/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/mix039.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 10:29:49,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 10:29:49,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 10:29:49,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 10:29:49,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 10:29:49,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 10:29:49,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 10:29:49,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 10:29:49,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 10:29:49,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 10:29:49,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 10:29:49,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 10:29:49,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 10:29:49,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 10:29:49,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 10:29:49,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 10:29:49,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 10:29:49,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 10:29:49,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 10:29:49,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 10:29:49,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 10:29:49,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 10:29:49,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 10:29:49,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 10:29:49,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 10:29:49,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 10:29:49,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 10:29:49,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 10:29:49,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 10:29:49,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 10:29:49,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 10:29:49,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 10:29:49,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 10:29:49,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 10:29:49,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 10:29:49,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 10:29:49,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 10:29:49,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 10:29:49,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 10:29:49,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 10:29:49,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 10:29:49,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-09-16 10:29:49,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 10:29:49,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 10:29:49,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 10:29:49,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 10:29:49,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 10:29:49,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 10:29:49,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 10:29:49,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 10:29:49,318 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 10:29:49,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 10:29:49,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 10:29:49,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 10:29:49,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 10:29:49,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 10:29:49,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 10:29:49,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 10:29:49,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 10:29:49,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 10:29:49,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 10:29:49,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 10:29:49,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 10:29:49,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 10:29:49,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 10:29:49,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 10:29:49,321 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 10:29:49,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 10:29:49,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 10:29:49,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 10:29:49,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 10:29:49,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 10:29:49,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 10:29:49,527 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 10:29:49,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix039.oepc.i [2022-09-16 10:29:49,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52495c2e/93e0b49363a74193bdf8dd75c8166084/FLAGc9704bc00 [2022-09-16 10:29:50,020 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 10:29:50,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix039.oepc.i [2022-09-16 10:29:50,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52495c2e/93e0b49363a74193bdf8dd75c8166084/FLAGc9704bc00 [2022-09-16 10:29:50,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c52495c2e/93e0b49363a74193bdf8dd75c8166084 [2022-09-16 10:29:50,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 10:29:50,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 10:29:50,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 10:29:50,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 10:29:50,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 10:29:50,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e6e7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50, skipping insertion in model container [2022-09-16 10:29:50,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 10:29:50,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 10:29:50,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix039.oepc.i[945,958] [2022-09-16 10:29:50,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 10:29:50,806 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 10:29:50,815 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix039.oepc.i[945,958] [2022-09-16 10:29:50,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 10:29:50,891 INFO L208 MainTranslator]: Completed translation [2022-09-16 10:29:50,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50 WrapperNode [2022-09-16 10:29:50,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 10:29:50,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 10:29:50,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 10:29:50,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 10:29:50,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,967 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 196 [2022-09-16 10:29:50,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 10:29:50,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 10:29:50,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 10:29:50,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 10:29:50,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:50,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 10:29:51,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 10:29:51,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 10:29:51,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 10:29:51,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (1/1) ... [2022-09-16 10:29:51,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 10:29:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:29:51,032 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) [2022-09-16 10:29:51,055 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 [2022-09-16 10:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 10:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 10:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 10:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 10:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 10:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-16 10:29:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-16 10:29:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-16 10:29:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-16 10:29:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-16 10:29:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-16 10:29:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-09-16 10:29:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-09-16 10:29:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 10:29:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 10:29:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 10:29:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 10:29:51,070 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 10:29:51,236 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 10:29:51,237 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 10:29:51,717 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 10:29:52,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 10:29:52,049 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 10:29:52,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 10:29:52 BoogieIcfgContainer [2022-09-16 10:29:52,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 10:29:52,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 10:29:52,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 10:29:52,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 10:29:52,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 10:29:50" (1/3) ... [2022-09-16 10:29:52,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dea3e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 10:29:52, skipping insertion in model container [2022-09-16 10:29:52,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:29:50" (2/3) ... [2022-09-16 10:29:52,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dea3e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 10:29:52, skipping insertion in model container [2022-09-16 10:29:52,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 10:29:52" (3/3) ... [2022-09-16 10:29:52,057 INFO L112 eAbstractionObserver]: Analyzing ICFG mix039.oepc.i [2022-09-16 10:29:52,063 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 10:29:52,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 10:29:52,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 10:29:52,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 10:29:52,124 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 10:29:52,160 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 157 places, 146 transitions, 312 flow [2022-09-16 10:30:03,473 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 401146 states, 401066 states have (on average 4.624665267063277) internal successors, (1854796), 401145 states have internal predecessors, (1854796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:30:03,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 10:30:03,523 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1df05175, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 10:30:03,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-09-16 10:30:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 401146 states, 401066 states have (on average 4.624665267063277) internal successors, (1854796), 401145 states have internal predecessors, (1854796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:30:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-09-16 10:30:04,411 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:30:04,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:30:04,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 10:30:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:30:04,415 INFO L85 PathProgramCache]: Analyzing trace with hash -454084231, now seen corresponding path program 1 times [2022-09-16 10:30:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:30:04,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172843416] [2022-09-16 10:30:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:30:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:30:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:30:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:30:04,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:30:04,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172843416] [2022-09-16 10:30:04,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172843416] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:30:04,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:30:04,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 10:30:04,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65781527] [2022-09-16 10:30:04,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:30:04,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 10:30:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:30:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 10:30:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 10:30:05,498 INFO L87 Difference]: Start difference. First operand has 401146 states, 401066 states have (on average 4.624665267063277) internal successors, (1854796), 401145 states have internal predecessors, (1854796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:30:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:30:12,268 INFO L93 Difference]: Finished difference Result 316735 states and 1417619 transitions. [2022-09-16 10:30:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 10:30:12,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-09-16 10:30:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:30:16,440 INFO L225 Difference]: With dead ends: 316735 [2022-09-16 10:30:16,441 INFO L226 Difference]: Without dead ends: 316735 [2022-09-16 10:30:16,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 10:30:16,450 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 66 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:30:16,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 194 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:30:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316735 states. [2022-09-16 10:30:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316735 to 316735. [2022-09-16 10:30:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316735 states, 316543 states have (on average 4.478440527827183) internal successors, (1417619), 316734 states have internal predecessors, (1417619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:30:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316735 states to 316735 states and 1417619 transitions. [2022-09-16 10:30:34,855 INFO L78 Accepts]: Start accepts. Automaton has 316735 states and 1417619 transitions. Word has length 54 [2022-09-16 10:30:34,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:30:34,856 INFO L495 AbstractCegarLoop]: Abstraction has 316735 states and 1417619 transitions. [2022-09-16 10:30:34,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:30:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 316735 states and 1417619 transitions. [2022-09-16 10:30:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-09-16 10:30:34,859 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:30:34,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:30:34,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 10:30:34,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 10:30:34,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:30:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1718561714, now seen corresponding path program 1 times [2022-09-16 10:30:34,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:30:34,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281980653] [2022-09-16 10:30:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:30:34,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:30:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:30:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:30:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:30:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281980653] [2022-09-16 10:30:35,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281980653] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:30:35,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:30:35,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:30:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479284479] [2022-09-16 10:30:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:30:35,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:30:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:30:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:30:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:30:35,408 INFO L87 Difference]: Start difference. First operand 316735 states and 1417619 transitions. Second operand has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:30:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:30:41,099 INFO L93 Difference]: Finished difference Result 287455 states and 1242591 transitions. [2022-09-16 10:30:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 10:30:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-09-16 10:30:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:30:45,635 INFO L225 Difference]: With dead ends: 287455 [2022-09-16 10:30:45,636 INFO L226 Difference]: Without dead ends: 287455 [2022-09-16 10:30:45,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:30:45,641 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 242 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 10:30:45,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 255 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 10:30:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287455 states. [2022-09-16 10:31:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287455 to 278815. [2022-09-16 10:31:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278815 states, 278707 states have (on average 4.378781300792588) internal successors, (1220397), 278814 states have internal predecessors, (1220397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:31:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278815 states to 278815 states and 1220397 transitions. [2022-09-16 10:31:06,767 INFO L78 Accepts]: Start accepts. Automaton has 278815 states and 1220397 transitions. Word has length 66 [2022-09-16 10:31:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:31:06,769 INFO L495 AbstractCegarLoop]: Abstraction has 278815 states and 1220397 transitions. [2022-09-16 10:31:06,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:31:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 278815 states and 1220397 transitions. [2022-09-16 10:31:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-09-16 10:31:06,771 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:31:06,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:31:06,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 10:31:06,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 10:31:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:31:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1718561715, now seen corresponding path program 1 times [2022-09-16 10:31:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:31:06,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757570121] [2022-09-16 10:31:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:31:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:31:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:31:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:31:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:31:06,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757570121] [2022-09-16 10:31:06,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757570121] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:31:06,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:31:06,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:31:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314561744] [2022-09-16 10:31:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:31:06,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:31:06,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:31:06,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:31:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:31:06,945 INFO L87 Difference]: Start difference. First operand 278815 states and 1220397 transitions. Second operand has 4 states, 3 states have (on average 22.0) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)