/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=SHALLOWEST --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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:50:48,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:50:48,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:50:48,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:50:48,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:50:48,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:50:48,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:50:48,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:50:48,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:50:48,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:50:48,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:50:48,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:50:48,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:50:48,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:50:48,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:50:48,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:50:48,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:50:48,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:50:48,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:50:48,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:50:48,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:50:48,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:50:48,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:50:48,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:50:48,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:50:48,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:50:48,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:50:48,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:50:48,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:50:48,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:50:48,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:50:48,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:50:48,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:50:48,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:50:48,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:50:48,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:50:48,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:50:48,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:50:48,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:50:48,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:50:48,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:50:48,889 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 [2020-10-27 04:50:48,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:50:48,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:50:48,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:50:48,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:50:48,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:50:48,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:50:48,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:50:48,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:50:48,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:50:48,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:50:48,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:50:48,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:50:48,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:50:48,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:50:48,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:50:48,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:50:48,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:50:48,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:50:48,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:50:48,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:50:48,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:50:48,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:50:48,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:50:48,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:50:48,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:50:48,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:50:48,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:50:48,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:50:48,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:50:48,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:50:49,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:50:49,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:50:49,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:50:49,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:50:49,430 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:50:49,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:50:49,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b34c59953/500a7b075eb9423ea8bebd0a4eab1e92/FLAG27d6df347 [2020-10-27 04:50:50,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:50:50,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:50:50,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b34c59953/500a7b075eb9423ea8bebd0a4eab1e92/FLAG27d6df347 [2020-10-27 04:50:50,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b34c59953/500a7b075eb9423ea8bebd0a4eab1e92 [2020-10-27 04:50:50,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:50:50,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:50:50,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:50:50,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:50:50,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:50:50,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:50:50" (1/1) ... [2020-10-27 04:50:50,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbed540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:50, skipping insertion in model container [2020-10-27 04:50:50,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:50:50" (1/1) ... [2020-10-27 04:50:50,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:50:50,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:50:51,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:50:51,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:50:51,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:50:51,480 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:50:51,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51 WrapperNode [2020-10-27 04:50:51,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:50:51,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:50:51,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:50:51,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:50:51,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (1/1) ... [2020-10-27 04:50:51,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (1/1) ... [2020-10-27 04:50:51,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (1/1) ... [2020-10-27 04:50:51,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (1/1) ... [2020-10-27 04:50:51,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (1/1) ... [2020-10-27 04:50:51,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (1/1) ... [2020-10-27 04:50:51,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (1/1) ... [2020-10-27 04:50:51,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:50:51,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:50:51,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:50:51,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:50:51,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (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 [2020-10-27 04:50:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:50:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:50:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:50:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:50:51,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:50:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:50:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:50:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:50:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:50:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:50:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:50:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:50:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:50:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:50:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:50:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:50:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:50:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:50:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:50:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:50:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:50:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:50:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:50:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:50:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:50:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:50:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:50:53,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:50:53,253 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:50:53,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:50:53 BoogieIcfgContainer [2020-10-27 04:50:53,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:50:53,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:50:53,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:50:53,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:50:53,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:50:50" (1/3) ... [2020-10-27 04:50:53,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45314907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:50:53, skipping insertion in model container [2020-10-27 04:50:53,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:51" (2/3) ... [2020-10-27 04:50:53,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45314907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:50:53, skipping insertion in model container [2020-10-27 04:50:53,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:50:53" (3/3) ... [2020-10-27 04:50:53,267 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 04:50:53,280 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:50:53,287 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:50:53,305 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:50:53,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:50:53,369 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:50:53,369 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:50:53,369 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:50:53,369 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:50:53,369 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:50:53,370 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:50:53,370 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:50:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-10-27 04:50:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 04:50:53,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:50:53,416 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] [2020-10-27 04:50:53,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:50:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:50:53,425 INFO L82 PathProgramCache]: Analyzing trace with hash -450222276, now seen corresponding path program 1 times [2020-10-27 04:50:53,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:50:53,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134446098] [2020-10-27 04:50:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:50:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:50:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:54,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:55,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:58,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:50:58,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 04:50:58,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:50:58,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 04:50:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:50:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:50:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:50:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:50:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 04:50:59,607 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:50:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:50:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:50:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:59,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:50:59,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:50:59,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:50:59,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:50:59,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:50:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:50:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:50:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:50:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:50:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:50:59,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134446098] [2020-10-27 04:50:59,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:50:59,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:50:59,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866599457] [2020-10-27 04:50:59,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:50:59,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:50:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:50:59,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:50:59,769 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 5 states. [2020-10-27 04:51:02,833 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:51:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:03,804 INFO L93 Difference]: Finished difference Result 860 states and 1518 transitions. [2020-10-27 04:51:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:51:03,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-27 04:51:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:03,851 INFO L225 Difference]: With dead ends: 860 [2020-10-27 04:51:03,852 INFO L226 Difference]: Without dead ends: 567 [2020-10-27 04:51:03,862 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 [2020-10-27 04:51:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-27 04:51:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 564. [2020-10-27 04:51:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-27 04:51:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 818 transitions. [2020-10-27 04:51:04,021 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 818 transitions. Word has length 143 [2020-10-27 04:51:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:04,022 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 818 transitions. [2020-10-27 04:51:04,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 818 transitions. [2020-10-27 04:51:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:51:04,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:04,036 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] [2020-10-27 04:51:04,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:51:04,036 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:04,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1460972903, now seen corresponding path program 1 times [2020-10-27 04:51:04,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:04,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974917696] [2020-10-27 04:51:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:09,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:51:09,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:51:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:51:09,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:51:09,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:09,577 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:51:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:09,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:09,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:09,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:51:09,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:09,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974917696] [2020-10-27 04:51:09,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:09,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:09,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869372934] [2020-10-27 04:51:09,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:09,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:09,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:09,718 INFO L87 Difference]: Start difference. First operand 564 states and 818 transitions. Second operand 5 states. [2020-10-27 04:51:12,097 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:51:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:13,125 INFO L93 Difference]: Finished difference Result 1628 states and 2354 transitions. [2020-10-27 04:51:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:13,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 04:51:13,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:13,134 INFO L225 Difference]: With dead ends: 1628 [2020-10-27 04:51:13,134 INFO L226 Difference]: Without dead ends: 1089 [2020-10-27 04:51:13,140 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 [2020-10-27 04:51:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-10-27 04:51:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1086. [2020-10-27 04:51:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-10-27 04:51:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1560 transitions. [2020-10-27 04:51:13,216 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1560 transitions. Word has length 144 [2020-10-27 04:51:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:13,218 INFO L481 AbstractCegarLoop]: Abstraction has 1086 states and 1560 transitions. [2020-10-27 04:51:13,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1560 transitions. [2020-10-27 04:51:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 04:51:13,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:13,223 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] [2020-10-27 04:51:13,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:51:13,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:13,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1495268647, now seen corresponding path program 1 times [2020-10-27 04:51:13,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:13,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417469721] [2020-10-27 04:51:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:13,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:14,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:17,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:18,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 04:51:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 04:51:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:51:18,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:51:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:51:18,676 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:51:18,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:18,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:18,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:51:18,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:18,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:18,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417469721] [2020-10-27 04:51:18,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:18,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:18,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279716033] [2020-10-27 04:51:18,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:18,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:18,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:18,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:18,785 INFO L87 Difference]: Start difference. First operand 1086 states and 1560 transitions. Second operand 5 states. [2020-10-27 04:51:20,959 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:51:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:21,926 INFO L93 Difference]: Finished difference Result 3130 states and 4477 transitions. [2020-10-27 04:51:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:21,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-27 04:51:21,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:21,943 INFO L225 Difference]: With dead ends: 3130 [2020-10-27 04:51:21,943 INFO L226 Difference]: Without dead ends: 2073 [2020-10-27 04:51:21,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:51:21,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2020-10-27 04:51:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2070. [2020-10-27 04:51:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-27 04:51:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2931 transitions. [2020-10-27 04:51:22,127 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2931 transitions. Word has length 145 [2020-10-27 04:51:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:22,137 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 2931 transitions. [2020-10-27 04:51:22,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2931 transitions. [2020-10-27 04:51:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:51:22,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:22,146 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] [2020-10-27 04:51:22,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:51:22,146 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1330649623, now seen corresponding path program 1 times [2020-10-27 04:51:22,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:22,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205383541] [2020-10-27 04:51:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:26,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 04:51:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 04:51:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:51:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:51:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:27,664 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:51:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:27,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:27,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:27,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:27,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:51:27,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:27,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:27,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205383541] [2020-10-27 04:51:27,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:27,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:27,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944875082] [2020-10-27 04:51:27,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:27,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:27,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:27,766 INFO L87 Difference]: Start difference. First operand 2070 states and 2931 transitions. Second operand 5 states. [2020-10-27 04:51:29,961 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:51:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:31,003 INFO L93 Difference]: Finished difference Result 5984 states and 8447 transitions. [2020-10-27 04:51:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:31,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 04:51:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:31,023 INFO L225 Difference]: With dead ends: 5984 [2020-10-27 04:51:31,023 INFO L226 Difference]: Without dead ends: 3979 [2020-10-27 04:51:31,028 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 [2020-10-27 04:51:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2020-10-27 04:51:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3976. [2020-10-27 04:51:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3976 states. [2020-10-27 04:51:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5555 transitions. [2020-10-27 04:51:31,290 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5555 transitions. Word has length 146 [2020-10-27 04:51:31,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:31,290 INFO L481 AbstractCegarLoop]: Abstraction has 3976 states and 5555 transitions. [2020-10-27 04:51:31,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:31,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5555 transitions. [2020-10-27 04:51:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 04:51:31,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:31,298 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] [2020-10-27 04:51:31,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:51:31,299 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash -261296134, now seen corresponding path program 1 times [2020-10-27 04:51:31,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:31,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850753884] [2020-10-27 04:51:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:33,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:35,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:36,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 04:51:36,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 04:51:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:51:36,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 04:51:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:36,767 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:51:36,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:36,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:36,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:36,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:51:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:36,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:51:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:36,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850753884] [2020-10-27 04:51:36,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:36,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:36,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312260367] [2020-10-27 04:51:36,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:36,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:36,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:36,885 INFO L87 Difference]: Start difference. First operand 3976 states and 5555 transitions. Second operand 5 states. [2020-10-27 04:51:39,236 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:51:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:40,300 INFO L93 Difference]: Finished difference Result 11480 states and 15971 transitions. [2020-10-27 04:51:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:40,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 04:51:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:40,339 INFO L225 Difference]: With dead ends: 11480 [2020-10-27 04:51:40,339 INFO L226 Difference]: Without dead ends: 7625 [2020-10-27 04:51:40,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:51:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2020-10-27 04:51:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7622. [2020-10-27 04:51:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7622 states. [2020-10-27 04:51:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7622 states to 7622 states and 10479 transitions. [2020-10-27 04:51:40,850 INFO L78 Accepts]: Start accepts. Automaton has 7622 states and 10479 transitions. Word has length 147 [2020-10-27 04:51:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:40,851 INFO L481 AbstractCegarLoop]: Abstraction has 7622 states and 10479 transitions. [2020-10-27 04:51:40,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7622 states and 10479 transitions. [2020-10-27 04:51:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:51:40,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:40,866 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] [2020-10-27 04:51:40,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:51:40,867 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:40,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1473782920, now seen corresponding path program 1 times [2020-10-27 04:51:40,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:40,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959509390] [2020-10-27 04:51:40,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:41,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:45,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:45,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 04:51:45,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:51:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:51:45,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:51:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:46,421 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:51:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:46,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:46,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:51:46,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:46,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:46,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:46,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959509390] [2020-10-27 04:51:46,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:46,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:46,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857027348] [2020-10-27 04:51:46,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:46,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:46,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:46,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:46,514 INFO L87 Difference]: Start difference. First operand 7622 states and 10479 transitions. Second operand 5 states. [2020-10-27 04:51:49,493 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:51:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:50,807 INFO L93 Difference]: Finished difference Result 21398 states and 29506 transitions. [2020-10-27 04:51:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:50,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 04:51:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:50,872 INFO L225 Difference]: With dead ends: 21398 [2020-10-27 04:51:50,872 INFO L226 Difference]: Without dead ends: 14731 [2020-10-27 04:51:50,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:51:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14731 states. [2020-10-27 04:51:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14731 to 14728. [2020-10-27 04:51:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14728 states. [2020-10-27 04:51:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14728 states to 14728 states and 19942 transitions. [2020-10-27 04:51:52,084 INFO L78 Accepts]: Start accepts. Automaton has 14728 states and 19942 transitions. Word has length 148 [2020-10-27 04:51:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:52,084 INFO L481 AbstractCegarLoop]: Abstraction has 14728 states and 19942 transitions. [2020-10-27 04:51:52,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14728 states and 19942 transitions. [2020-10-27 04:51:52,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:51:52,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:52,112 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] [2020-10-27 04:51:52,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:51:52,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:52,113 INFO L82 PathProgramCache]: Analyzing trace with hash -391221575, now seen corresponding path program 1 times [2020-10-27 04:51:52,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:52,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318395769] [2020-10-27 04:51:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:52,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:56,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:56,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:51:56,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:51:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4001 [2020-10-27 04:51:56,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:51:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 04:51:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 04:51:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:56,666 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:51:56,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:51:56,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:56,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318395769] [2020-10-27 04:51:56,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:56,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:51:56,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537596783] [2020-10-27 04:51:56,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:51:56,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:56,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:51:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:51:56,728 INFO L87 Difference]: Start difference. First operand 14728 states and 19942 transitions. Second operand 4 states. [2020-10-27 04:51:57,093 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:51:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:59,569 INFO L93 Difference]: Finished difference Result 27486 states and 39066 transitions. [2020-10-27 04:51:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:51:59,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-27 04:51:59,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:59,618 INFO L225 Difference]: With dead ends: 27486 [2020-10-27 04:51:59,619 INFO L226 Difference]: Without dead ends: 22235 [2020-10-27 04:51:59,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22235 states. [2020-10-27 04:52:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22235 to 22232. [2020-10-27 04:52:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22232 states. [2020-10-27 04:52:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22232 states to 22232 states and 30550 transitions. [2020-10-27 04:52:01,219 INFO L78 Accepts]: Start accepts. Automaton has 22232 states and 30550 transitions. Word has length 149 [2020-10-27 04:52:01,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:01,220 INFO L481 AbstractCegarLoop]: Abstraction has 22232 states and 30550 transitions. [2020-10-27 04:52:01,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:52:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 22232 states and 30550 transitions. [2020-10-27 04:52:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:52:01,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:01,257 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] [2020-10-27 04:52:01,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:52:01,257 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2044344921, now seen corresponding path program 1 times [2020-10-27 04:52:01,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:01,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639130500] [2020-10-27 04:52:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:01,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:01,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:52:01,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:01,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 04:52:01,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:52:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 04:52:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 04:52:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:01,870 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:52:01,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:01,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:01,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:01,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:52:01,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:52:02,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639130500] [2020-10-27 04:52:02,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:02,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:52:02,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312633657] [2020-10-27 04:52:02,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:52:02,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:02,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:52:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:52:02,065 INFO L87 Difference]: Start difference. First operand 22232 states and 30550 transitions. Second operand 4 states. [2020-10-27 04:52:02,429 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:52:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:05,386 INFO L93 Difference]: Finished difference Result 43550 states and 62386 transitions. [2020-10-27 04:52:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:52:05,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-27 04:52:05,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:05,475 INFO L225 Difference]: With dead ends: 43550 [2020-10-27 04:52:05,475 INFO L226 Difference]: Without dead ends: 35067 [2020-10-27 04:52:05,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35067 states. [2020-10-27 04:52:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35067 to 35064. [2020-10-27 04:52:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35064 states. [2020-10-27 04:52:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35064 states to 35064 states and 48574 transitions. [2020-10-27 04:52:08,168 INFO L78 Accepts]: Start accepts. Automaton has 35064 states and 48574 transitions. Word has length 149 [2020-10-27 04:52:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:08,168 INFO L481 AbstractCegarLoop]: Abstraction has 35064 states and 48574 transitions. [2020-10-27 04:52:08,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:52:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 35064 states and 48574 transitions. [2020-10-27 04:52:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:52:08,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:08,255 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] [2020-10-27 04:52:08,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:52:08,255 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:08,256 INFO L82 PathProgramCache]: Analyzing trace with hash 225960784, now seen corresponding path program 1 times [2020-10-27 04:52:08,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:08,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125194946] [2020-10-27 04:52:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:52:08,310 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:52:08,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:52:08,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:52:08,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:52:08 BoogieIcfgContainer [2020-10-27 04:52:08,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:52:08,368 INFO L168 Benchmark]: Toolchain (without parser) took 77755.74 ms. Allocated memory was 151.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 126.2 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 629.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:52:08,369 INFO L168 Benchmark]: CDTParser took 0.65 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. [2020-10-27 04:52:08,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 130.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:52:08,370 INFO L168 Benchmark]: Boogie Preprocessor took 97.58 ms. Allocated memory is still 151.0 MB. Free memory was 130.4 MB in the beginning and 126.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:52:08,371 INFO L168 Benchmark]: RCFGBuilder took 1674.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 84.5 MB in the end (delta: 41.8 MB). Peak memory consumption was 81.6 MB. Max. memory is 8.0 GB. [2020-10-27 04:52:08,372 INFO L168 Benchmark]: TraceAbstraction took 75108.30 ms. Allocated memory was 151.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 84.0 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 586.3 MB. Max. memory is 8.0 GB. [2020-10-27 04:52:08,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 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 863.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 130.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.58 ms. Allocated memory is still 151.0 MB. Free memory was 130.4 MB in the beginning and 126.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1674.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 84.5 MB in the end (delta: 41.8 MB). Peak memory consumption was 81.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 75108.30 ms. Allocated memory was 151.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 84.0 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 586.3 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] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1708; [L70] int __return_1836; [L71] int __return_1954; [L72] int __return_2075; [L73] int __return_2198; [L74] int __tmp_2199_0; [L75] int __return_2307; [L76] int __return_2212; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_char() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_char() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] id3 = __VERIFIER_nondet_char() [L103] r3 = __VERIFIER_nondet_char() [L104] st3 = __VERIFIER_nondet_char() [L105] nl3 = __VERIFIER_nondet_char() [L106] m3 = __VERIFIER_nondet_char() [L107] max3 = __VERIFIER_nondet_char() [L108] mode3 = __VERIFIER_nondet_bool() [L110] _Bool init__r121; [L111] _Bool init__r131; [L112] _Bool init__r211; [L113] _Bool init__r231; [L114] _Bool init__r311; [L115] _Bool init__r321; [L116] _Bool init__r122; [L117] int init__tmp; [L118] _Bool init__r132; [L119] int init__tmp___0; [L120] _Bool init__r212; [L121] int init__tmp___1; [L122] _Bool init__r232; [L123] int init__tmp___2; [L124] _Bool init__r312; [L125] int init__tmp___3; [L126] _Bool init__r322; [L127] int init__tmp___4; [L128] int init__tmp___5; [L129] init__r121 = ep12 [L130] init__r131 = ep13 [L131] init__r211 = ep21 [L132] init__r231 = ep23 [L133] init__r311 = ep31 [L134] init__r321 = ep32 [L135] COND FALSE !(!(init__r121 == 0)) [L2225] COND FALSE !(!(init__r131 == 0)) [L2241] init__tmp = 0 [L139] init__r122 = (_Bool)init__tmp [L140] COND FALSE !(!(init__r131 == 0)) [L2202] COND FALSE !(!(init__r121 == 0)) [L2218] init__tmp___0 = 0 [L144] init__r132 = (_Bool)init__tmp___0 [L145] COND FALSE !(!(init__r211 == 0)) [L2179] COND FALSE !(!(init__r231 == 0)) [L2195] init__tmp___1 = 0 [L149] init__r212 = (_Bool)init__tmp___1 [L150] COND FALSE !(!(init__r231 == 0)) [L2156] COND FALSE !(!(init__r211 == 0)) [L2172] init__tmp___2 = 0 [L154] init__r232 = (_Bool)init__tmp___2 [L155] COND FALSE !(!(init__r311 == 0)) [L2133] COND FALSE !(!(init__r321 == 0)) [L2149] init__tmp___3 = 0 [L159] init__r312 = (_Bool)init__tmp___3 [L160] COND FALSE !(!(init__r321 == 0)) [L2110] COND FALSE !(!(init__r311 == 0)) [L2126] init__tmp___4 = 0 [L164] init__r322 = (_Bool)init__tmp___4 [L165] COND TRUE ((int)id1) != ((int)id2) [L167] COND TRUE ((int)id1) != ((int)id3) [L169] COND TRUE ((int)id2) != ((int)id3) [L171] COND TRUE ((int)id1) >= 0 [L173] COND TRUE ((int)id2) >= 0 [L175] COND TRUE ((int)id3) >= 0 [L177] COND TRUE ((int)r1) == 0 [L179] COND TRUE ((int)r2) == 0 [L181] COND TRUE ((int)r3) == 0 [L183] COND TRUE ((int)max1) == ((int)id1) [L185] COND TRUE ((int)max2) == ((int)id2) [L187] COND TRUE ((int)max3) == ((int)id3) [L189] COND TRUE ((int)st1) == 0 [L191] COND TRUE ((int)st2) == 0 [L193] COND TRUE ((int)st3) == 0 [L195] COND TRUE ((int)nl1) == 0 [L197] COND TRUE ((int)nl2) == 0 [L199] COND TRUE ((int)nl3) == 0 [L201] COND TRUE ((int)mode1) == 0 [L203] COND TRUE ((int)mode2) == 0 [L205] COND TRUE ((int)mode3) == 0 [L207] init__tmp___5 = 1 [L208] __return_1708 = init__tmp___5 [L209] main__i2 = __return_1708 [L210] COND TRUE main__i2 != 0 [L212] p12_old = nomsg [L213] p12_new = nomsg [L214] p13_old = nomsg [L215] p13_new = nomsg [L216] p21_old = nomsg [L217] p21_new = nomsg [L218] p23_old = nomsg [L219] p23_new = nomsg [L220] p31_old = nomsg [L221] p31_new = nomsg [L222] p32_old = nomsg [L223] p32_new = nomsg [L224] main__i2 = 0 [L225] COND TRUE main__i2 < 6 [L228] COND FALSE !(!(mode1 == 0)) [L234] COND TRUE ((int)r1) < 2 [L236] COND FALSE !(!(ep12 == 0)) [L247] COND FALSE !(!(ep13 == 0)) [L258] mode1 = 1 [L260] COND FALSE !(!(mode2 == 0)) [L266] COND TRUE ((int)r2) < 2 [L268] COND FALSE !(!(ep21 == 0)) [L279] COND FALSE !(!(ep23 == 0)) [L290] mode2 = 1 [L292] COND FALSE !(!(mode3 == 0)) [L298] COND TRUE ((int)r3) < 2 [L300] COND FALSE !(!(ep31 == 0)) [L311] COND FALSE !(!(ep32 == 0)) [L322] mode3 = 1 [L323] p12_old = p12_new [L324] p12_new = nomsg [L325] p13_old = p13_new [L326] p13_new = nomsg [L327] p21_old = p21_new [L328] p21_new = nomsg [L329] p23_old = p23_new [L330] p23_new = nomsg [L331] p31_old = p31_new [L332] p31_new = nomsg [L333] p32_old = p32_new [L334] p32_new = nomsg [L336] int check__tmp; [L337] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L339] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L341] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L343] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L345] COND FALSE !(((int)r1) >= 2) [L351] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L353] COND TRUE ((int)r1) < 2 [L355] COND FALSE !(((int)r1) >= 2) [L361] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L363] COND TRUE ((int)r1) < 2 [L365] check__tmp = 1 [L366] __return_1836 = check__tmp [L367] main__c1 = __return_1836 [L369] _Bool __tmp_1; [L370] __tmp_1 = main__c1 [L371] _Bool assert__arg; [L372] assert__arg = __tmp_1 [L373] COND FALSE !(assert__arg == 0) [L379] int main____CPAchecker_TMP_0 = main__i2; [L380] main__i2 = main__i2 + 1 [L381] COND TRUE main__i2 < 6 [L384] COND TRUE !(mode1 == 0) [L386] r1 = (char)(((int)r1) + 1) [L387] COND FALSE !(!(ep21 == 0)) [L395] COND FALSE !(!(ep31 == 0)) [L403] COND FALSE !(((int)r1) == 2) [L409] mode1 = 0 [L411] COND TRUE !(mode2 == 0) [L413] r2 = (char)(((int)r2) + 1) [L414] COND FALSE !(!(ep12 == 0)) [L422] COND FALSE !(!(ep32 == 0)) [L430] COND FALSE !(((int)r2) == 2) [L436] mode2 = 0 [L438] COND TRUE !(mode3 == 0) [L440] r3 = (char)(((int)r3) + 1) [L441] COND FALSE !(!(ep13 == 0)) [L449] COND FALSE !(!(ep23 == 0)) [L457] COND FALSE !(((int)r3) == 2) [L463] mode3 = 0 [L464] p12_old = p12_new [L465] p12_new = nomsg [L466] p13_old = p13_new [L467] p13_new = nomsg [L468] p21_old = p21_new [L469] p21_new = nomsg [L470] p23_old = p23_new [L471] p23_new = nomsg [L472] p31_old = p31_new [L473] p31_new = nomsg [L474] p32_old = p32_new [L475] p32_new = nomsg [L477] int check__tmp; [L478] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L480] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L482] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L484] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L486] COND FALSE !(((int)r1) >= 2) [L492] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L494] COND TRUE ((int)r1) < 2 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L504] COND TRUE ((int)r1) < 2 [L506] check__tmp = 1 [L507] __return_1954 = check__tmp [L508] main__c1 = __return_1954 [L510] _Bool __tmp_2; [L511] __tmp_2 = main__c1 [L512] _Bool assert__arg; [L513] assert__arg = __tmp_2 [L514] COND FALSE !(assert__arg == 0) [L520] int main____CPAchecker_TMP_0 = main__i2; [L521] main__i2 = main__i2 + 1 [L522] COND TRUE main__i2 < 6 [L525] COND FALSE !(!(mode1 == 0)) [L531] COND TRUE ((int)r1) < 2 [L533] COND FALSE !(!(ep12 == 0)) [L544] COND FALSE !(!(ep13 == 0)) [L555] mode1 = 1 [L557] COND FALSE !(!(mode2 == 0)) [L563] COND TRUE ((int)r2) < 2 [L565] COND FALSE !(!(ep21 == 0)) [L576] COND FALSE !(!(ep23 == 0)) [L587] mode2 = 1 [L589] COND FALSE !(!(mode3 == 0)) [L595] COND TRUE ((int)r3) < 2 [L597] COND FALSE !(!(ep31 == 0)) [L608] COND FALSE !(!(ep32 == 0)) [L619] mode3 = 1 [L620] p12_old = p12_new [L621] p12_new = nomsg [L622] p13_old = p13_new [L623] p13_new = nomsg [L624] p21_old = p21_new [L625] p21_new = nomsg [L626] p23_old = p23_new [L627] p23_new = nomsg [L628] p31_old = p31_new [L629] p31_new = nomsg [L630] p32_old = p32_new [L631] p32_new = nomsg [L633] int check__tmp; [L634] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L636] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L638] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L640] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L642] COND FALSE !(((int)r1) >= 2) [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L650] COND TRUE ((int)r1) < 2 [L652] COND FALSE !(((int)r1) >= 2) [L658] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L660] COND TRUE ((int)r1) < 2 [L662] check__tmp = 1 [L663] __return_2075 = check__tmp [L664] main__c1 = __return_2075 [L666] _Bool __tmp_3; [L667] __tmp_3 = main__c1 [L668] _Bool assert__arg; [L669] assert__arg = __tmp_3 [L670] COND FALSE !(assert__arg == 0) [L676] int main____CPAchecker_TMP_0 = main__i2; [L677] main__i2 = main__i2 + 1 [L678] COND TRUE main__i2 < 6 [L681] COND TRUE !(mode1 == 0) [L683] r1 = (char)(((int)r1) + 1) [L684] COND FALSE !(!(ep21 == 0)) [L692] COND FALSE !(!(ep31 == 0)) [L700] COND TRUE ((int)r1) == 2 [L702] COND TRUE ((int)max1) == ((int)id1) [L704] st1 = 1 [L706] mode1 = 0 [L708] COND TRUE !(mode2 == 0) [L710] r2 = (char)(((int)r2) + 1) [L711] COND FALSE !(!(ep12 == 0)) [L719] COND FALSE !(!(ep32 == 0)) [L727] COND TRUE ((int)r2) == 2 [L729] COND TRUE ((int)max2) == ((int)id2) [L731] st2 = 1 [L733] mode2 = 0 [L735] COND TRUE !(mode3 == 0) [L737] r3 = (char)(((int)r3) + 1) [L738] COND FALSE !(!(ep13 == 0)) [L746] COND FALSE !(!(ep23 == 0)) [L754] COND TRUE ((int)r3) == 2 [L756] COND TRUE ((int)max3) == ((int)id3) [L758] st3 = 1 [L760] mode3 = 0 [L761] p12_old = p12_new [L762] p12_new = nomsg [L763] p13_old = p13_new [L764] p13_new = nomsg [L765] p21_old = p21_new [L766] p21_new = nomsg [L767] p23_old = p23_new [L768] p23_new = nomsg [L769] p31_old = p31_new [L770] p31_new = nomsg [L771] p32_old = p32_new [L772] p32_new = nomsg [L774] int check__tmp; [L775] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1400] check__tmp = 0 [L803] __return_2198 = check__tmp [L804] main__c1 = __return_2198 [L805] __tmp_2199_0 = main____CPAchecker_TMP_0 [L807] main____CPAchecker_TMP_0 = __tmp_2199_0 [L809] _Bool __tmp_4; [L810] __tmp_4 = main__c1 [L811] _Bool assert__arg; [L812] assert__arg = __tmp_4 [L813] COND TRUE assert__arg == 0 [L815] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 312 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 74.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 28.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5409 SDtfs, 5789 SDslu, 3106 SDs, 0 SdLazy, 5954 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35064occurred 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: 6.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.3s InterpolantComputationTime, 1320 NumberOfCodeBlocks, 1320 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1163 ConstructedInterpolants, 0 QuantifiedInterpolants, 954328 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...