/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/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:28:47,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:28:47,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:28:47,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 19:28:47,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 19:28:47,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 19:28:47,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 19:28:47,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 19:28:47,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 19:28:47,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 19:28:47,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 19:28:47,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 19:28:47,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:28:47,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:28:47,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:28:47,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:28:47,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:28:47,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:28:47,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:28:47,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:28:47,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:28:47,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:28:47,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:28:47,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:28:47,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 19:28:47,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 19:28:47,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 19:28:47,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 19:28:47,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 19:28:47,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 19:28:47,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 19:28:47,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 19:28:47,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 19:28:47,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 19:28:47,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 19:28:47,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 19:28:47,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 19:28:47,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 19:28:47,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:28:47,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:28:47,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:28:47,287 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 19:28:47,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:28:47,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:28:47,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:28:47,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:28:47,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:28:47,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:28:47,322 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:28:47,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:28:47,323 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:28:47,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:28:47,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:28:47,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:28:47,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:28:47,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:28:47,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:28:47,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:28:47,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:28:47,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:28:47,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:28:47,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:28:47,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:28:47,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:28:47,327 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:28:47,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:28:47,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:28:47,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:28:47,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:28:47,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:28:47,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:28:47,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:28:47,553 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:28:47,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-15 19:28:47,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d19d315/d9c5afdcd95f4309a46e5956f15ed66e/FLAG05311a73a [2022-03-15 19:28:48,010 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:28:48,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-15 19:28:48,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d19d315/d9c5afdcd95f4309a46e5956f15ed66e/FLAG05311a73a [2022-03-15 19:28:48,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d19d315/d9c5afdcd95f4309a46e5956f15ed66e [2022-03-15 19:28:48,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:28:48,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:28:48,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:28:48,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:28:48,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:28:48,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cd8e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48, skipping insertion in model container [2022-03-15 19:28:48,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:28:48,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:28:48,215 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/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-03-15 19:28:48,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:28:48,224 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:28:48,242 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/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2022-03-15 19:28:48,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:28:48,254 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:28:48,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48 WrapperNode [2022-03-15 19:28:48,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:28:48,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:28:48,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:28:48,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:28:48,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,283 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-03-15 19:28:48,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:28:48,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:28:48,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:28:48,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:28:48,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:28:48,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:28:48,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:28:48,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:28:48,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (1/1) ... [2022-03-15 19:28:48,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:28:48,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:48,332 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 19:28:48,343 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 19:28:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:28:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:28:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:28:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:28:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:28:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:28:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:28:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:28:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 19:28:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 19:28:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:28:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:28:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:28:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:28:48,371 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 19:28:48,479 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:28:48,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:28:48,697 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:28:48,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:28:48,743 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 19:28:48,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:28:48 BoogieIcfgContainer [2022-03-15 19:28:48,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:28:48,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:28:48,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:28:48,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:28:48,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:28:48" (1/3) ... [2022-03-15 19:28:48,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b6f569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:28:48, skipping insertion in model container [2022-03-15 19:28:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:48" (2/3) ... [2022-03-15 19:28:48,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b6f569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:28:48, skipping insertion in model container [2022-03-15 19:28:48,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:28:48" (3/3) ... [2022-03-15 19:28:48,755 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2022-03-15 19:28:48,760 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:28:48,760 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:28:48,760 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:28:48,760 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:28:48,809 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,809 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,814 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,817 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,817 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,818 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,820 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,821 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,822 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,823 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,824 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,824 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,825 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,826 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,826 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,827 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,829 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,830 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,830 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,830 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,836 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,838 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:48,843 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 19:28:48,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:28:48,905 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 19:28:48,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 19:28:48,918 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:28:48,926 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 84 transitions, 184 flow [2022-03-15 19:28:48,929 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 84 transitions, 184 flow [2022-03-15 19:28:48,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 184 flow [2022-03-15 19:28:48,988 INFO L129 PetriNetUnfolder]: 6/82 cut-off events. [2022-03-15 19:28:48,988 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 19:28:48,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 6/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-03-15 19:28:48,992 INFO L116 LiptonReduction]: Number of co-enabled transitions 404 [2022-03-15 19:28:51,024 INFO L131 LiptonReduction]: Checked pairs total: 448 [2022-03-15 19:28:51,024 INFO L133 LiptonReduction]: Total number of compositions: 78 [2022-03-15 19:28:51,033 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 18 transitions, 52 flow [2022-03-15 19:28:51,049 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 19:28:51,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:28:51,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:28:51,056 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:28:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:28:51,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1933430541, now seen corresponding path program 1 times [2022-03-15 19:28:51,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:28:51,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419085409] [2022-03-15 19:28:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:28:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:51,383 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 19:28:51,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:28:51,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419085409] [2022-03-15 19:28:51,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419085409] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:28:51,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:28:51,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 19:28:51,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1014337914] [2022-03-15 19:28:51,386 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:28:51,391 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:28:51,413 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2022-03-15 19:28:51,413 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:28:51,650 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [160#(< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:28:51,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 19:28:51,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:28:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 19:28:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:28:51,669 INFO L87 Difference]: Start difference. First operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:28:51,703 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2022-03-15 19:28:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:28:51,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 19:28:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:28:51,712 INFO L225 Difference]: With dead ends: 42 [2022-03-15 19:28:51,712 INFO L226 Difference]: Without dead ends: 42 [2022-03-15 19:28:51,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:28:51,716 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:28:51,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:28:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-15 19:28:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-15 19:28:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2022-03-15 19:28:51,746 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2022-03-15 19:28:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:28:51,746 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2022-03-15 19:28:51,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2022-03-15 19:28:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 19:28:51,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:28:51,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:28:51,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:28:51,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:28:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:28:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1370657303, now seen corresponding path program 1 times [2022-03-15 19:28:51,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:28:51,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957491065] [2022-03-15 19:28:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:51,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:28:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:28:51,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:28:51,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957491065] [2022-03-15 19:28:51,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957491065] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:28:51,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045360608] [2022-03-15 19:28:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:51,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:51,835 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 19:28:51,846 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 19:28:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:51,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:28:51,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:28:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:28:51,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:28:52,054 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 19:28:52,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045360608] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 19:28:52,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 19:28:52,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 9 [2022-03-15 19:28:52,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [749597988] [2022-03-15 19:28:52,056 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:28:52,057 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:28:52,061 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2022-03-15 19:28:52,061 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:28:52,398 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [374#(<= (mod ~M~0 4294967296) 0), 375#(or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (mod ~M~0 4294967296) 0))] [2022-03-15 19:28:52,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 19:28:52,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:28:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 19:28:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:28:52,400 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:28:52,452 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2022-03-15 19:28:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:28:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 19:28:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:28:52,453 INFO L225 Difference]: With dead ends: 52 [2022-03-15 19:28:52,454 INFO L226 Difference]: Without dead ends: 52 [2022-03-15 19:28:52,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:28:52,455 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:28:52,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:28:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-15 19:28:52,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-03-15 19:28:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2022-03-15 19:28:52,461 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2022-03-15 19:28:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:28:52,462 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2022-03-15 19:28:52,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2022-03-15 19:28:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 19:28:52,463 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:28:52,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:28:52,491 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 19:28:52,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:52,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:28:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:28:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash 156458257, now seen corresponding path program 1 times [2022-03-15 19:28:52,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:28:52,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878743997] [2022-03-15 19:28:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:28:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:28:52,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:28:52,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878743997] [2022-03-15 19:28:52,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878743997] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:28:52,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259941480] [2022-03-15 19:28:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:52,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:52,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:52,758 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 19:28:52,786 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 19:28:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:52,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 19:28:52,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:28:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:28:52,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:28:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:28:53,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259941480] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:28:53,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:28:53,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-03-15 19:28:53,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [401869419] [2022-03-15 19:28:53,032 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:28:53,034 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:28:53,038 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 60 transitions. [2022-03-15 19:28:53,038 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:28:53,403 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [603#(< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296)), 625#(or (not (< 0 (mod ~counter~0 4294967296))) (not (< 0 (mod ~M~0 4294967296))) (<= (div (+ (- 2) (mod ~M~0 4294967296)) (- 4294967296)) 0)), 624#(or (<= (div (+ (- 2) (mod ~M~0 4294967296) (* (- 1) thread2Thread1of1ForFork1_~i~1)) (- 4294967296)) (+ (div (+ thread2Thread1of1ForFork1_~i~1 (- 4294967295)) 4294967296) 1)) (not (< 0 (mod ~counter~0 4294967296))) (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))))] [2022-03-15 19:28:53,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:28:53,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:28:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:28:53,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-03-15 19:28:53,405 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:28:53,524 INFO L93 Difference]: Finished difference Result 68 states and 144 transitions. [2022-03-15 19:28:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 19:28:53,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 19:28:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:28:53,526 INFO L225 Difference]: With dead ends: 68 [2022-03-15 19:28:53,526 INFO L226 Difference]: Without dead ends: 68 [2022-03-15 19:28:53,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:28:53,527 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:28:53,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 11 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:28:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-15 19:28:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 44. [2022-03-15 19:28:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 96 transitions. [2022-03-15 19:28:53,532 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 96 transitions. Word has length 15 [2022-03-15 19:28:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:28:53,532 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 96 transitions. [2022-03-15 19:28:53,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 96 transitions. [2022-03-15 19:28:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 19:28:53,533 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:28:53,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:28:53,559 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 19:28:53,755 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,SelfDestructingSolverStorable2 [2022-03-15 19:28:53,756 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:28:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:28:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1516346349, now seen corresponding path program 2 times [2022-03-15 19:28:53,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:28:53,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117272672] [2022-03-15 19:28:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:28:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:53,888 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 19:28:53,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:28:53,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117272672] [2022-03-15 19:28:53,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117272672] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:28:53,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907768863] [2022-03-15 19:28:53,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:28:53,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:53,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:53,891 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 19:28:53,917 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 19:28:53,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:28:53,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:28:53,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:28:53,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:28:54,019 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 19:28:54,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:28:54,131 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 19:28:54,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907768863] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:28:54,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:28:54,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 8 [2022-03-15 19:28:54,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1593309741] [2022-03-15 19:28:54,132 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:28:54,134 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:28:54,140 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2022-03-15 19:28:54,141 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:28:54,832 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [878#(and (<= ~counter~0 ~C~0) (<= (+ (* (div ~M~0 4294967296) 4294967296) 1) ~M~0) (<= ~C~0 ~counter~0))] [2022-03-15 19:28:54,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:28:54,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:28:54,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:28:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:28:54,834 INFO L87 Difference]: Start difference. First operand 44 states and 96 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) 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 19:28:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:28:54,997 INFO L93 Difference]: Finished difference Result 83 states and 185 transitions. [2022-03-15 19:28:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:28:54,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) 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 15 [2022-03-15 19:28:54,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:28:54,998 INFO L225 Difference]: With dead ends: 83 [2022-03-15 19:28:54,999 INFO L226 Difference]: Without dead ends: 78 [2022-03-15 19:28:54,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-15 19:28:55,000 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:28:55,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 16 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:28:55,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-15 19:28:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2022-03-15 19:28:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.2857142857142856) internal successors, (144), 63 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 144 transitions. [2022-03-15 19:28:55,006 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 144 transitions. Word has length 15 [2022-03-15 19:28:55,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:28:55,007 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 144 transitions. [2022-03-15 19:28:55,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) 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 19:28:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 144 transitions. [2022-03-15 19:28:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:28:55,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:28:55,008 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:28:55,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 19:28:55,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:55,221 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:28:55,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:28:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash -238286075, now seen corresponding path program 3 times [2022-03-15 19:28:55,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:28:55,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634519546] [2022-03-15 19:28:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:55,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:28:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:55,401 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 19:28:55,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:28:55,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634519546] [2022-03-15 19:28:55,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634519546] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:28:55,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246027469] [2022-03-15 19:28:55,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:28:55,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:55,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:55,403 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 19:28:55,431 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 19:28:55,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 19:28:55,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:28:55,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 19:28:55,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:28:55,653 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 19:28:55,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:28:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:28:56,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246027469] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:28:56,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:28:56,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-03-15 19:28:56,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1195864495] [2022-03-15 19:28:56,060 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:28:56,062 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:28:56,068 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 88 transitions. [2022-03-15 19:28:56,069 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:28:57,266 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [1207#(or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))), 1208#(and (or (<= (+ (* (div thread2Thread1of1ForFork1_~i~1 4294967296) 4294967296) 1) thread2Thread1of1ForFork1_~i~1) (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (= thread2Thread1of1ForFork1_~i~1 0)) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= ~counter~0 0) (= thread2Thread1of1ForFork1_~i~1 0)) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= ~counter~0 (* (div ~counter~0 4294967296) 4294967296))) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= 0 ~counter~0) (= thread2Thread1of1ForFork1_~i~1 0))), 1209#(and (= thread1Thread1of1ForFork0_~i~0 0) (= ~counter~0 0)), 1205#(and (<= ~counter~0 ~C~0) (<= (+ (* (div ~M~0 4294967296) 4294967296) 1) ~M~0) (<= ~C~0 ~counter~0)), 1206#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:28:57,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:28:57,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:28:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:28:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:28:57,268 INFO L87 Difference]: Start difference. First operand 64 states and 144 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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 19:28:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:28:57,523 INFO L93 Difference]: Finished difference Result 90 states and 203 transitions. [2022-03-15 19:28:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:28:57,524 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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 16 [2022-03-15 19:28:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:28:57,525 INFO L225 Difference]: With dead ends: 90 [2022-03-15 19:28:57,525 INFO L226 Difference]: Without dead ends: 72 [2022-03-15 19:28:57,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:28:57,526 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:28:57,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:28:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-15 19:28:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-03-15 19:28:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.272727272727273) internal successors, (125), 55 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 125 transitions. [2022-03-15 19:28:57,530 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 125 transitions. Word has length 16 [2022-03-15 19:28:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:28:57,530 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 125 transitions. [2022-03-15 19:28:57,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 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 19:28:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 125 transitions. [2022-03-15 19:28:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:28:57,531 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:28:57,531 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:28:57,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 19:28:57,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:57,759 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:28:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:28:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1223550761, now seen corresponding path program 4 times [2022-03-15 19:28:57,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:28:57,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486556696] [2022-03-15 19:28:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:28:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:57,872 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 19:28:57,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:28:57,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486556696] [2022-03-15 19:28:57,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486556696] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:28:57,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603634376] [2022-03-15 19:28:57,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:28:57,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:57,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:57,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:28:57,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 19:28:57,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:28:57,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:28:57,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:28:57,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:28:58,073 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 19:28:58,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:28:58,280 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 19:28:58,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603634376] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:28:58,280 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:28:58,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-03-15 19:28:58,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [714519131] [2022-03-15 19:28:58,281 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:28:58,282 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:28:58,288 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 88 transitions. [2022-03-15 19:28:58,288 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:28:58,753 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [1527#(= thread1Thread1of1ForFork0_~i~0 0), 1523#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)), 1525#(<= (+ 2 (* (div ~M~0 4294967296) 4294967296)) ~M~0), 1524#(and (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ 2 (* (div ~M~0 4294967296) 4294967296)) (+ ~M~0 (* (div thread2Thread1of1ForFork1_~i~1 4294967296) 4294967296)))) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ thread2Thread1of1ForFork1_~i~1 (* (div ~M~0 4294967296) 4294967296) 1) ~M~0))), 1526#(and (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (div thread1Thread1of1ForFork0_~i~0 4294967296) 0))] [2022-03-15 19:28:58,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:28:58,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:28:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:28:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:28:58,755 INFO L87 Difference]: Start difference. First operand 56 states and 125 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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 19:28:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:28:59,027 INFO L93 Difference]: Finished difference Result 76 states and 173 transitions. [2022-03-15 19:28:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 19:28:59,031 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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 16 [2022-03-15 19:28:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:28:59,032 INFO L225 Difference]: With dead ends: 76 [2022-03-15 19:28:59,032 INFO L226 Difference]: Without dead ends: 76 [2022-03-15 19:28:59,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:28:59,033 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:28:59,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 20 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:28:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-15 19:28:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2022-03-15 19:28:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:28:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 154 transitions. [2022-03-15 19:28:59,039 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 154 transitions. Word has length 16 [2022-03-15 19:28:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:28:59,039 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 154 transitions. [2022-03-15 19:28:59,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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 19:28:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 154 transitions. [2022-03-15 19:28:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:28:59,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:28:59,040 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:28:59,066 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 19:28:59,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:59,252 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:28:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:28:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash 501632849, now seen corresponding path program 5 times [2022-03-15 19:28:59,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:28:59,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590888716] [2022-03-15 19:28:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:28:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:28:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:28:59,366 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 19:28:59,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:28:59,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590888716] [2022-03-15 19:28:59,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590888716] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:28:59,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8222667] [2022-03-15 19:28:59,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:28:59,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:28:59,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:59,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:28:59,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 19:28:59,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:28:59,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:28:59,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:28:59,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:28:59,535 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 19:28:59,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:32:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:02,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8222667] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:32:02,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:32:02,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-03-15 19:32:02,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1030740004] [2022-03-15 19:32:02,531 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:32:02,534 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:32:02,539 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2022-03-15 19:32:02,539 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:32:02,887 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [1859#(and (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (div thread1Thread1of1ForFork0_~i~0 4294967296) 0)), 1860#(= thread1Thread1of1ForFork0_~i~0 0), 1857#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)), 1858#(or (< (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296) (mod ~M~0 4294967296)) (<= (mod ~M~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))), 1819#(< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:32:02,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:32:02,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:32:02,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:32:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:32:02,888 INFO L87 Difference]: Start difference. First operand 68 states and 154 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:32:03,375 INFO L93 Difference]: Finished difference Result 110 states and 243 transitions. [2022-03-15 19:32:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 19:32:03,376 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 19:32:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:32:03,377 INFO L225 Difference]: With dead ends: 110 [2022-03-15 19:32:03,377 INFO L226 Difference]: Without dead ends: 110 [2022-03-15 19:32:03,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2022-03-15 19:32:03,379 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:32:03,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 21 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:32:03,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-15 19:32:03,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 72. [2022-03-15 19:32:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.3098591549295775) internal successors, (164), 71 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 164 transitions. [2022-03-15 19:32:03,385 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 164 transitions. Word has length 16 [2022-03-15 19:32:03,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:32:03,386 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 164 transitions. [2022-03-15 19:32:03,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 164 transitions. [2022-03-15 19:32:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 19:32:03,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:32:03,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:32:03,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 19:32:03,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:32:03,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:32:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:32:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1203079885, now seen corresponding path program 6 times [2022-03-15 19:32:03,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:32:03,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44865126] [2022-03-15 19:32:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:32:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:32:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:32:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:03,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:32:03,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44865126] [2022-03-15 19:32:03,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44865126] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:32:03,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642570121] [2022-03-15 19:32:03,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:32:03,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:32:03,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:32:03,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:32:03,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 19:32:03,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:32:03,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:32:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 19:32:03,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:32:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:04,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:32:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:04,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642570121] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:32:04,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:32:04,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2022-03-15 19:32:04,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2087871032] [2022-03-15 19:32:04,421 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:32:04,423 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:32:04,428 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 65 transitions. [2022-03-15 19:32:04,428 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:32:04,981 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2262#(or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))), 2263#(and (or (not (< 0 (mod ~counter~0 4294967296))) (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296)))) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread2Thread1of1ForFork1_~i~1 0)) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0))), 2264#(and (or (not (< 0 (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0)) (or (not (< 0 (mod ~counter~0 4294967296))) (not (< 0 (mod ~M~0 4294967296))))), 2261#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:32:04,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:32:04,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:32:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:32:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:32:04,983 INFO L87 Difference]: Start difference. First operand 72 states and 164 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:32:05,289 INFO L93 Difference]: Finished difference Result 108 states and 238 transitions. [2022-03-15 19:32:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 19:32:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 19:32:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:32:05,291 INFO L225 Difference]: With dead ends: 108 [2022-03-15 19:32:05,291 INFO L226 Difference]: Without dead ends: 108 [2022-03-15 19:32:05,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2022-03-15 19:32:05,292 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:32:05,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:32:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-15 19:32:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 72. [2022-03-15 19:32:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.3098591549295775) internal successors, (164), 71 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 164 transitions. [2022-03-15 19:32:05,298 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 164 transitions. Word has length 17 [2022-03-15 19:32:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:32:05,299 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 164 transitions. [2022-03-15 19:32:05,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 164 transitions. [2022-03-15 19:32:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 19:32:05,300 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:32:05,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:32:05,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 19:32:05,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:32:05,516 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:32:05,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:32:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash 522103725, now seen corresponding path program 7 times [2022-03-15 19:32:05,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:32:05,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897680405] [2022-03-15 19:32:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:32:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:32:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:32:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:05,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:32:05,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897680405] [2022-03-15 19:32:05,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897680405] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:32:05,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531650644] [2022-03-15 19:32:05,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:32:05,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:32:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:32:05,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:32:05,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 19:32:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:32:05,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 19:32:05,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:32:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:05,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:32:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:54,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531650644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:32:54,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:32:54,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-15 19:32:54,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [863930497] [2022-03-15 19:32:54,371 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:32:54,373 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:32:54,378 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2022-03-15 19:32:54,378 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:32:54,877 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [2647#(or (< (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296) (mod ~M~0 4294967296)) (<= (mod ~M~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))), 2646#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)), 2649#(and (or (not (< 0 (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0)) (or (not (< 0 (mod ~counter~0 4294967296))) (not (< 0 (mod ~M~0 4294967296))))), 2648#(and (or (not (< 0 (mod ~counter~0 4294967296))) (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296)))) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread2Thread1of1ForFork1_~i~1 0)) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0))), 2603#(< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:32:54,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:32:54,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:32:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:32:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-03-15 19:32:54,878 INFO L87 Difference]: Start difference. First operand 72 states and 164 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:32:55,591 INFO L93 Difference]: Finished difference Result 114 states and 249 transitions. [2022-03-15 19:32:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 19:32:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 19:32:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:32:55,593 INFO L225 Difference]: With dead ends: 114 [2022-03-15 19:32:55,593 INFO L226 Difference]: Without dead ends: 110 [2022-03-15 19:32:55,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 19:32:55,595 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:32:55,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 22 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:32:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-15 19:32:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2022-03-15 19:32:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 65 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 147 transitions. [2022-03-15 19:32:55,600 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 147 transitions. Word has length 17 [2022-03-15 19:32:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:32:55,600 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 147 transitions. [2022-03-15 19:32:55,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 147 transitions. [2022-03-15 19:32:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 19:32:55,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:32:55,602 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:32:55,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-15 19:32:55,826 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,SelfDestructingSolverStorable8 [2022-03-15 19:32:55,827 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:32:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:32:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash 724249435, now seen corresponding path program 8 times [2022-03-15 19:32:55,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:32:55,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284610787] [2022-03-15 19:32:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:32:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:32:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:32:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:55,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:32:55,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284610787] [2022-03-15 19:32:55,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284610787] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:32:55,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015186969] [2022-03-15 19:32:55,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:32:55,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:32:55,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:32:55,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:32:55,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 19:32:56,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:32:56,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:32:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 19:32:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:32:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:56,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:32:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:56,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015186969] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:32:56,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:32:56,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2022-03-15 19:32:56,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [231175119] [2022-03-15 19:32:56,515 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:32:56,517 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:32:56,523 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 100 transitions. [2022-03-15 19:32:56,523 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:32:57,227 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:32:57,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 19:32:57,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:32:57,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 19:32:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:32:57,228 INFO L87 Difference]: Start difference. First operand 66 states and 147 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:32:57,309 INFO L93 Difference]: Finished difference Result 101 states and 226 transitions. [2022-03-15 19:32:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 19:32:57,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 19:32:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:32:57,311 INFO L225 Difference]: With dead ends: 101 [2022-03-15 19:32:57,311 INFO L226 Difference]: Without dead ends: 78 [2022-03-15 19:32:57,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:32:57,312 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:32:57,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:32:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-15 19:32:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2022-03-15 19:32:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.3066666666666666) internal successors, (173), 75 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 173 transitions. [2022-03-15 19:32:57,318 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 173 transitions. Word has length 17 [2022-03-15 19:32:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:32:57,318 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 173 transitions. [2022-03-15 19:32:57,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 173 transitions. [2022-03-15 19:32:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 19:32:57,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:32:57,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:32:57,350 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 19:32:57,535 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,SelfDestructingSolverStorable9 [2022-03-15 19:32:57,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:32:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:32:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1657339133, now seen corresponding path program 9 times [2022-03-15 19:32:57,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:32:57,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301082532] [2022-03-15 19:32:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:32:57,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:32:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:32:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:57,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:32:57,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301082532] [2022-03-15 19:32:57,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301082532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:32:57,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811352515] [2022-03-15 19:32:57,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:32:57,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:32:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:32:57,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:32:57,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 19:32:57,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 19:32:57,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:32:57,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 19:32:57,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:32:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:58,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:32:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:32:58,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811352515] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:32:58,338 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:32:58,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 3] total 14 [2022-03-15 19:32:58,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1373792684] [2022-03-15 19:32:58,338 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:32:58,339 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:32:58,344 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 69 transitions. [2022-03-15 19:32:58,344 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:32:59,061 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3397#(or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= ~counter~0 (* (div ~counter~0 4294967296) 4294967296))), 3400#(and (= thread1Thread1of1ForFork0_~i~0 0) (= ~counter~0 0)), 3399#(and (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ thread2Thread1of1ForFork1_~i~1 (* (div ~M~0 4294967296) 4294967296) 1) ~M~0) (<= ~counter~0 (* (div ~counter~0 4294967296) 4294967296))) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (not (<= (+ (div thread2Thread1of1ForFork1_~i~1 4294967296) 1) 0)) (<= ~counter~0 (* (div ~counter~0 4294967296) 4294967296)))), 3398#(and (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (div thread1Thread1of1ForFork0_~i~0 4294967296) 0) (<= ~counter~0 ~C~0) (<= ~C~0 ~counter~0))] [2022-03-15 19:32:59,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:32:59,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:32:59,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:32:59,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:32:59,063 INFO L87 Difference]: Start difference. First operand 76 states and 173 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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 19:32:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:32:59,380 INFO L93 Difference]: Finished difference Result 121 states and 267 transitions. [2022-03-15 19:32:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 19:32:59,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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 17 [2022-03-15 19:32:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:32:59,381 INFO L225 Difference]: With dead ends: 121 [2022-03-15 19:32:59,381 INFO L226 Difference]: Without dead ends: 116 [2022-03-15 19:32:59,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:32:59,382 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:32:59,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 12 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:32:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-15 19:32:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2022-03-15 19:32:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.392405063291139) internal successors, (189), 79 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:32:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 189 transitions. [2022-03-15 19:32:59,387 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 189 transitions. Word has length 17 [2022-03-15 19:32:59,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:32:59,387 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 189 transitions. [2022-03-15 19:32:59,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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 19:32:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 189 transitions. [2022-03-15 19:32:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 19:32:59,388 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:32:59,388 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:32:59,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 19:32:59,603 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,SelfDestructingSolverStorable10 [2022-03-15 19:32:59,603 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:32:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:32:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash -867647419, now seen corresponding path program 10 times [2022-03-15 19:32:59,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:32:59,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986050281] [2022-03-15 19:32:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:32:59,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:32:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:32:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:32:59,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:32:59,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986050281] [2022-03-15 19:32:59,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986050281] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:32:59,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96232435] [2022-03-15 19:32:59,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:32:59,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:32:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:32:59,728 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:32:59,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 19:32:59,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:32:59,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:32:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:32:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:32:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:32:59,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:33:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:33:00,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96232435] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:33:00,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:33:00,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 16 [2022-03-15 19:33:00,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [895014454] [2022-03-15 19:33:00,305 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:33:00,307 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:33:00,311 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 70 transitions. [2022-03-15 19:33:00,312 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:33:00,659 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3802#(or (<= (mod ~M~0 4294967296) 0) (= thread2Thread1of1ForFork1_~i~1 0)), 3800#(< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296)), 3801#(and (or (<= thread1Thread1of1ForFork0_~i~0 0) (<= (mod ~M~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (<= 0 thread1Thread1of1ForFork0_~i~0) (<= (mod ~M~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (= thread2Thread1of1ForFork1_~i~1 0) (<= (mod ~M~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)))), 3803#(or (<= (+ ~M~0 (* (div thread1Thread1of1ForFork0_~i~0 4294967296) 4294967296) 1) (+ thread1Thread1of1ForFork0_~i~0 (* (div ~M~0 4294967296) 4294967296))) (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296)))] [2022-03-15 19:33:00,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:33:00,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:33:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:33:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:33:00,660 INFO L87 Difference]: Start difference. First operand 80 states and 189 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:01,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:33:01,115 INFO L93 Difference]: Finished difference Result 138 states and 310 transitions. [2022-03-15 19:33:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 19:33:01,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 19:33:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:33:01,117 INFO L225 Difference]: With dead ends: 138 [2022-03-15 19:33:01,117 INFO L226 Difference]: Without dead ends: 136 [2022-03-15 19:33:01,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:33:01,118 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:33:01,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 23 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:33:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-03-15 19:33:01,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 74. [2022-03-15 19:33:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.3835616438356166) internal successors, (174), 73 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 174 transitions. [2022-03-15 19:33:01,123 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 174 transitions. Word has length 17 [2022-03-15 19:33:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:33:01,123 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 174 transitions. [2022-03-15 19:33:01,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 174 transitions. [2022-03-15 19:33:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:33:01,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:33:01,124 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:33:01,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 19:33:01,339 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,SelfDestructingSolverStorable11 [2022-03-15 19:33:01,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:33:01,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:33:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash 498079173, now seen corresponding path program 11 times [2022-03-15 19:33:01,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:33:01,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750457942] [2022-03-15 19:33:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:33:01,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:33:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:33:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:01,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:33:01,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750457942] [2022-03-15 19:33:01,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750457942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:33:01,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334256506] [2022-03-15 19:33:01,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:33:01,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:33:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:33:01,486 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:33:01,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 19:33:01,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 19:33:01,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:33:01,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 19:33:01,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:33:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:01,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:33:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:02,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334256506] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:33:02,386 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:33:02,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 19:33:02,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [309927844] [2022-03-15 19:33:02,386 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:33:02,388 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:33:02,395 INFO L252 McrAutomatonBuilder]: Finished intersection with 62 states and 112 transitions. [2022-03-15 19:33:02,395 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:33:03,804 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [4238#(and (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (div (+ (* (- 1) ~M~0) (* (div ~M~0 4294967296) 4294967296) 4294967298) 4294967296) 0)) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ (* (div (+ 4294967297 thread2Thread1of1ForFork1_~i~1 (* (- 1) ~M~0) (* (div ~M~0 4294967296) 4294967296)) 4294967296) 4294967296) 1) thread2Thread1of1ForFork1_~i~1) (= thread2Thread1of1ForFork1_~i~1 0))), 4236#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)), 4240#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 4237#(or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))), 4239#(and (<= (div thread1Thread1of1ForFork0_~i~0 4294967296) 0) (<= 2 thread1Thread1of1ForFork0_~i~0)), 4241#(= thread1Thread1of1ForFork0_~i~0 0), 4235#(<= (div (+ (* (- 1) ~M~0) (* (div ~M~0 4294967296) 4294967296) 4294967298) 4294967296) 0)] [2022-03-15 19:33:03,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:33:03,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:33:03,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:33:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:33:03,806 INFO L87 Difference]: Start difference. First operand 74 states and 174 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:33:04,275 INFO L93 Difference]: Finished difference Result 128 states and 295 transitions. [2022-03-15 19:33:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 19:33:04,276 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 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 19:33:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:33:04,277 INFO L225 Difference]: With dead ends: 128 [2022-03-15 19:33:04,277 INFO L226 Difference]: Without dead ends: 128 [2022-03-15 19:33:04,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 19:33:04,278 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:33:04,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 30 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:33:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-03-15 19:33:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2022-03-15 19:33:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3908045977011496) internal successors, (208), 87 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 208 transitions. [2022-03-15 19:33:04,282 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 208 transitions. Word has length 18 [2022-03-15 19:33:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:33:04,283 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 208 transitions. [2022-03-15 19:33:04,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 208 transitions. [2022-03-15 19:33:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:33:04,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:33:04,284 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:33:04,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 19:33:04,484 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,SelfDestructingSolverStorable12 [2022-03-15 19:33:04,485 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:33:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:33:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1883509395, now seen corresponding path program 12 times [2022-03-15 19:33:04,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:33:04,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032785404] [2022-03-15 19:33:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:33:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:33:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:33:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:04,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:33:04,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032785404] [2022-03-15 19:33:04,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032785404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:33:04,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924073797] [2022-03-15 19:33:04,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:33:04,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:33:04,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:33:04,690 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 19:33:04,691 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 19:33:04,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:33:04,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:33:04,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 19:33:04,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:33:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:05,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:33:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:05,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924073797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:33:05,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:33:05,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 19:33:05,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [27804454] [2022-03-15 19:33:05,411 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:33:05,413 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:33:05,417 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2022-03-15 19:33:05,417 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:33:05,898 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [4690#(or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))), 4693#(= thread1Thread1of1ForFork0_~i~0 0), 4692#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 4691#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 4689#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:33:05,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:33:05,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:33:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:33:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-03-15 19:33:05,899 INFO L87 Difference]: Start difference. First operand 88 states and 208 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 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 19:33:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:33:06,314 INFO L93 Difference]: Finished difference Result 154 states and 356 transitions. [2022-03-15 19:33:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 19:33:06,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 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 18 [2022-03-15 19:33:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:33:06,316 INFO L225 Difference]: With dead ends: 154 [2022-03-15 19:33:06,316 INFO L226 Difference]: Without dead ends: 154 [2022-03-15 19:33:06,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-03-15 19:33:06,317 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:33:06,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:33:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-03-15 19:33:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2022-03-15 19:33:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.4175824175824174) internal successors, (220), 91 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 220 transitions. [2022-03-15 19:33:06,322 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 220 transitions. Word has length 18 [2022-03-15 19:33:06,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:33:06,322 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 220 transitions. [2022-03-15 19:33:06,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 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 19:33:06,322 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 220 transitions. [2022-03-15 19:33:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:33:06,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:33:06,323 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:33:06,344 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 19:33:06,535 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,SelfDestructingSolverStorable13 [2022-03-15 19:33:06,536 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:33:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:33:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -158325785, now seen corresponding path program 13 times [2022-03-15 19:33:06,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:33:06,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593918458] [2022-03-15 19:33:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:33:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:33:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:33:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:06,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:33:06,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593918458] [2022-03-15 19:33:06,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593918458] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:33:06,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159339023] [2022-03-15 19:33:06,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:33:06,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:33:06,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:33:06,704 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 19:33:06,704 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 19:33:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:33:06,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 19:33:06,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:33:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:07,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:33:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:07,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159339023] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:33:07,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:33:07,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-15 19:33:07,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1502939265] [2022-03-15 19:33:07,337 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:33:07,338 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:33:07,342 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2022-03-15 19:33:07,342 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:33:07,758 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [5177#(or (< (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296) (mod ~M~0 4294967296)) (<= (mod ~M~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))), 5178#(<= (+ 2 (* (div thread1Thread1of1ForFork0_~i~0 4294967296) 4294967296)) thread1Thread1of1ForFork0_~i~0), 5180#(= thread1Thread1of1ForFork0_~i~0 0), 5176#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)), 5179#(and (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (div thread1Thread1of1ForFork0_~i~0 4294967296) 0)), 5130#(< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:33:07,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:33:07,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:33:07,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:33:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-03-15 19:33:07,759 INFO L87 Difference]: Start difference. First operand 92 states and 220 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 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 19:33:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:33:08,549 INFO L93 Difference]: Finished difference Result 168 states and 393 transitions. [2022-03-15 19:33:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 19:33:08,549 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 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 18 [2022-03-15 19:33:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:33:08,550 INFO L225 Difference]: With dead ends: 168 [2022-03-15 19:33:08,550 INFO L226 Difference]: Without dead ends: 168 [2022-03-15 19:33:08,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=348, Invalid=1374, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 19:33:08,552 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:33:08,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 30 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:33:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-03-15 19:33:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 112. [2022-03-15 19:33:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5765765765765765) internal successors, (286), 111 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 286 transitions. [2022-03-15 19:33:08,558 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 286 transitions. Word has length 18 [2022-03-15 19:33:08,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:33:08,559 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 286 transitions. [2022-03-15 19:33:08,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 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 19:33:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 286 transitions. [2022-03-15 19:33:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:33:08,560 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:33:08,560 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:33:08,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 19:33:08,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:33:08,775 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:33:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:33:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash 161711791, now seen corresponding path program 14 times [2022-03-15 19:33:08,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:33:08,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035928615] [2022-03-15 19:33:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:33:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:33:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:33:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:09,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:33:09,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035928615] [2022-03-15 19:33:09,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035928615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:33:09,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254257042] [2022-03-15 19:33:09,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:33:09,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:33:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:33:09,058 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 19:33:09,058 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 19:33:09,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:33:09,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:33:09,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 19:33:09,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:33:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:09,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:33:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:11,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254257042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:33:11,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:33:11,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2022-03-15 19:33:11,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [63145172] [2022-03-15 19:33:11,846 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:33:11,848 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:33:11,852 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2022-03-15 19:33:11,852 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:33:12,883 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5747#(and (<= ~counter~0 ~C~0) (<= (+ (* (div ~M~0 4294967296) 4294967296) 1) ~M~0) (<= ~C~0 ~counter~0))] [2022-03-15 19:33:12,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:33:12,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:33:12,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:33:12,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2022-03-15 19:33:12,884 INFO L87 Difference]: Start difference. First operand 112 states and 286 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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 19:33:13,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:33:13,215 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2022-03-15 19:33:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:33:13,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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 18 [2022-03-15 19:33:13,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:33:13,216 INFO L225 Difference]: With dead ends: 164 [2022-03-15 19:33:13,217 INFO L226 Difference]: Without dead ends: 152 [2022-03-15 19:33:13,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:33:13,217 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:33:13,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 23 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:33:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-03-15 19:33:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2022-03-15 19:33:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.5546218487394956) internal successors, (304), 119 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:33:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 304 transitions. [2022-03-15 19:33:13,222 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 304 transitions. Word has length 18 [2022-03-15 19:33:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:33:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 304 transitions. [2022-03-15 19:33:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 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 19:33:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 304 transitions. [2022-03-15 19:33:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:33:13,223 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:33:13,223 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:33:13,249 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 19:33:13,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 19:33:13,448 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:33:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:33:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash -823552895, now seen corresponding path program 15 times [2022-03-15 19:33:13,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:33:13,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388929834] [2022-03-15 19:33:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:33:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:33:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:33:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:13,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:33:13,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388929834] [2022-03-15 19:33:13,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388929834] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:33:13,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542132379] [2022-03-15 19:33:13,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:33:13,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:33:13,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:33:13,683 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 19:33:13,683 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 19:33:13,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:33:13,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:33:13,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:33:13,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:33:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:33:13,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:35:01,877 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-03-15 19:36:43,126 WARN L228 SmtUtils]: Spent 18.32s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:37:30,880 WARN L228 SmtUtils]: Spent 18.71s on a formula simplification. DAG size of input: 85 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 19:37:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:37:38,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542132379] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:37:38,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:37:38,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-15 19:37:38,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1082911332] [2022-03-15 19:37:38,237 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:37:38,238 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:37:38,241 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 72 transitions. [2022-03-15 19:37:38,242 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:37:41,719 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [6281#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)), 6282#(and (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (not (<= (+ (div thread2Thread1of1ForFork1_~i~1 4294967296) 1) 0))) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ thread2Thread1of1ForFork1_~i~1 (* (div ~M~0 4294967296) 4294967296) 1) (+ ~M~0 (* (div thread2Thread1of1ForFork1_~i~1 4294967296) 4294967296))))), 6283#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (+ (* (div ~M~0 4294967296) 4294967296) 1) ~M~0)), 6284#(= thread1Thread1of1ForFork0_~i~0 0)] [2022-03-15 19:37:41,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:37:41,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:37:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:37:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=484, Unknown=11, NotChecked=0, Total=600 [2022-03-15 19:37:41,720 INFO L87 Difference]: Start difference. First operand 120 states and 304 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:37:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:37:42,651 INFO L93 Difference]: Finished difference Result 166 states and 417 transitions. [2022-03-15 19:37:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 19:37:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 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 18 [2022-03-15 19:37:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:37:42,652 INFO L225 Difference]: With dead ends: 166 [2022-03-15 19:37:42,652 INFO L226 Difference]: Without dead ends: 166 [2022-03-15 19:37:42,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 77.0s TimeCoverageRelationStatistics Valid=179, Invalid=802, Unknown=11, NotChecked=0, Total=992 [2022-03-15 19:37:42,653 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:37:42,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 13 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:37:42,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-03-15 19:37:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 124. [2022-03-15 19:37:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.5528455284552845) internal successors, (314), 123 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:37:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 314 transitions. [2022-03-15 19:37:42,657 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 314 transitions. Word has length 18 [2022-03-15 19:37:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:37:42,658 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 314 transitions. [2022-03-15 19:37:42,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:37:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 314 transitions. [2022-03-15 19:37:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 19:37:42,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:37:42,658 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:37:42,679 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 19:37:42,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 19:37:42,871 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:37:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:37:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1304245471, now seen corresponding path program 16 times [2022-03-15 19:37:42,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:37:42,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741515863] [2022-03-15 19:37:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:37:42,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:37:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:37:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:37:43,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:37:43,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741515863] [2022-03-15 19:37:43,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741515863] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:37:43,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610570880] [2022-03-15 19:37:43,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:37:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:37:43,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:37:43,100 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 19:37:43,103 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 19:37:43,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:37:43,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:37:43,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 19:37:43,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:37:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:37:43,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:37:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:37:44,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610570880] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:37:44,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:37:44,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 19:37:44,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1185503221] [2022-03-15 19:37:44,521 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:37:44,522 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:37:44,526 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 80 transitions. [2022-03-15 19:37:44,526 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:37:45,362 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [6851#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)), 6854#(and (or (not (< 0 (mod ~counter~0 4294967296))) (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296)))) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread2Thread1of1ForFork1_~i~1 0)) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0))), 6852#(or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))), 6853#(and (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ 3 (* (div ~M~0 4294967296) 4294967296)) ~M~0)) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ (* (div (+ 4294967297 thread2Thread1of1ForFork1_~i~1 (* (- 1) ~M~0) (* (div ~M~0 4294967296) 4294967296)) 4294967296) 4294967296) 1) thread2Thread1of1ForFork1_~i~1) (= thread2Thread1of1ForFork1_~i~1 0))), 6855#(and (or (not (< 0 (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0)) (or (not (< 0 (mod ~counter~0 4294967296))) (not (< 0 (mod ~M~0 4294967296)))))] [2022-03-15 19:37:45,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:37:45,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:37:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:37:45,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:37:45,363 INFO L87 Difference]: Start difference. First operand 124 states and 314 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 19:37:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:37:45,667 INFO L93 Difference]: Finished difference Result 174 states and 421 transitions. [2022-03-15 19:37:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 19:37:45,668 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 19 [2022-03-15 19:37:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:37:45,669 INFO L225 Difference]: With dead ends: 174 [2022-03-15 19:37:45,669 INFO L226 Difference]: Without dead ends: 174 [2022-03-15 19:37:45,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 19:37:45,670 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:37:45,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 17 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:37:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-03-15 19:37:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 126. [2022-03-15 19:37:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.568) internal successors, (321), 125 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:37:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 321 transitions. [2022-03-15 19:37:45,674 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 321 transitions. Word has length 19 [2022-03-15 19:37:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:37:45,675 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 321 transitions. [2022-03-15 19:37:45,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 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 19:37:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 321 transitions. [2022-03-15 19:37:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 19:37:45,675 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:37:45,675 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:37:45,693 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 19:37:45,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 19:37:45,883 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:37:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:37:45,884 INFO L85 PathProgramCache]: Analyzing trace with hash 609133257, now seen corresponding path program 17 times [2022-03-15 19:37:45,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:37:45,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343308833] [2022-03-15 19:37:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:37:45,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:37:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:37:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:37:46,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:37:46,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343308833] [2022-03-15 19:37:46,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343308833] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:37:46,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946575131] [2022-03-15 19:37:46,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:37:46,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:37:46,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:37:46,057 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 19:37:46,058 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 19:37:46,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:37:46,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:37:46,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 19:37:46,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:37:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:37:46,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:41:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:41:48,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946575131] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:41:48,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:41:48,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-03-15 19:41:48,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [872463467] [2022-03-15 19:41:48,352 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:41:48,354 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:41:48,359 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 71 transitions. [2022-03-15 19:41:48,359 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:41:49,092 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [7427#(and (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (not (<= (+ (div thread2Thread1of1ForFork1_~i~1 4294967296) 1) 0))) (or (< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296)) (<= (+ thread2Thread1of1ForFork1_~i~1 (* (div ~M~0 4294967296) 4294967296) 1) ~M~0))), 7425#(and (or (not (< 0 (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0)) (or (not (< 0 (mod ~counter~0 4294967296))) (not (< 0 (mod ~M~0 4294967296))))), 7424#(and (or (not (< 0 (mod ~counter~0 4294967296))) (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296)))) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread2Thread1of1ForFork1_~i~1 0)) (or (not (< (mod thread2Thread1of1ForFork1_~i~1 4294967296) (mod ~M~0 4294967296))) (= thread1Thread1of1ForFork0_~i~0 0))), 7426#(< (mod thread1Thread1of1ForFork0_~i~0 4294967296) (mod ~M~0 4294967296))] [2022-03-15 19:41:49,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:41:49,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:41:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:41:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:41:49,093 INFO L87 Difference]: Start difference. First operand 126 states and 321 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:41:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:41:49,655 INFO L93 Difference]: Finished difference Result 184 states and 452 transitions. [2022-03-15 19:41:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 19:41:49,656 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 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 19 [2022-03-15 19:41:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:41:49,657 INFO L225 Difference]: With dead ends: 184 [2022-03-15 19:41:49,657 INFO L226 Difference]: Without dead ends: 184 [2022-03-15 19:41:49,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 19:41:49,658 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:41:49,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 10 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:41:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-03-15 19:41:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 126. [2022-03-15 19:41:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.568) internal successors, (321), 125 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:41:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 321 transitions. [2022-03-15 19:41:49,662 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 321 transitions. Word has length 19 [2022-03-15 19:41:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:41:49,663 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 321 transitions. [2022-03-15 19:41:49,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:41:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 321 transitions. [2022-03-15 19:41:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 19:41:49,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:41:49,663 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:41:49,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-15 19:41:49,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:41:49,867 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:41:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:41:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1960650429, now seen corresponding path program 18 times [2022-03-15 19:41:49,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:41:49,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428227000] [2022-03-15 19:41:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:41:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:41:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:41:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:41:50,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:41:50,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428227000] [2022-03-15 19:41:50,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428227000] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:41:50,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513172960] [2022-03-15 19:41:50,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:41:50,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:41:50,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:41:50,179 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 19:41:50,181 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 19:41:50,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 19:41:50,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:41:50,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 19:41:50,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:41:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:41:50,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-03-15 19:43:16,112 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 19:43:16,122 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 19:43:17,146 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 [2022-03-15 19:43:17,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown