/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:56:32,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:56:32,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:56:32,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:56:32,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:56:32,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:56:32,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:56:32,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:56:32,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:56:32,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:56:32,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:56:32,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:56:32,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:56:32,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:56:32,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:56:32,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:56:32,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:56:32,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:56:32,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:56:32,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:56:32,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:56:32,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:56:32,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:56:32,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:56:32,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:56:32,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:56:32,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:56:32,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:56:32,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:56:32,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:56:32,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:56:32,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:56:32,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:56:32,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:56:32,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:56:32,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:56:32,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:56:32,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:56:32,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:56:32,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:56:32,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:56:32,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:56:32,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:56:32,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:56:32,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:56:32,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:56:32,485 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:56:32,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:56:32,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:56:32,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:56:32,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:56:32,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:56:32,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:56:32,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:56:32,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:56:32,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:56:32,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:56:32,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:56:32,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:56:32,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:56:32,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:56:32,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:56:32,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:56:32,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:56:32,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:56:32,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:56:32,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:56:32,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:56:32,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:56:32,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:56:32,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:56:32,490 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:56:32,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:56:32,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:56:32,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:56:32,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:56:32,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:56:32,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 13:56:33,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4130339cc/5dd2265b86d34ec59578268038fd5e6b/FLAG1c9d3d307 [2020-10-29 13:56:33,834 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:56:33,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 13:56:33,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4130339cc/5dd2265b86d34ec59578268038fd5e6b/FLAG1c9d3d307 [2020-10-29 13:56:34,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4130339cc/5dd2265b86d34ec59578268038fd5e6b [2020-10-29 13:56:34,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:56:34,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:56:34,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:56:34,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:56:34,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:56:34,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:56:34" (1/1) ... [2020-10-29 13:56:34,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66de8fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:34, skipping insertion in model container [2020-10-29 13:56:34,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:56:34" (1/1) ... [2020-10-29 13:56:34,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:56:34,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:56:35,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:56:35,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:56:35,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:56:35,444 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:56:35,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35 WrapperNode [2020-10-29 13:56:35,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:56:35,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:56:35,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:56:35,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:56:35,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... [2020-10-29 13:56:35,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... [2020-10-29 13:56:35,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... [2020-10-29 13:56:35,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... [2020-10-29 13:56:35,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... [2020-10-29 13:56:35,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... [2020-10-29 13:56:35,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... [2020-10-29 13:56:35,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:56:35,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:56:35,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:56:35,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:56:35,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:56:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:56:35,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:56:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:56:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:56:35,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:56:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:56:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:56:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:56:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:56:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:56:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:56:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:56:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:56:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:56:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:56:35,738 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:56:35,738 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:56:35,739 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:56:35,739 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:56:35,739 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:56:35,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:56:35,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:56:35,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:56:35,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:56:35,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:56:35,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:56:35,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:56:37,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:56:37,483 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:56:37,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:56:37 BoogieIcfgContainer [2020-10-29 13:56:37,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:56:37,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:56:37,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:56:37,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:56:37,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:56:34" (1/3) ... [2020-10-29 13:56:37,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67586542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:56:37, skipping insertion in model container [2020-10-29 13:56:37,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:56:35" (2/3) ... [2020-10-29 13:56:37,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67586542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:56:37, skipping insertion in model container [2020-10-29 13:56:37,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:56:37" (3/3) ... [2020-10-29 13:56:37,494 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 13:56:37,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:56:37,511 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:56:37,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:56:37,552 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:56:37,552 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:56:37,552 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:56:37,552 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:56:37,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:56:37,553 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:56:37,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:56:37,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:56:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-10-29 13:56:37,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 13:56:37,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:37,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:56:37,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:37,603 INFO L82 PathProgramCache]: Analyzing trace with hash 424531033, now seen corresponding path program 1 times [2020-10-29 13:56:37,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:37,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248903165] [2020-10-29 13:56:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:43,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:43,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 13:56:43,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:56:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:56:43,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:43,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 13:56:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:56:43,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:56:43,659 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:56:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:43,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:43,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:43,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:56:43,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:43,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:43,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:56:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:43,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248903165] [2020-10-29 13:56:43,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:43,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:56:43,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988540718] [2020-10-29 13:56:43,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:56:43,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:43,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:56:43,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:56:43,811 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 4 states. [2020-10-29 13:56:44,364 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 13:56:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:47,426 INFO L93 Difference]: Finished difference Result 759 states and 1332 transitions. [2020-10-29 13:56:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:56:47,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-29 13:56:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:47,451 INFO L225 Difference]: With dead ends: 759 [2020-10-29 13:56:47,451 INFO L226 Difference]: Without dead ends: 591 [2020-10-29 13:56:47,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:56:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-29 13:56:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 588. [2020-10-29 13:56:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-10-29 13:56:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 871 transitions. [2020-10-29 13:56:47,589 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 871 transitions. Word has length 147 [2020-10-29 13:56:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:47,590 INFO L481 AbstractCegarLoop]: Abstraction has 588 states and 871 transitions. [2020-10-29 13:56:47,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:56:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 871 transitions. [2020-10-29 13:56:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 13:56:47,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:47,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:56:47,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:56:47,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:47,598 INFO L82 PathProgramCache]: Analyzing trace with hash -656363333, now seen corresponding path program 1 times [2020-10-29 13:56:47,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:47,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061076089] [2020-10-29 13:56:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:47,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:49,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:50,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:52,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:52,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 13:56:52,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:56:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:56:52,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:52,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 13:56:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 13:56:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:56:53,199 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:56:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:53,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:53,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:53,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:56:53,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:53,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:53,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:53,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061076089] [2020-10-29 13:56:53,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:53,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:56:53,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880194215] [2020-10-29 13:56:53,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:56:53,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:53,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:56:53,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:56:53,279 INFO L87 Difference]: Start difference. First operand 588 states and 871 transitions. Second operand 4 states. [2020-10-29 13:56:53,759 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 13:56:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:56,183 INFO L93 Difference]: Finished difference Result 1190 states and 1812 transitions. [2020-10-29 13:56:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:56:56,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-29 13:56:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:56,197 INFO L225 Difference]: With dead ends: 1190 [2020-10-29 13:56:56,197 INFO L226 Difference]: Without dead ends: 977 [2020-10-29 13:56:56,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:56:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-10-29 13:56:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 974. [2020-10-29 13:56:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2020-10-29 13:56:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1463 transitions. [2020-10-29 13:56:56,276 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1463 transitions. Word has length 147 [2020-10-29 13:56:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:56,276 INFO L481 AbstractCegarLoop]: Abstraction has 974 states and 1463 transitions. [2020-10-29 13:56:56,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:56:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1463 transitions. [2020-10-29 13:56:56,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 13:56:56,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:56,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:56:56,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:56:56,282 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -666860398, now seen corresponding path program 1 times [2020-10-29 13:56:56,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:56,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625987920] [2020-10-29 13:56:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:57,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:57,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:01,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:01,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 13:57:01,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:57:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:57:01,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:01,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:57:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:57:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:01,992 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:57:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:02,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:02,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:02,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:57:02,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:02,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:57:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:02,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625987920] [2020-10-29 13:57:02,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:02,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:57:02,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118641674] [2020-10-29 13:57:02,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:57:02,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:02,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:57:02,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:02,109 INFO L87 Difference]: Start difference. First operand 974 states and 1463 transitions. Second operand 5 states. [2020-10-29 13:57:04,639 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:57:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:05,943 INFO L93 Difference]: Finished difference Result 2830 states and 4239 transitions. [2020-10-29 13:57:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:57:05,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 13:57:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:05,954 INFO L225 Difference]: With dead ends: 2830 [2020-10-29 13:57:05,954 INFO L226 Difference]: Without dead ends: 1881 [2020-10-29 13:57:05,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:57:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-10-29 13:57:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1844. [2020-10-29 13:57:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2020-10-29 13:57:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2750 transitions. [2020-10-29 13:57:06,053 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2750 transitions. Word has length 147 [2020-10-29 13:57:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:06,054 INFO L481 AbstractCegarLoop]: Abstraction has 1844 states and 2750 transitions. [2020-10-29 13:57:06,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:57:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2750 transitions. [2020-10-29 13:57:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 13:57:06,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:06,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:57:06,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:57:06,059 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:06,060 INFO L82 PathProgramCache]: Analyzing trace with hash -237625010, now seen corresponding path program 1 times [2020-10-29 13:57:06,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:06,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599510585] [2020-10-29 13:57:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:09,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:11,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 13:57:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:57:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:57:11,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:11,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:57:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 13:57:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:11,761 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:57:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:11,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:11,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:11,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:57:11,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:11,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:11,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599510585] [2020-10-29 13:57:11,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:11,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:57:11,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953359475] [2020-10-29 13:57:11,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:57:11,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:11,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:57:11,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:11,914 INFO L87 Difference]: Start difference. First operand 1844 states and 2750 transitions. Second operand 5 states. [2020-10-29 13:57:14,776 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:57:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:16,245 INFO L93 Difference]: Finished difference Result 5351 states and 7947 transitions. [2020-10-29 13:57:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:57:16,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-29 13:57:16,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:16,266 INFO L225 Difference]: With dead ends: 5351 [2020-10-29 13:57:16,266 INFO L226 Difference]: Without dead ends: 3540 [2020-10-29 13:57:16,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:57:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2020-10-29 13:57:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3509. [2020-10-29 13:57:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3509 states. [2020-10-29 13:57:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5170 transitions. [2020-10-29 13:57:16,542 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5170 transitions. Word has length 148 [2020-10-29 13:57:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:16,543 INFO L481 AbstractCegarLoop]: Abstraction has 3509 states and 5170 transitions. [2020-10-29 13:57:16,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:57:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5170 transitions. [2020-10-29 13:57:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 13:57:16,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:16,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:57:16,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:57:16,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:16,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1087740046, now seen corresponding path program 1 times [2020-10-29 13:57:16,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:16,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600053622] [2020-10-29 13:57:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:16,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:17,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:21,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:21,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 13:57:21,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:57:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 13:57:21,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:21,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:57:21,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:57:22,142 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:57:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:22,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:22,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:22,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:57:22,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:22,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:57:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:22,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600053622] [2020-10-29 13:57:22,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:22,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:57:22,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965781674] [2020-10-29 13:57:22,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:57:22,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:22,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:57:22,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:22,257 INFO L87 Difference]: Start difference. First operand 3509 states and 5170 transitions. Second operand 5 states. [2020-10-29 13:57:25,028 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:57:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:26,380 INFO L93 Difference]: Finished difference Result 10214 states and 14991 transitions. [2020-10-29 13:57:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:57:26,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-29 13:57:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:26,414 INFO L225 Difference]: With dead ends: 10214 [2020-10-29 13:57:26,414 INFO L226 Difference]: Without dead ends: 6756 [2020-10-29 13:57:26,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:57:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6756 states. [2020-10-29 13:57:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6756 to 6715. [2020-10-29 13:57:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6715 states. [2020-10-29 13:57:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 9773 transitions. [2020-10-29 13:57:26,799 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 9773 transitions. Word has length 149 [2020-10-29 13:57:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:26,799 INFO L481 AbstractCegarLoop]: Abstraction has 6715 states and 9773 transitions. [2020-10-29 13:57:26,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:57:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 9773 transitions. [2020-10-29 13:57:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 13:57:26,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:26,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:57:26,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:57:26,810 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:26,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1929507217, now seen corresponding path program 1 times [2020-10-29 13:57:26,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:26,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194211105] [2020-10-29 13:57:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:31,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 13:57:31,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:57:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 13:57:31,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:31,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:57:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 13:57:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:32,399 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:57:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:32,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:57:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:32,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:32,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194211105] [2020-10-29 13:57:32,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:32,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:57:32,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136685460] [2020-10-29 13:57:32,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:57:32,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:32,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:57:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:32,566 INFO L87 Difference]: Start difference. First operand 6715 states and 9773 transitions. Second operand 5 states. [2020-10-29 13:57:35,664 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:57:36,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:36,773 INFO L93 Difference]: Finished difference Result 17789 states and 25844 transitions. [2020-10-29 13:57:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:57:36,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-29 13:57:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:36,827 INFO L225 Difference]: With dead ends: 17789 [2020-10-29 13:57:36,827 INFO L226 Difference]: Without dead ends: 11596 [2020-10-29 13:57:36,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:57:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11596 states. [2020-10-29 13:57:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11596 to 11569. [2020-10-29 13:57:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11569 states. [2020-10-29 13:57:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 16550 transitions. [2020-10-29 13:57:37,541 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 16550 transitions. Word has length 150 [2020-10-29 13:57:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:37,542 INFO L481 AbstractCegarLoop]: Abstraction has 11569 states and 16550 transitions. [2020-10-29 13:57:37,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:57:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 16550 transitions. [2020-10-29 13:57:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 13:57:37,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:37,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:57:37,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:57:37,561 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:37,561 INFO L82 PathProgramCache]: Analyzing trace with hash -45934641, now seen corresponding path program 1 times [2020-10-29 13:57:37,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:37,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281510518] [2020-10-29 13:57:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:37,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:41,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 13:57:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:57:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4138 [2020-10-29 13:57:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:41,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:57:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 13:57:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:42,207 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:57:42,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:42,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:42,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:42,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:42,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:57:42,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:42,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:42,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:42,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:42,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281510518] [2020-10-29 13:57:42,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:42,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:57:42,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590089899] [2020-10-29 13:57:42,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:57:42,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:42,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:57:42,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:42,276 INFO L87 Difference]: Start difference. First operand 11569 states and 16550 transitions. Second operand 5 states. [2020-10-29 13:57:45,258 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:57:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:46,467 INFO L93 Difference]: Finished difference Result 31259 states and 44460 transitions. [2020-10-29 13:57:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:57:46,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 13:57:46,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:46,511 INFO L225 Difference]: With dead ends: 31259 [2020-10-29 13:57:46,511 INFO L226 Difference]: Without dead ends: 19774 [2020-10-29 13:57:46,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:57:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19774 states. [2020-10-29 13:57:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19774 to 19723. [2020-10-29 13:57:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19723 states. [2020-10-29 13:57:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19723 states to 19723 states and 27714 transitions. [2020-10-29 13:57:47,639 INFO L78 Accepts]: Start accepts. Automaton has 19723 states and 27714 transitions. Word has length 151 [2020-10-29 13:57:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:47,639 INFO L481 AbstractCegarLoop]: Abstraction has 19723 states and 27714 transitions. [2020-10-29 13:57:47,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:57:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 19723 states and 27714 transitions. [2020-10-29 13:57:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 13:57:47,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:47,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:57:47,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:57:47,666 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:47,667 INFO L82 PathProgramCache]: Analyzing trace with hash 765162192, now seen corresponding path program 1 times [2020-10-29 13:57:47,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:47,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22175639] [2020-10-29 13:57:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:48,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:48,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:48,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 13:57:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:49,086 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:57:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:49,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:49,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:49,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:57:49,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:49,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:49,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:49,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:49,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:49,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:49,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22175639] [2020-10-29 13:57:49,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:49,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:57:49,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765267053] [2020-10-29 13:57:49,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:57:49,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:49,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:57:49,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:49,259 INFO L87 Difference]: Start difference. First operand 19723 states and 27714 transitions. Second operand 5 states. [2020-10-29 13:57:53,154 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-29 13:57:55,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:55,726 INFO L93 Difference]: Finished difference Result 56681 states and 79501 transitions. [2020-10-29 13:57:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:57:55,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 13:57:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:55,792 INFO L225 Difference]: With dead ends: 56681 [2020-10-29 13:57:55,793 INFO L226 Difference]: Without dead ends: 38030 [2020-10-29 13:57:55,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:57:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38030 states. [2020-10-29 13:57:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38030 to 37979. [2020-10-29 13:57:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37979 states. [2020-10-29 13:57:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37979 states to 37979 states and 52519 transitions. [2020-10-29 13:57:58,187 INFO L78 Accepts]: Start accepts. Automaton has 37979 states and 52519 transitions. Word has length 152 [2020-10-29 13:57:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:58,187 INFO L481 AbstractCegarLoop]: Abstraction has 37979 states and 52519 transitions. [2020-10-29 13:57:58,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:57:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 37979 states and 52519 transitions. [2020-10-29 13:57:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 13:57:58,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:58,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-10-29 13:57:58,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:57:58,220 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:58,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:58,221 INFO L82 PathProgramCache]: Analyzing trace with hash 236832847, now seen corresponding path program 1 times [2020-10-29 13:57:58,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:58,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217435178] [2020-10-29 13:57:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 13:57:58,271 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 13:57:58,272 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 13:57:58,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:57:58,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 01:57:58 BoogieIcfgContainer [2020-10-29 13:57:58,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 13:57:58,329 INFO L168 Benchmark]: Toolchain (without parser) took 84276.75 ms. Allocated memory was 151.0 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 106.9 MB in the beginning and 1.0 GB in the end (delta: -897.1 MB). Peak memory consumption was 577.7 MB. Max. memory is 8.0 GB. [2020-10-29 13:57:58,329 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 13:57:58,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1388.11 ms. Allocated memory is still 151.0 MB. Free memory was 106.3 MB in the beginning and 120.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2020-10-29 13:57:58,331 INFO L168 Benchmark]: Boogie Preprocessor took 191.98 ms. Allocated memory is still 151.0 MB. Free memory was 120.6 MB in the beginning and 115.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 13:57:58,332 INFO L168 Benchmark]: RCFGBuilder took 1845.48 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 115.4 MB in the beginning and 111.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 75.9 MB. Max. memory is 8.0 GB. [2020-10-29 13:57:58,332 INFO L168 Benchmark]: TraceAbstraction took 80840.03 ms. Allocated memory was 190.8 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 110.7 MB in the beginning and 1.0 GB in the end (delta: -893.3 MB). Peak memory consumption was 541.2 MB. Max. memory is 8.0 GB. [2020-10-29 13:57:58,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1388.11 ms. Allocated memory is still 151.0 MB. Free memory was 106.3 MB in the beginning and 120.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 191.98 ms. Allocated memory is still 151.0 MB. Free memory was 120.6 MB in the beginning and 115.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1845.48 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 115.4 MB in the beginning and 111.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 75.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 80840.03 ms. Allocated memory was 190.8 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 110.7 MB in the beginning and 1.0 GB in the end (delta: -893.3 MB). Peak memory consumption was 541.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_3069; [L77] int __return_3038; [L78] int __return_2975; [L79] int __return_2941; [L80] int __tmp_2420_0; [L81] int __return_2543; [L82] int __return_2433; [L83] int __return_2828; [L84] int __return_2794; [L85] int __return_2710; [L86] int __return_2419; [L89] int main__c1; [L90] int main__i2; [L91] main__c1 = 0 [L92] ep12 = __VERIFIER_nondet_bool() [L93] ep13 = __VERIFIER_nondet_bool() [L94] ep21 = __VERIFIER_nondet_bool() [L95] ep23 = __VERIFIER_nondet_bool() [L96] ep31 = __VERIFIER_nondet_bool() [L97] ep32 = __VERIFIER_nondet_bool() [L98] id1 = __VERIFIER_nondet_char() [L99] r1 = __VERIFIER_nondet_char() [L100] st1 = __VERIFIER_nondet_char() [L101] nl1 = __VERIFIER_nondet_char() [L102] m1 = __VERIFIER_nondet_char() [L103] max1 = __VERIFIER_nondet_char() [L104] mode1 = __VERIFIER_nondet_bool() [L105] newmax1 = __VERIFIER_nondet_bool() [L106] id2 = __VERIFIER_nondet_char() [L107] r2 = __VERIFIER_nondet_char() [L108] st2 = __VERIFIER_nondet_char() [L109] nl2 = __VERIFIER_nondet_char() [L110] m2 = __VERIFIER_nondet_char() [L111] max2 = __VERIFIER_nondet_char() [L112] mode2 = __VERIFIER_nondet_bool() [L113] newmax2 = __VERIFIER_nondet_bool() [L114] id3 = __VERIFIER_nondet_char() [L115] r3 = __VERIFIER_nondet_char() [L116] st3 = __VERIFIER_nondet_char() [L117] nl3 = __VERIFIER_nondet_char() [L118] m3 = __VERIFIER_nondet_char() [L119] max3 = __VERIFIER_nondet_char() [L120] mode3 = __VERIFIER_nondet_bool() [L121] newmax3 = __VERIFIER_nondet_bool() [L123] _Bool init__r121; [L124] _Bool init__r131; [L125] _Bool init__r211; [L126] _Bool init__r231; [L127] _Bool init__r311; [L128] _Bool init__r321; [L129] _Bool init__r122; [L130] int init__tmp; [L131] _Bool init__r132; [L132] int init__tmp___0; [L133] _Bool init__r212; [L134] int init__tmp___1; [L135] _Bool init__r232; [L136] int init__tmp___2; [L137] _Bool init__r312; [L138] int init__tmp___3; [L139] _Bool init__r322; [L140] int init__tmp___4; [L141] int init__tmp___5; [L142] init__r121 = ep12 [L143] init__r131 = ep13 [L144] init__r211 = ep21 [L145] init__r231 = ep23 [L146] init__r311 = ep31 [L147] init__r321 = ep32 [L148] COND FALSE !(!(init__r121 == 0)) [L3142] COND FALSE !(!(init__r131 == 0)) [L3158] init__tmp = 0 [L152] init__r122 = (_Bool)init__tmp [L153] COND FALSE !(!(init__r131 == 0)) [L3119] COND FALSE !(!(init__r121 == 0)) [L3135] init__tmp___0 = 0 [L157] init__r132 = (_Bool)init__tmp___0 [L158] COND FALSE !(!(init__r211 == 0)) [L3096] COND FALSE !(!(init__r231 == 0)) [L3112] init__tmp___1 = 0 [L162] init__r212 = (_Bool)init__tmp___1 [L163] COND FALSE !(!(init__r231 == 0)) [L3073] COND FALSE !(!(init__r211 == 0)) [L3089] init__tmp___2 = 0 [L167] init__r232 = (_Bool)init__tmp___2 [L168] COND FALSE !(!(init__r311 == 0)) [L3050] COND FALSE !(!(init__r321 == 0)) [L3066] init__tmp___3 = 0 [L172] init__r312 = (_Bool)init__tmp___3 [L173] COND FALSE !(!(init__r321 == 0)) [L3027] COND FALSE !(!(init__r311 == 0)) [L3043] init__tmp___4 = 0 [L177] init__r322 = (_Bool)init__tmp___4 [L178] COND TRUE ((int)id1) != ((int)id2) [L180] COND TRUE ((int)id1) != ((int)id3) [L182] COND TRUE ((int)id2) != ((int)id3) [L184] COND TRUE ((int)id1) >= 0 [L186] COND TRUE ((int)id2) >= 0 [L188] COND TRUE ((int)id3) >= 0 [L190] COND TRUE ((int)r1) == 0 [L192] COND TRUE ((int)r2) == 0 [L194] COND TRUE ((int)r3) == 0 [L196] COND TRUE ((int)max1) == ((int)id1) [L198] COND TRUE ((int)max2) == ((int)id2) [L200] COND TRUE ((int)max3) == ((int)id3) [L202] COND TRUE ((int)st1) == 0 [L204] COND TRUE ((int)st2) == 0 [L206] COND TRUE ((int)st3) == 0 [L208] COND TRUE ((int)nl1) == 0 [L210] COND TRUE ((int)nl2) == 0 [L212] COND TRUE ((int)nl3) == 0 [L214] COND TRUE ((int)mode1) == 0 [L216] COND TRUE ((int)mode2) == 0 [L218] COND TRUE ((int)mode3) == 0 [L220] COND TRUE !(newmax1 == 0) [L222] COND TRUE !(newmax2 == 0) [L224] COND TRUE !(newmax3 == 0) [L226] init__tmp___5 = 1 [L227] __return_1863 = init__tmp___5 [L228] main__i2 = __return_1863 [L229] COND TRUE main__i2 != 0 [L231] p12_old = nomsg [L232] p12_new = nomsg [L233] p13_old = nomsg [L234] p13_new = nomsg [L235] p21_old = nomsg [L236] p21_new = nomsg [L237] p23_old = nomsg [L238] p23_new = nomsg [L239] p31_old = nomsg [L240] p31_new = nomsg [L241] p32_old = nomsg [L242] p32_new = nomsg [L243] main__i2 = 0 [L244] COND TRUE main__i2 < 6 [L247] _Bool node1__newmax; [L248] node1__newmax = 0 [L249] COND FALSE !(!(mode1 == 0)) [L255] COND TRUE ((int)r1) < 2 [L257] COND FALSE !(!(ep12 == 0)) [L270] COND FALSE !(!(ep13 == 0)) [L283] mode1 = 1 [L285] _Bool node2__newmax; [L286] node2__newmax = 0 [L287] COND FALSE !(!(mode2 == 0)) [L293] COND TRUE ((int)r2) < 2 [L295] COND FALSE !(!(ep21 == 0)) [L308] COND FALSE !(!(ep23 == 0)) [L321] mode2 = 1 [L323] _Bool node3__newmax; [L324] node3__newmax = 0 [L325] COND FALSE !(!(mode3 == 0)) [L331] COND TRUE ((int)r3) < 2 [L333] COND FALSE !(!(ep31 == 0)) [L346] COND FALSE !(!(ep32 == 0)) [L359] mode3 = 1 [L360] p12_old = p12_new [L361] p12_new = nomsg [L362] p13_old = p13_new [L363] p13_new = nomsg [L364] p21_old = p21_new [L365] p21_new = nomsg [L366] p23_old = p23_new [L367] p23_new = nomsg [L368] p31_old = p31_new [L369] p31_new = nomsg [L370] p32_old = p32_new [L371] p32_new = nomsg [L373] int check__tmp; [L374] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L376] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L378] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L380] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] COND FALSE !(((int)r1) >= 2) [L398] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L400] COND TRUE ((int)r1) < 2 [L402] check__tmp = 1 [L403] __return_2009 = check__tmp [L404] main__c1 = __return_2009 [L406] _Bool __tmp_1; [L407] __tmp_1 = main__c1 [L408] _Bool assert__arg; [L409] assert__arg = __tmp_1 [L410] COND FALSE !(assert__arg == 0) [L416] int main____CPAchecker_TMP_0 = main__i2; [L417] main__i2 = main__i2 + 1 [L418] COND TRUE main__i2 < 6 [L421] _Bool node1__newmax; [L422] node1__newmax = 0 [L423] COND TRUE !(mode1 == 0) [L425] r1 = (char)(((int)r1) + 1) [L426] COND FALSE !(!(ep21 == 0)) [L435] COND FALSE !(!(ep31 == 0)) [L444] newmax1 = node1__newmax [L445] COND FALSE !(((int)r1) == 2) [L451] mode1 = 0 [L453] _Bool node2__newmax; [L454] node2__newmax = 0 [L455] COND TRUE !(mode2 == 0) [L457] r2 = (char)(((int)r2) + 1) [L458] COND FALSE !(!(ep12 == 0)) [L467] COND FALSE !(!(ep32 == 0)) [L476] newmax2 = node2__newmax [L477] COND FALSE !(((int)r2) == 2) [L483] mode2 = 0 [L485] _Bool node3__newmax; [L486] node3__newmax = 0 [L487] COND TRUE !(mode3 == 0) [L489] r3 = (char)(((int)r3) + 1) [L490] COND FALSE !(!(ep13 == 0)) [L499] COND FALSE !(!(ep23 == 0)) [L508] newmax3 = node3__newmax [L509] COND FALSE !(((int)r3) == 2) [L515] mode3 = 0 [L516] p12_old = p12_new [L517] p12_new = nomsg [L518] p13_old = p13_new [L519] p13_new = nomsg [L520] p21_old = p21_new [L521] p21_new = nomsg [L522] p23_old = p23_new [L523] p23_new = nomsg [L524] p31_old = p31_new [L525] p31_new = nomsg [L526] p32_old = p32_new [L527] p32_new = nomsg [L529] int check__tmp; [L530] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L532] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L534] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L536] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L538] COND FALSE !(((int)r1) >= 2) [L544] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L546] COND TRUE ((int)r1) < 2 [L548] COND FALSE !(((int)r1) >= 2) [L554] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L556] COND TRUE ((int)r1) < 2 [L558] check__tmp = 1 [L559] __return_2142 = check__tmp [L560] main__c1 = __return_2142 [L562] _Bool __tmp_2; [L563] __tmp_2 = main__c1 [L564] _Bool assert__arg; [L565] assert__arg = __tmp_2 [L566] COND FALSE !(assert__arg == 0) [L572] int main____CPAchecker_TMP_0 = main__i2; [L573] main__i2 = main__i2 + 1 [L574] COND TRUE main__i2 < 6 [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2281 = check__tmp [L734] main__c1 = __return_2281 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L746] int main____CPAchecker_TMP_0 = main__i2; [L747] main__i2 = main__i2 + 1 [L748] COND TRUE main__i2 < 6 [L751] _Bool node1__newmax; [L752] node1__newmax = 0 [L753] COND TRUE !(mode1 == 0) [L755] r1 = (char)(((int)r1) + 1) [L756] COND FALSE !(!(ep21 == 0)) [L765] COND FALSE !(!(ep31 == 0)) [L774] newmax1 = node1__newmax [L775] COND TRUE ((int)r1) == 2 [L777] COND TRUE ((int)max1) == ((int)id1) [L779] st1 = 1 [L780] mode1 = 0 [L782] _Bool node2__newmax; [L783] node2__newmax = 0 [L784] COND TRUE !(mode2 == 0) [L786] r2 = (char)(((int)r2) + 1) [L787] COND FALSE !(!(ep12 == 0)) [L796] COND FALSE !(!(ep32 == 0)) [L805] newmax2 = node2__newmax [L806] COND TRUE ((int)r2) == 2 [L808] COND TRUE ((int)max2) == ((int)id2) [L810] st2 = 1 [L811] mode2 = 0 [L813] _Bool node3__newmax; [L814] node3__newmax = 0 [L815] COND TRUE !(mode3 == 0) [L817] r3 = (char)(((int)r3) + 1) [L818] COND FALSE !(!(ep13 == 0)) [L827] COND FALSE !(!(ep23 == 0)) [L836] newmax3 = node3__newmax [L837] COND TRUE ((int)r3) == 2 [L839] COND TRUE ((int)max3) == ((int)id3) [L841] st3 = 1 [L842] mode3 = 0 [L843] p12_old = p12_new [L844] p12_new = nomsg [L845] p13_old = p13_new [L846] p13_new = nomsg [L847] p21_old = p21_new [L848] p21_new = nomsg [L849] p23_old = p23_new [L850] p23_new = nomsg [L851] p31_old = p31_new [L852] p31_new = nomsg [L853] p32_old = p32_new [L854] p32_new = nomsg [L856] int check__tmp; [L857] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L863] check__tmp = 0 [L864] __return_3069 = check__tmp [L865] main__c1 = __return_3069 [L867] _Bool __tmp_4; [L868] __tmp_4 = main__c1 [L869] _Bool assert__arg; [L870] assert__arg = __tmp_4 [L871] COND TRUE assert__arg == 0 [L873] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 420 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 80.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 34.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7115 SDtfs, 7933 SDslu, 4054 SDs, 0 SdLazy, 7769 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37979occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 244 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 39.8s InterpolantComputationTime, 1344 NumberOfCodeBlocks, 1344 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1183 ConstructedInterpolants, 0 QuantifiedInterpolants, 1259158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...