) (= (mod ~v_assert~0 256) 0)) (or (<= 2 ~pos~0) (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)))] [2022-03-15 18:55:42,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:55:42,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:42,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:55:42,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2022-03-15 18:55:42,655 INFO L87 Difference]: Start difference. First operand 770 states and 2110 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 18:55:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:43,551 INFO L93 Difference]: Finished difference Result 1160 states and 3129 transitions. [2022-03-15 18:55:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 18:55:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:43,554 INFO L225 Difference]: With dead ends: 1160 [2022-03-15 18:55:43,554 INFO L226 Difference]: Without dead ends: 950 [2022-03-15 18:55:43,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=488, Invalid=2268, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 18:55:43,555 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 160 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:43,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 6 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 18:55:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-03-15 18:55:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 802. [2022-03-15 18:55:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 2.7440699126092385) internal successors, (2198), 801 states have internal predecessors, (2198), 0 states have call successors, (0), 0 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 18:55:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2198 transitions. [2022-03-15 18:55:43,565 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2198 transitions. Word has length 28 [2022-03-15 18:55:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:43,566 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2198 transitions. [2022-03-15 18:55:43,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 18:55:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2198 transitions. [2022-03-15 18:55:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:55:43,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:43,567 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:43,584 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 18:55:43,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:43,780 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:43,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash -349767247, now seen corresponding path program 25 times [2022-03-15 18:55:43,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:43,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736801060] [2022-03-15 18:55:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:43,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:43,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736801060] [2022-03-15 18:55:43,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736801060] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:43,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865880223] [2022-03-15 18:55:43,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:55:43,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:43,919 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 18:55:43,920 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 18:55:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:44,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 18:55:44,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:44,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:44,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865880223] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:44,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:44,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2022-03-15 18:55:44,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [321713792] [2022-03-15 18:55:44,637 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:44,639 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:44,654 INFO L252 McrAutomatonBuilder]: Finished intersection with 118 states and 234 transitions. [2022-03-15 18:55:44,654 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:46,351 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [50168#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 0 ~pos~0)) (or (<= (div ~d1~0 256) 0) (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 2 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 2 ~pos~0) (<= 1 ~d1~0))), 50106#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 50169#(and (or (<= 2 ~pos~0) (<= 1 ~d1~0) (= (mod ~v_assert~0 256) 0)) (or (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0)) (or (= (mod ~v_assert~0 256) 0) (<= 0 ~pos~0)) (or (<= (div ~d1~0 256) 0) (<= 2 ~pos~0) (= (mod ~v_assert~0 256) 0))), 50110#(not (<= (mod ~v_assert~0 256) 0))] [2022-03-15 18:55:46,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:55:46,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:46,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:55:46,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2022-03-15 18:55:46,352 INFO L87 Difference]: Start difference. First operand 802 states and 2198 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:55:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:47,168 INFO L93 Difference]: Finished difference Result 1150 states and 3121 transitions. [2022-03-15 18:55:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 18:55:47,169 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 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 28 [2022-03-15 18:55:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:47,171 INFO L225 Difference]: With dead ends: 1150 [2022-03-15 18:55:47,171 INFO L226 Difference]: Without dead ends: 606 [2022-03-15 18:55:47,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 91 SyntacticMatches, 35 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=418, Invalid=1652, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 18:55:47,171 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:47,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 18:55:47,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-03-15 18:55:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 594. [2022-03-15 18:55:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 2.745362563237774) internal successors, (1628), 593 states have internal predecessors, (1628), 0 states have call successors, (0), 0 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 18:55:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1628 transitions. [2022-03-15 18:55:47,178 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1628 transitions. Word has length 28 [2022-03-15 18:55:47,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:47,178 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 1628 transitions. [2022-03-15 18:55:47,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:55:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1628 transitions. [2022-03-15 18:55:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 18:55:47,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:47,179 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:47,202 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 18:55:47,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:47,380 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 720044379, now seen corresponding path program 26 times [2022-03-15 18:55:47,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:47,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280925923] [2022-03-15 18:55:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:47,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:47,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280925923] [2022-03-15 18:55:47,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280925923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:47,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910866086] [2022-03-15 18:55:47,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:55:47,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:47,528 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 18:55:47,529 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 18:55:47,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:55:47,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:47,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:55:47,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:55:47,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 18:55:48,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910866086] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:48,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:48,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 22 [2022-03-15 18:55:48,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1081642812] [2022-03-15 18:55:48,178 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:48,180 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:48,204 INFO L252 McrAutomatonBuilder]: Finished intersection with 126 states and 254 transitions. [2022-03-15 18:55:48,205 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:49,688 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [52742#(and (or (<= ~d1~0 (* 256 (div ~d1~0 256))) (= (mod ~v_assert~0 256) 0)) (or (not (= (mod ~d2~0 256) 0)) (= (mod ~v_assert~0 256) 0) (<= 3 ~pos~0)) (or (not (<= (+ (div ~d1~0 256) 1) 0)) (= (mod ~v_assert~0 256) 0)) (or (<= 0 (+ ~pos~0 1)) (= (mod ~v_assert~0 256) 0))), 52741#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 0 (+ ~pos~0 1))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (= (mod ~d2~0 256) 0)) (<= 3 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (<= (+ (div ~d1~0 256) 1) 0))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= ~d1~0 (* 256 (div ~d1~0 256))))), 52680#(not (<= (mod ~v_assert~0 256) 0)), 52676#(not (<= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0))] [2022-03-15 18:55:49,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:55:49,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:49,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:55:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2022-03-15 18:55:49,689 INFO L87 Difference]: Start difference. First operand 594 states and 1628 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:55:50,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:50,422 INFO L93 Difference]: Finished difference Result 938 states and 2527 transitions. [2022-03-15 18:55:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 18:55:50,422 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 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 30 [2022-03-15 18:55:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:50,428 INFO L225 Difference]: With dead ends: 938 [2022-03-15 18:55:50,428 INFO L226 Difference]: Without dead ends: 766 [2022-03-15 18:55:50,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 115 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=357, Invalid=1535, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 18:55:50,429 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:50,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 4 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 18:55:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-03-15 18:55:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 610. [2022-03-15 18:55:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 2.7454844006568146) internal successors, (1672), 609 states have internal predecessors, (1672), 0 states have call successors, (0), 0 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 18:55:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1672 transitions. [2022-03-15 18:55:50,436 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1672 transitions. Word has length 30 [2022-03-15 18:55:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:50,437 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1672 transitions. [2022-03-15 18:55:50,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:55:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1672 transitions. [2022-03-15 18:55:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 18:55:50,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:55:50,438 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:55:50,454 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 18:55:50,654 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,SelfDestructingSolverStorable34 [2022-03-15 18:55:50,654 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 18:55:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:55:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1857255083, now seen corresponding path program 27 times [2022-03-15 18:55:50,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:55:50,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010256288] [2022-03-15 18:55:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:55:50,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:55:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:55:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:50,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:55:50,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010256288] [2022-03-15 18:55:50,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010256288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:55:50,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600135045] [2022-03-15 18:55:50,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:55:50,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:55:50,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:55:50,811 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 18:55:50,812 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 18:55:50,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 18:55:50,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:55:50,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:55:50,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:55:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:55:51,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:55:51,509 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 18:55:51,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600135045] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:55:51,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:55:51,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2022-03-15 18:55:51,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1162750263] [2022-03-15 18:55:51,509 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:55:51,517 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:55:51,549 INFO L252 McrAutomatonBuilder]: Finished intersection with 126 states and 254 transitions. [2022-03-15 18:55:51,550 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:55:53,006 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [55070#(not (<= (mod ~v_assert~0 256) 0)), 55138#(and (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= 1 ~pos~0)) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (not (<= (+ (div ~d1~0 256) 1) 0))) (or (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0) (<= ~d1~0 (* 256 (div ~d1~0 256))))), 55140#(not (= (mod thread2Thread1of1ForFork2_~lv_assert~1 256) 0)), 55139#(and (or (<= 1 ~pos~0) (= (mod ~v_assert~0 256) 0)) (or (<= ~d1~0 (* 256 (div ~d1~0 256))) (= (mod ~v_assert~0 256) 0)) (or (not (<= (+ (div ~d1~0 256) 1) 0)) (= (mod ~v_assert~0 256) 0)))] [2022-03-15 18:55:53,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:55:53,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:55:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:55:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-03-15 18:55:53,007 INFO L87 Difference]: Start difference. First operand 610 states and 1672 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:55:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:55:53,308 INFO L93 Difference]: Finished difference Result 710 states and 1964 transitions. [2022-03-15 18:55:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 18:55:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 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 30 [2022-03-15 18:55:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:55:53,308 INFO L225 Difference]: With dead ends: 710 [2022-03-15 18:55:53,308 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 18:55:53,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 100 SyntacticMatches, 37 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 18:55:53,309 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:55:53,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:55:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 18:55:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 18:55:53,309 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 18:55:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 18:55:53,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-03-15 18:55:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:55:53,310 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 18:55:53,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:55:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 18:55:53,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 18:55:53,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-03-15 18:55:53,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 18:55:53,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 18:55:53,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 18:55:53,328 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 18:55:53,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-15 18:55:53,524 INFO L732 BasicCegarLoop]: Path program histogram: [27, 3, 3, 3] [2022-03-15 18:55:53,525 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 18:55:53,525 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 18:55:53,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 06:55:53 BasicIcfg [2022-03-15 18:55:53,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 18:55:53,531 INFO L158 Benchmark]: Toolchain (without parser) took 80835.71ms. Allocated memory was 200.3MB in the beginning and 723.5MB in the end (delta: 523.2MB). Free memory was 146.2MB in the beginning and 625.8MB in the end (delta: -479.6MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2022-03-15 18:55:53,531 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory is still 162.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 18:55:53,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.16ms. Allocated memory is still 200.3MB. Free memory was 175.1MB in the beginning and 172.1MB in the end (delta: 3.0MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2022-03-15 18:55:53,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.30ms. Allocated memory is still 200.3MB. Free memory was 172.1MB in the beginning and 170.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 18:55:53,535 INFO L158 Benchmark]: Boogie Preprocessor took 29.72ms. Allocated memory is still 200.3MB. Free memory was 170.7MB in the beginning and 169.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 18:55:53,538 INFO L158 Benchmark]: RCFGBuilder took 338.59ms. Allocated memory is still 200.3MB. Free memory was 169.3MB in the beginning and 155.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-15 18:55:53,540 INFO L158 Benchmark]: TraceAbstraction took 80204.19ms. Allocated memory was 200.3MB in the beginning and 723.5MB in the end (delta: 523.2MB). Free memory was 155.4MB in the beginning and 625.8MB in the end (delta: -470.4MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. [2022-03-15 18:55:53,541 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 200.3MB. Free memory is still 162.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.16ms. Allocated memory is still 200.3MB. Free memory was 175.1MB in the beginning and 172.1MB in the end (delta: 3.0MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.30ms. Allocated memory is still 200.3MB. Free memory was 172.1MB in the beginning and 170.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.72ms. Allocated memory is still 200.3MB. Free memory was 170.7MB in the beginning and 169.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 338.59ms. Allocated memory is still 200.3MB. Free memory was 169.3MB in the beginning and 155.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 80204.19ms. Allocated memory was 200.3MB in the beginning and 723.5MB in the end (delta: 523.2MB). Free memory was 155.4MB in the beginning and 625.8MB in the end (delta: -470.4MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 108 PlacesBefore, 34 PlacesAfterwards, 105 TransitionsBefore, 26 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 92 TotalNumberOfCompositions, 1929 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1579, positive: 1535, positive conditional: 0, positive unconditional: 1535, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 597, positive: 580, positive conditional: 0, positive unconditional: 580, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1579, positive: 955, positive conditional: 0, positive unconditional: 955, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 597, unknown conditional: 0, unknown unconditional: 597] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - 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: 116]: 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 7 procedures, 126 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 80.1s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.0s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3416 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3416 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8871 mSDsCounter, 1498 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18774 IncrementalHoareTripleChecker+Invalid, 20272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1498 mSolverCounterUnsat, 2 mSDtfsCounter, 18774 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4478 GetRequests, 2789 SyntacticMatches, 508 SemanticMatches, 1181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17853 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=802occurred in iteration=33, InterpolantAutomatonStates: 658, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 36 MinimizatonAttempts, 2190 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 1710 NumberOfCodeBlocks, 1710 NumberOfCodeBlocksAsserted, 129 NumberOfCheckSat, 2420 ConstructedInterpolants, 0 QuantifiedInterpolants, 26820 SizeOfPredicates, 529 NumberOfNonLiveVariables, 5025 ConjunctsInSsa, 500 ConjunctsInUnsatCore, 98 InterpolantComputations, 5 PerfectInterpolantSequences, 214/941 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 18:55:53,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...