/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:10:51,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:10:51,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:10:51,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:10:51,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:10:51,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:10:51,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:10:51,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:10:51,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:10:51,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:10:51,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:10:51,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:10:51,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:10:51,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:10:51,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:10:51,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:10:51,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:10:51,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:10:51,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:10:51,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:10:51,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:10:51,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:10:51,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:10:51,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:10:51,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:10:51,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:10:51,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:10:51,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:10:51,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:10:51,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:10:51,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:10:51,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:10:51,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:10:51,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:10:51,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:10:51,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:10:51,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:10:51,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:10:51,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:10:51,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:10:51,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:10:51,201 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 [2020-10-28 19:10:51,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:10:51,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:10:51,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:10:51,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:10:51,234 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:10:51,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:10:51,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:10:51,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:10:51,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:10:51,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:10:51,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:10:51,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:10:51,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:10:51,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:10:51,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:10:51,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:10:51,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:10:51,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:10:51,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:10:51,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:10:51,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:10:51,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:10:51,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:10:51,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:10:51,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:10:51,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:10:51,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:10:51,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:10:51,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:10:51,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:10:51,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:10:51,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:10:51,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:10:51,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:10:51,649 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:10:51,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 19:10:51,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b71afb9/4c07827cdf7c4063978493e3d7384ea8/FLAG3809374c3 [2020-10-28 19:10:52,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:10:52,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 19:10:52,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b71afb9/4c07827cdf7c4063978493e3d7384ea8/FLAG3809374c3 [2020-10-28 19:10:52,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19b71afb9/4c07827cdf7c4063978493e3d7384ea8 [2020-10-28 19:10:52,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:10:52,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:10:52,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:10:52,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:10:52,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:10:52,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:10:52" (1/1) ... [2020-10-28 19:10:52,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec93ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:52, skipping insertion in model container [2020-10-28 19:10:52,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:10:52" (1/1) ... [2020-10-28 19:10:52,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:10:52,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:10:53,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:10:53,428 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:10:53,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:10:53,714 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:10:53,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53 WrapperNode [2020-10-28 19:10:53,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:10:53,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:10:53,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:10:53,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:10:53,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (1/1) ... [2020-10-28 19:10:53,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (1/1) ... [2020-10-28 19:10:53,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (1/1) ... [2020-10-28 19:10:53,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (1/1) ... [2020-10-28 19:10:53,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (1/1) ... [2020-10-28 19:10:53,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (1/1) ... [2020-10-28 19:10:53,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (1/1) ... [2020-10-28 19:10:53,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:10:53,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:10:53,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:10:53,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:10:53,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (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 [2020-10-28 19:10:53,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:10:53,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:10:53,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:10:53,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:10:53,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:10:53,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:10:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:10:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:10:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:10:53,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:10:53,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:10:53,958 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:10:53,958 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:10:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:10:53,959 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:10:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:10:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:10:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:10:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:10:53,960 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:10:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:10:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:10:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:10:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:10:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:10:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:10:53,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:10:55,778 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:10:55,778 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:10:55,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:10:55 BoogieIcfgContainer [2020-10-28 19:10:55,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:10:55,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:10:55,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:10:55,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:10:55,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:10:52" (1/3) ... [2020-10-28 19:10:55,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c678631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:10:55, skipping insertion in model container [2020-10-28 19:10:55,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:10:53" (2/3) ... [2020-10-28 19:10:55,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c678631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:10:55, skipping insertion in model container [2020-10-28 19:10:55,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:10:55" (3/3) ... [2020-10-28 19:10:55,790 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 19:10:55,802 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:10:55,808 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:10:55,822 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:10:55,855 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:10:55,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:10:55,856 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:10:55,856 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:10:55,856 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:10:55,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:10:55,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:10:55,856 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:10:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-10-28 19:10:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 19:10:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:55,907 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] [2020-10-28 19:10:55,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:55,914 INFO L82 PathProgramCache]: Analyzing trace with hash 424531033, now seen corresponding path program 1 times [2020-10-28 19:10:55,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:55,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623320748] [2020-10-28 19:10:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:01,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:01,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 19:11:01,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:11:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 19:11:01,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:01,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 19:11:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 19:11:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 19:11:02,086 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:11:02,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:02,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:02,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:02,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:02,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:02,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:11:02,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:02,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:02,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:02,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623320748] [2020-10-28 19:11:02,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:02,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:11:02,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141071042] [2020-10-28 19:11:02,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:11:02,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:02,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:11:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:11:02,217 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 4 states. [2020-10-28 19:11:02,701 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-28 19:11:05,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:05,963 INFO L93 Difference]: Finished difference Result 759 states and 1332 transitions. [2020-10-28 19:11:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:11:05,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-28 19:11:05,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:05,991 INFO L225 Difference]: With dead ends: 759 [2020-10-28 19:11:05,991 INFO L226 Difference]: Without dead ends: 591 [2020-10-28 19:11:05,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-10-28 19:11:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 588. [2020-10-28 19:11:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-10-28 19:11:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 871 transitions. [2020-10-28 19:11:06,138 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 871 transitions. Word has length 147 [2020-10-28 19:11:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:06,139 INFO L481 AbstractCegarLoop]: Abstraction has 588 states and 871 transitions. [2020-10-28 19:11:06,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:11:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 871 transitions. [2020-10-28 19:11:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 19:11:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:06,145 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] [2020-10-28 19:11:06,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:11:06,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash -656363333, now seen corresponding path program 1 times [2020-10-28 19:11:06,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:06,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982602906] [2020-10-28 19:11:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:10,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:11,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:11,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 19:11:11,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:11:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 19:11:11,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:11,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 19:11:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 19:11:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:11,746 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:11:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:11,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:11,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 19:11:11,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:11,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:11,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982602906] [2020-10-28 19:11:11,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:11,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:11:11,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019612881] [2020-10-28 19:11:11,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:11:11,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:11,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:11:11,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:11:11,860 INFO L87 Difference]: Start difference. First operand 588 states and 871 transitions. Second operand 4 states. [2020-10-28 19:11:12,353 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-28 19:11:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:14,746 INFO L93 Difference]: Finished difference Result 1190 states and 1812 transitions. [2020-10-28 19:11:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:11:14,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-28 19:11:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:14,767 INFO L225 Difference]: With dead ends: 1190 [2020-10-28 19:11:14,767 INFO L226 Difference]: Without dead ends: 977 [2020-10-28 19:11:14,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:14,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-10-28 19:11:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 974. [2020-10-28 19:11:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2020-10-28 19:11:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1463 transitions. [2020-10-28 19:11:14,845 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1463 transitions. Word has length 147 [2020-10-28 19:11:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:14,847 INFO L481 AbstractCegarLoop]: Abstraction has 974 states and 1463 transitions. [2020-10-28 19:11:14,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:11:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1463 transitions. [2020-10-28 19:11:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 19:11:14,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:14,858 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] [2020-10-28 19:11:14,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:11:14,858 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:14,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:14,866 INFO L82 PathProgramCache]: Analyzing trace with hash -666860398, now seen corresponding path program 1 times [2020-10-28 19:11:14,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:14,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058759609] [2020-10-28 19:11:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 19:11:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:11:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:11:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:19,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:11:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 19:11:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:20,623 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:11:20,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:20,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:20,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 19:11:20,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:20,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:20,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058759609] [2020-10-28 19:11:20,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:20,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:20,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435516984] [2020-10-28 19:11:20,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:20,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:20,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:20,759 INFO L87 Difference]: Start difference. First operand 974 states and 1463 transitions. Second operand 5 states. [2020-10-28 19:11:23,708 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:11:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:25,039 INFO L93 Difference]: Finished difference Result 2828 states and 4234 transitions. [2020-10-28 19:11:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:11:25,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 19:11:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:25,051 INFO L225 Difference]: With dead ends: 2828 [2020-10-28 19:11:25,051 INFO L226 Difference]: Without dead ends: 1871 [2020-10-28 19:11:25,057 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 [2020-10-28 19:11:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-10-28 19:11:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1844. [2020-10-28 19:11:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2020-10-28 19:11:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2743 transitions. [2020-10-28 19:11:25,154 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2743 transitions. Word has length 147 [2020-10-28 19:11:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:25,155 INFO L481 AbstractCegarLoop]: Abstraction has 1844 states and 2743 transitions. [2020-10-28 19:11:25,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:11:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2743 transitions. [2020-10-28 19:11:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 19:11:25,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:25,159 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] [2020-10-28 19:11:25,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:11:25,160 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:25,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:25,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2097630160, now seen corresponding path program 1 times [2020-10-28 19:11:25,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:25,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904898265] [2020-10-28 19:11:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:30,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 19:11:30,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:11:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:11:30,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:30,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:11:30,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 19:11:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:30,834 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:11:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:30,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 19:11:30,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:30,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:30,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904898265] [2020-10-28 19:11:30,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:30,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:30,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692535630] [2020-10-28 19:11:30,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:30,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:30,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:30,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:30,960 INFO L87 Difference]: Start difference. First operand 1844 states and 2743 transitions. Second operand 5 states. [2020-10-28 19:11:33,691 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:11:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:34,595 INFO L93 Difference]: Finished difference Result 5369 states and 7963 transitions. [2020-10-28 19:11:34,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:11:34,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-28 19:11:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:34,616 INFO L225 Difference]: With dead ends: 5369 [2020-10-28 19:11:34,616 INFO L226 Difference]: Without dead ends: 3555 [2020-10-28 19:11:34,623 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 [2020-10-28 19:11:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2020-10-28 19:11:34,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3510. [2020-10-28 19:11:34,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3510 states. [2020-10-28 19:11:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5170 transitions. [2020-10-28 19:11:34,822 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5170 transitions. Word has length 148 [2020-10-28 19:11:34,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:34,823 INFO L481 AbstractCegarLoop]: Abstraction has 3510 states and 5170 transitions. [2020-10-28 19:11:34,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:11:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5170 transitions. [2020-10-28 19:11:34,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 19:11:34,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:34,831 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] [2020-10-28 19:11:34,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:11:34,831 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:34,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1742964335, now seen corresponding path program 1 times [2020-10-28 19:11:34,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:34,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164332617] [2020-10-28 19:11:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:39,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 19:11:39,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:11:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 19:11:39,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:39,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:11:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 19:11:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:40,524 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:11:40,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:40,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:40,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:40,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:11:40,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:40,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:40,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164332617] [2020-10-28 19:11:40,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:40,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:40,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979836772] [2020-10-28 19:11:40,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:40,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:40,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:40,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:40,653 INFO L87 Difference]: Start difference. First operand 3510 states and 5170 transitions. Second operand 5 states. [2020-10-28 19:11:43,558 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:11:45,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:45,063 INFO L93 Difference]: Finished difference Result 9410 states and 13832 transitions. [2020-10-28 19:11:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:11:45,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-28 19:11:45,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:45,094 INFO L225 Difference]: With dead ends: 9410 [2020-10-28 19:11:45,094 INFO L226 Difference]: Without dead ends: 6078 [2020-10-28 19:11:45,103 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 [2020-10-28 19:11:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2020-10-28 19:11:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 6046. [2020-10-28 19:11:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6046 states. [2020-10-28 19:11:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 8771 transitions. [2020-10-28 19:11:45,521 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 8771 transitions. Word has length 149 [2020-10-28 19:11:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:45,521 INFO L481 AbstractCegarLoop]: Abstraction has 6046 states and 8771 transitions. [2020-10-28 19:11:45,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:11:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 8771 transitions. [2020-10-28 19:11:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 19:11:45,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:45,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:11:45,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:11:45,533 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:45,533 INFO L82 PathProgramCache]: Analyzing trace with hash 688646737, now seen corresponding path program 1 times [2020-10-28 19:11:45,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:45,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835003481] [2020-10-28 19:11:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:50,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:11:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 19:11:50,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:51,065 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:11:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:51,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:51,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:51,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:51,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:11:51,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:51,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:51,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835003481] [2020-10-28 19:11:51,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:51,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:51,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125783845] [2020-10-28 19:11:51,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:51,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:51,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:51,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:51,179 INFO L87 Difference]: Start difference. First operand 6046 states and 8771 transitions. Second operand 5 states. [2020-10-28 19:11:54,131 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:11:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:55,676 INFO L93 Difference]: Finished difference Result 17586 states and 25407 transitions. [2020-10-28 19:11:55,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:11:55,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-28 19:11:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:55,726 INFO L225 Difference]: With dead ends: 17586 [2020-10-28 19:11:55,726 INFO L226 Difference]: Without dead ends: 11633 [2020-10-28 19:11:55,742 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 [2020-10-28 19:11:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11633 states. [2020-10-28 19:11:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11633 to 11582. [2020-10-28 19:11:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11582 states. [2020-10-28 19:11:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11582 states to 11582 states and 16567 transitions. [2020-10-28 19:11:56,507 INFO L78 Accepts]: Start accepts. Automaton has 11582 states and 16567 transitions. Word has length 150 [2020-10-28 19:11:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:56,507 INFO L481 AbstractCegarLoop]: Abstraction has 11582 states and 16567 transitions. [2020-10-28 19:11:56,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:11:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 11582 states and 16567 transitions. [2020-10-28 19:11:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 19:11:56,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:56,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:11:56,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:11:56,526 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:56,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1166576785, now seen corresponding path program 1 times [2020-10-28 19:11:56,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:56,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155062626] [2020-10-28 19:11:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:57,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:00,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 19:12:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:12:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-10-28 19:12:00,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:00,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 19:12:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:01,371 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:12:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:01,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:12:01,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:01,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:12:01,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155062626] [2020-10-28 19:12:01,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:01,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:01,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151002734] [2020-10-28 19:12:01,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:01,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:01,493 INFO L87 Difference]: Start difference. First operand 11582 states and 16567 transitions. Second operand 5 states. [2020-10-28 19:12:05,369 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:12:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:07,186 INFO L93 Difference]: Finished difference Result 33482 states and 47782 transitions. [2020-10-28 19:12:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:12:07,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-28 19:12:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:07,242 INFO L225 Difference]: With dead ends: 33482 [2020-10-28 19:12:07,243 INFO L226 Difference]: Without dead ends: 22347 [2020-10-28 19:12:07,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:12:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2020-10-28 19:12:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 22296. [2020-10-28 19:12:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22296 states. [2020-10-28 19:12:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22296 states to 22296 states and 31434 transitions. [2020-10-28 19:12:08,713 INFO L78 Accepts]: Start accepts. Automaton has 22296 states and 31434 transitions. Word has length 151 [2020-10-28 19:12:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:08,713 INFO L481 AbstractCegarLoop]: Abstraction has 22296 states and 31434 transitions. [2020-10-28 19:12:08,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:12:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 22296 states and 31434 transitions. [2020-10-28 19:12:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:12:08,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:08,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:12:08,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:12:08,748 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2141516304, now seen corresponding path program 1 times [2020-10-28 19:12:08,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:08,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576263134] [2020-10-28 19:12:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:10,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:12:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:12:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1241 [2020-10-28 19:12:10,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:10,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 19:12:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:10,654 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:12:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:10,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:10,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:12:10,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:10,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:10,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:12:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:12:10,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576263134] [2020-10-28 19:12:10,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:10,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:10,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249970504] [2020-10-28 19:12:10,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:10,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:10,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:10,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:10,804 INFO L87 Difference]: Start difference. First operand 22296 states and 31434 transitions. Second operand 5 states. [2020-10-28 19:12:14,677 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:12:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:17,075 INFO L93 Difference]: Finished difference Result 58244 states and 81930 transitions. [2020-10-28 19:12:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:12:17,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-28 19:12:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:17,149 INFO L225 Difference]: With dead ends: 58244 [2020-10-28 19:12:17,150 INFO L226 Difference]: Without dead ends: 38009 [2020-10-28 19:12:17,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:12:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38009 states. [2020-10-28 19:12:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38009 to 37958. [2020-10-28 19:12:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37958 states. [2020-10-28 19:12:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37958 states to 37958 states and 52494 transitions. [2020-10-28 19:12:19,536 INFO L78 Accepts]: Start accepts. Automaton has 37958 states and 52494 transitions. Word has length 152 [2020-10-28 19:12:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:19,537 INFO L481 AbstractCegarLoop]: Abstraction has 37958 states and 52494 transitions. [2020-10-28 19:12:19,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:12:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 37958 states and 52494 transitions. [2020-10-28 19:12:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 19:12:19,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:19,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:12:19,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:12:19,582 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash 236832847, now seen corresponding path program 1 times [2020-10-28 19:12:19,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:19,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227210252] [2020-10-28 19:12:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 19:12:19,642 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 19:12:19,642 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 19:12:19,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:12:19,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 07:12:19 BoogieIcfgContainer [2020-10-28 19:12:19,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 19:12:19,706 INFO L168 Benchmark]: Toolchain (without parser) took 86956.73 ms. Allocated memory was 151.0 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 123.5 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 277.2 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:19,706 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 19:12:19,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 960.27 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.4 MB in the end (delta: 424.5 kB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:19,707 INFO L168 Benchmark]: Boogie Preprocessor took 118.45 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 117.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:19,708 INFO L168 Benchmark]: RCFGBuilder took 1945.11 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 117.3 MB in the beginning and 159.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 91.4 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:19,709 INFO L168 Benchmark]: TraceAbstraction took 83920.37 ms. Allocated memory was 186.6 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 159.1 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 276.0 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:19,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 960.27 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.4 MB in the end (delta: 424.5 kB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 118.45 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 117.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1945.11 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 117.3 MB in the beginning and 159.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 91.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 83920.37 ms. Allocated memory was 186.6 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 159.1 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 276.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_3069; [L77] int __return_3038; [L78] int __return_2975; [L79] int __return_2941; [L80] int __tmp_2420_0; [L81] int __return_2543; [L82] int __return_2433; [L83] int __return_2828; [L84] int __return_2794; [L85] int __return_2710; [L86] int __return_2419; [L89] int main__c1; [L90] int main__i2; [L91] main__c1 = 0 [L92] ep12 = __VERIFIER_nondet_bool() [L93] ep13 = __VERIFIER_nondet_bool() [L94] ep21 = __VERIFIER_nondet_bool() [L95] ep23 = __VERIFIER_nondet_bool() [L96] ep31 = __VERIFIER_nondet_bool() [L97] ep32 = __VERIFIER_nondet_bool() [L98] id1 = __VERIFIER_nondet_char() [L99] r1 = __VERIFIER_nondet_char() [L100] st1 = __VERIFIER_nondet_char() [L101] nl1 = __VERIFIER_nondet_char() [L102] m1 = __VERIFIER_nondet_char() [L103] max1 = __VERIFIER_nondet_char() [L104] mode1 = __VERIFIER_nondet_bool() [L105] newmax1 = __VERIFIER_nondet_bool() [L106] id2 = __VERIFIER_nondet_char() [L107] r2 = __VERIFIER_nondet_char() [L108] st2 = __VERIFIER_nondet_char() [L109] nl2 = __VERIFIER_nondet_char() [L110] m2 = __VERIFIER_nondet_char() [L111] max2 = __VERIFIER_nondet_char() [L112] mode2 = __VERIFIER_nondet_bool() [L113] newmax2 = __VERIFIER_nondet_bool() [L114] id3 = __VERIFIER_nondet_char() [L115] r3 = __VERIFIER_nondet_char() [L116] st3 = __VERIFIER_nondet_char() [L117] nl3 = __VERIFIER_nondet_char() [L118] m3 = __VERIFIER_nondet_char() [L119] max3 = __VERIFIER_nondet_char() [L120] mode3 = __VERIFIER_nondet_bool() [L121] newmax3 = __VERIFIER_nondet_bool() [L123] _Bool init__r121; [L124] _Bool init__r131; [L125] _Bool init__r211; [L126] _Bool init__r231; [L127] _Bool init__r311; [L128] _Bool init__r321; [L129] _Bool init__r122; [L130] int init__tmp; [L131] _Bool init__r132; [L132] int init__tmp___0; [L133] _Bool init__r212; [L134] int init__tmp___1; [L135] _Bool init__r232; [L136] int init__tmp___2; [L137] _Bool init__r312; [L138] int init__tmp___3; [L139] _Bool init__r322; [L140] int init__tmp___4; [L141] int init__tmp___5; [L142] init__r121 = ep12 [L143] init__r131 = ep13 [L144] init__r211 = ep21 [L145] init__r231 = ep23 [L146] init__r311 = ep31 [L147] init__r321 = ep32 [L148] COND FALSE !(!(init__r121 == 0)) [L3142] COND FALSE !(!(init__r131 == 0)) [L3158] init__tmp = 0 [L152] init__r122 = (_Bool)init__tmp [L153] COND FALSE !(!(init__r131 == 0)) [L3119] COND FALSE !(!(init__r121 == 0)) [L3135] init__tmp___0 = 0 [L157] init__r132 = (_Bool)init__tmp___0 [L158] COND FALSE !(!(init__r211 == 0)) [L3096] COND FALSE !(!(init__r231 == 0)) [L3112] init__tmp___1 = 0 [L162] init__r212 = (_Bool)init__tmp___1 [L163] COND FALSE !(!(init__r231 == 0)) [L3073] COND FALSE !(!(init__r211 == 0)) [L3089] init__tmp___2 = 0 [L167] init__r232 = (_Bool)init__tmp___2 [L168] COND FALSE !(!(init__r311 == 0)) [L3050] COND FALSE !(!(init__r321 == 0)) [L3066] init__tmp___3 = 0 [L172] init__r312 = (_Bool)init__tmp___3 [L173] COND FALSE !(!(init__r321 == 0)) [L3027] COND FALSE !(!(init__r311 == 0)) [L3043] init__tmp___4 = 0 [L177] init__r322 = (_Bool)init__tmp___4 [L178] COND TRUE ((int)id1) != ((int)id2) [L180] COND TRUE ((int)id1) != ((int)id3) [L182] COND TRUE ((int)id2) != ((int)id3) [L184] COND TRUE ((int)id1) >= 0 [L186] COND TRUE ((int)id2) >= 0 [L188] COND TRUE ((int)id3) >= 0 [L190] COND TRUE ((int)r1) == 0 [L192] COND TRUE ((int)r2) == 0 [L194] COND TRUE ((int)r3) == 0 [L196] COND TRUE ((int)max1) == ((int)id1) [L198] COND TRUE ((int)max2) == ((int)id2) [L200] COND TRUE ((int)max3) == ((int)id3) [L202] COND TRUE ((int)st1) == 0 [L204] COND TRUE ((int)st2) == 0 [L206] COND TRUE ((int)st3) == 0 [L208] COND TRUE ((int)nl1) == 0 [L210] COND TRUE ((int)nl2) == 0 [L212] COND TRUE ((int)nl3) == 0 [L214] COND TRUE ((int)mode1) == 0 [L216] COND TRUE ((int)mode2) == 0 [L218] COND TRUE ((int)mode3) == 0 [L220] COND TRUE !(newmax1 == 0) [L222] COND TRUE !(newmax2 == 0) [L224] COND TRUE !(newmax3 == 0) [L226] init__tmp___5 = 1 [L227] __return_1863 = init__tmp___5 [L228] main__i2 = __return_1863 [L229] COND TRUE main__i2 != 0 [L231] p12_old = nomsg [L232] p12_new = nomsg [L233] p13_old = nomsg [L234] p13_new = nomsg [L235] p21_old = nomsg [L236] p21_new = nomsg [L237] p23_old = nomsg [L238] p23_new = nomsg [L239] p31_old = nomsg [L240] p31_new = nomsg [L241] p32_old = nomsg [L242] p32_new = nomsg [L243] main__i2 = 0 [L244] COND TRUE main__i2 < 6 [L247] _Bool node1__newmax; [L248] node1__newmax = 0 [L249] COND FALSE !(!(mode1 == 0)) [L255] COND TRUE ((int)r1) < 2 [L257] COND FALSE !(!(ep12 == 0)) [L270] COND FALSE !(!(ep13 == 0)) [L283] mode1 = 1 [L285] _Bool node2__newmax; [L286] node2__newmax = 0 [L287] COND FALSE !(!(mode2 == 0)) [L293] COND TRUE ((int)r2) < 2 [L295] COND FALSE !(!(ep21 == 0)) [L308] COND FALSE !(!(ep23 == 0)) [L321] mode2 = 1 [L323] _Bool node3__newmax; [L324] node3__newmax = 0 [L325] COND FALSE !(!(mode3 == 0)) [L331] COND TRUE ((int)r3) < 2 [L333] COND FALSE !(!(ep31 == 0)) [L346] COND FALSE !(!(ep32 == 0)) [L359] mode3 = 1 [L360] p12_old = p12_new [L361] p12_new = nomsg [L362] p13_old = p13_new [L363] p13_new = nomsg [L364] p21_old = p21_new [L365] p21_new = nomsg [L366] p23_old = p23_new [L367] p23_new = nomsg [L368] p31_old = p31_new [L369] p31_new = nomsg [L370] p32_old = p32_new [L371] p32_new = nomsg [L373] int check__tmp; [L374] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L376] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L378] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L380] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] COND FALSE !(((int)r1) >= 2) [L398] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L400] COND TRUE ((int)r1) < 2 [L402] check__tmp = 1 [L403] __return_2009 = check__tmp [L404] main__c1 = __return_2009 [L406] _Bool __tmp_1; [L407] __tmp_1 = main__c1 [L408] _Bool assert__arg; [L409] assert__arg = __tmp_1 [L410] COND FALSE !(assert__arg == 0) [L416] int main____CPAchecker_TMP_0 = main__i2; [L417] main__i2 = main__i2 + 1 [L418] COND TRUE main__i2 < 6 [L421] _Bool node1__newmax; [L422] node1__newmax = 0 [L423] COND TRUE !(mode1 == 0) [L425] r1 = (char)(((int)r1) + 1) [L426] COND FALSE !(!(ep21 == 0)) [L435] COND FALSE !(!(ep31 == 0)) [L444] newmax1 = node1__newmax [L445] COND FALSE !(((int)r1) == 2) [L451] mode1 = 0 [L453] _Bool node2__newmax; [L454] node2__newmax = 0 [L455] COND TRUE !(mode2 == 0) [L457] r2 = (char)(((int)r2) + 1) [L458] COND FALSE !(!(ep12 == 0)) [L467] COND FALSE !(!(ep32 == 0)) [L476] newmax2 = node2__newmax [L477] COND FALSE !(((int)r2) == 2) [L483] mode2 = 0 [L485] _Bool node3__newmax; [L486] node3__newmax = 0 [L487] COND TRUE !(mode3 == 0) [L489] r3 = (char)(((int)r3) + 1) [L490] COND FALSE !(!(ep13 == 0)) [L499] COND FALSE !(!(ep23 == 0)) [L508] newmax3 = node3__newmax [L509] COND FALSE !(((int)r3) == 2) [L515] mode3 = 0 [L516] p12_old = p12_new [L517] p12_new = nomsg [L518] p13_old = p13_new [L519] p13_new = nomsg [L520] p21_old = p21_new [L521] p21_new = nomsg [L522] p23_old = p23_new [L523] p23_new = nomsg [L524] p31_old = p31_new [L525] p31_new = nomsg [L526] p32_old = p32_new [L527] p32_new = nomsg [L529] int check__tmp; [L530] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L532] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L534] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L536] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L538] COND FALSE !(((int)r1) >= 2) [L544] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L546] COND TRUE ((int)r1) < 2 [L548] COND FALSE !(((int)r1) >= 2) [L554] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L556] COND TRUE ((int)r1) < 2 [L558] check__tmp = 1 [L559] __return_2142 = check__tmp [L560] main__c1 = __return_2142 [L562] _Bool __tmp_2; [L563] __tmp_2 = main__c1 [L564] _Bool assert__arg; [L565] assert__arg = __tmp_2 [L566] COND FALSE !(assert__arg == 0) [L572] int main____CPAchecker_TMP_0 = main__i2; [L573] main__i2 = main__i2 + 1 [L574] COND TRUE main__i2 < 6 [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2281 = check__tmp [L734] main__c1 = __return_2281 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L746] int main____CPAchecker_TMP_0 = main__i2; [L747] main__i2 = main__i2 + 1 [L748] COND TRUE main__i2 < 6 [L751] _Bool node1__newmax; [L752] node1__newmax = 0 [L753] COND TRUE !(mode1 == 0) [L755] r1 = (char)(((int)r1) + 1) [L756] COND FALSE !(!(ep21 == 0)) [L765] COND FALSE !(!(ep31 == 0)) [L774] newmax1 = node1__newmax [L775] COND TRUE ((int)r1) == 2 [L777] COND TRUE ((int)max1) == ((int)id1) [L779] st1 = 1 [L780] mode1 = 0 [L782] _Bool node2__newmax; [L783] node2__newmax = 0 [L784] COND TRUE !(mode2 == 0) [L786] r2 = (char)(((int)r2) + 1) [L787] COND FALSE !(!(ep12 == 0)) [L796] COND FALSE !(!(ep32 == 0)) [L805] newmax2 = node2__newmax [L806] COND TRUE ((int)r2) == 2 [L808] COND TRUE ((int)max2) == ((int)id2) [L810] st2 = 1 [L811] mode2 = 0 [L813] _Bool node3__newmax; [L814] node3__newmax = 0 [L815] COND TRUE !(mode3 == 0) [L817] r3 = (char)(((int)r3) + 1) [L818] COND FALSE !(!(ep13 == 0)) [L827] COND FALSE !(!(ep23 == 0)) [L836] newmax3 = node3__newmax [L837] COND TRUE ((int)r3) == 2 [L839] COND TRUE ((int)max3) == ((int)id3) [L841] st3 = 1 [L842] mode3 = 0 [L843] p12_old = p12_new [L844] p12_new = nomsg [L845] p13_old = p13_new [L846] p13_new = nomsg [L847] p21_old = p21_new [L848] p21_new = nomsg [L849] p23_old = p23_new [L850] p23_new = nomsg [L851] p31_old = p31_new [L852] p31_new = nomsg [L853] p32_old = p32_new [L854] p32_new = nomsg [L856] int check__tmp; [L857] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L863] check__tmp = 0 [L864] __return_3069 = check__tmp [L865] main__c1 = __return_3069 [L867] _Bool __tmp_4; [L868] __tmp_4 = main__c1 [L869] _Bool assert__arg; [L870] assert__arg = __tmp_4 [L871] COND TRUE assert__arg == 0 [L873] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 420 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 83.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7249 SDtfs, 7754 SDslu, 4054 SDs, 0 SdLazy, 7903 SolverSat, 196 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37958occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 263 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 40.6s InterpolantComputationTime, 1344 NumberOfCodeBlocks, 1344 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1183 ConstructedInterpolants, 0 QuantifiedInterpolants, 1310426 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...