/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:00:36,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:00:36,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:00:36,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:00:36,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:00:36,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:00:36,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:00:36,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:00:36,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:00:36,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:00:36,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:00:36,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:00:36,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:00:36,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:00:36,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:00:36,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:00:36,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:00:36,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:00:36,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:00:36,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:00:36,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:00:36,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:00:36,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:00:36,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:00:36,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:00:36,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:00:36,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:00:36,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:00:36,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:00:36,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:00:36,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:00:36,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:00:36,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:00:36,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:00:36,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:00:36,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:00:36,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:00:36,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:00:36,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:00:36,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:00:36,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:00:36,837 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 [2020-08-22 04:00:36,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:00:36,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:00:36,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:00:36,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:00:36,875 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:00:36,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:00:36,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:00:36,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:00:36,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:00:36,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:00:36,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:00:36,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:00:36,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:00:36,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:00:36,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:00:36,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:00:36,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:00:36,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:00:36,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:00:36,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:00:36,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:00:36,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:00:36,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:00:36,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:00:36,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:00:36,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:00:36,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:00:36,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:00:36,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:00:36,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 04:00:37,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:00:37,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:00:37,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:00:37,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:00:37,239 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:00:37,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-22 04:00:37,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49a6d3417/6ccfdba3b46549a589dbc9846e5e974c/FLAGa75b38f05 [2020-08-22 04:00:37,864 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:00:37,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-22 04:00:37,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49a6d3417/6ccfdba3b46549a589dbc9846e5e974c/FLAGa75b38f05 [2020-08-22 04:00:38,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49a6d3417/6ccfdba3b46549a589dbc9846e5e974c [2020-08-22 04:00:38,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:00:38,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:00:38,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:00:38,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:00:38,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:00:38,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:00:38" (1/1) ... [2020-08-22 04:00:38,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9731bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:38, skipping insertion in model container [2020-08-22 04:00:38,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:00:38" (1/1) ... [2020-08-22 04:00:38,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:00:38,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:00:38,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:00:38,875 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:00:39,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:00:39,054 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:00:39,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39 WrapperNode [2020-08-22 04:00:39,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:00:39,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:00:39,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:00:39,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:00:39,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (1/1) ... [2020-08-22 04:00:39,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (1/1) ... [2020-08-22 04:00:39,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (1/1) ... [2020-08-22 04:00:39,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (1/1) ... [2020-08-22 04:00:39,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (1/1) ... [2020-08-22 04:00:39,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (1/1) ... [2020-08-22 04:00:39,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (1/1) ... [2020-08-22 04:00:39,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:00:39,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:00:39,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:00:39,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:00:39,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (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 [2020-08-22 04:00:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:00:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:00:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:00:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:00:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:00:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 04:00:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 04:00:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 04:00:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:00:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:00:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 04:00:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 04:00:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 04:00:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 04:00:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 04:00:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 04:00:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 04:00:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:00:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:00:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:00:40,680 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:00:40,681 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 04:00:40,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:00:40 BoogieIcfgContainer [2020-08-22 04:00:40,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:00:40,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:00:40,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:00:40,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:00:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:00:38" (1/3) ... [2020-08-22 04:00:40,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5651c505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:00:40, skipping insertion in model container [2020-08-22 04:00:40,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:00:39" (2/3) ... [2020-08-22 04:00:40,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5651c505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:00:40, skipping insertion in model container [2020-08-22 04:00:40,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:00:40" (3/3) ... [2020-08-22 04:00:40,696 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-22 04:00:40,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:00:40,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:00:40,731 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:00:40,757 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:00:40,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:00:40,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:00:40,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:00:40,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:00:40,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:00:40,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:00:40,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:00:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-08-22 04:00:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 04:00:40,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:40,800 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] [2020-08-22 04:00:40,800 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash -483172071, now seen corresponding path program 1 times [2020-08-22 04:00:40,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:40,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912416552] [2020-08-22 04:00:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,728 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:00:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:41,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912416552] [2020-08-22 04:00:41,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:41,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:00:41,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903216814] [2020-08-22 04:00:41,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:00:41,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:00:41,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:41,830 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-08-22 04:00:42,085 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-22 04:00:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:43,674 INFO L93 Difference]: Finished difference Result 599 states and 1046 transitions. [2020-08-22 04:00:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:00:43,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-22 04:00:43,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:43,696 INFO L225 Difference]: With dead ends: 599 [2020-08-22 04:00:43,696 INFO L226 Difference]: Without dead ends: 487 [2020-08-22 04:00:43,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:00:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-08-22 04:00:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2020-08-22 04:00:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-08-22 04:00:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 724 transitions. [2020-08-22 04:00:43,791 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 724 transitions. Word has length 142 [2020-08-22 04:00:43,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:43,792 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 724 transitions. [2020-08-22 04:00:43,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:00:43,793 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 724 transitions. [2020-08-22 04:00:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 04:00:43,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:43,797 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] [2020-08-22 04:00:43,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:00:43,798 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:43,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:43,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1126069355, now seen corresponding path program 1 times [2020-08-22 04:00:43,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:43,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356803168] [2020-08-22 04:00:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:44,237 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:00:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:44,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356803168] [2020-08-22 04:00:44,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:44,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:00:44,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735807828] [2020-08-22 04:00:44,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:00:44,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:44,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:00:44,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:44,341 INFO L87 Difference]: Start difference. First operand 485 states and 724 transitions. Second operand 4 states. [2020-08-22 04:00:44,538 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-08-22 04:00:45,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:45,737 INFO L93 Difference]: Finished difference Result 1027 states and 1575 transitions. [2020-08-22 04:00:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:00:45,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-08-22 04:00:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:45,746 INFO L225 Difference]: With dead ends: 1027 [2020-08-22 04:00:45,746 INFO L226 Difference]: Without dead ends: 845 [2020-08-22 04:00:45,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:00:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-08-22 04:00:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2020-08-22 04:00:45,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-08-22 04:00:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1268 transitions. [2020-08-22 04:00:45,826 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1268 transitions. Word has length 142 [2020-08-22 04:00:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:45,827 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1268 transitions. [2020-08-22 04:00:45,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:00:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1268 transitions. [2020-08-22 04:00:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 04:00:45,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:45,831 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] [2020-08-22 04:00:45,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:00:45,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash 229473698, now seen corresponding path program 1 times [2020-08-22 04:00:45,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:45,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195908987] [2020-08-22 04:00:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,277 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:00:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:46,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195908987] [2020-08-22 04:00:46,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:46,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:00:46,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180241056] [2020-08-22 04:00:46,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:00:46,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:00:46,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:00:46,402 INFO L87 Difference]: Start difference. First operand 843 states and 1268 transitions. Second operand 5 states. [2020-08-22 04:00:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:48,748 INFO L93 Difference]: Finished difference Result 2459 states and 3695 transitions. [2020-08-22 04:00:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:00:48,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-08-22 04:00:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:48,758 INFO L225 Difference]: With dead ends: 2459 [2020-08-22 04:00:48,758 INFO L226 Difference]: Without dead ends: 1629 [2020-08-22 04:00:48,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:00:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-08-22 04:00:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1627. [2020-08-22 04:00:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-08-22 04:00:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2425 transitions. [2020-08-22 04:00:48,845 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2425 transitions. Word has length 142 [2020-08-22 04:00:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:48,846 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 2425 transitions. [2020-08-22 04:00:48,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:00:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2425 transitions. [2020-08-22 04:00:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 04:00:48,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:48,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:48,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:00:48,851 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:48,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:48,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1866532876, now seen corresponding path program 1 times [2020-08-22 04:00:48,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:48,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438723640] [2020-08-22 04:00:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:49,096 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:00:49,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:49,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438723640] [2020-08-22 04:00:49,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:49,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:00:49,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107068335] [2020-08-22 04:00:49,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:00:49,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:49,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:00:49,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:49,130 INFO L87 Difference]: Start difference. First operand 1627 states and 2425 transitions. Second operand 4 states. [2020-08-22 04:00:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:50,869 INFO L93 Difference]: Finished difference Result 4835 states and 7205 transitions. [2020-08-22 04:00:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:00:50,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 04:00:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:50,887 INFO L225 Difference]: With dead ends: 4835 [2020-08-22 04:00:50,888 INFO L226 Difference]: Without dead ends: 3240 [2020-08-22 04:00:50,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:50,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2020-08-22 04:00:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 1629. [2020-08-22 04:00:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-08-22 04:00:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2427 transitions. [2020-08-22 04:00:51,019 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2427 transitions. Word has length 143 [2020-08-22 04:00:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:51,020 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 2427 transitions. [2020-08-22 04:00:51,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:00:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2427 transitions. [2020-08-22 04:00:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-08-22 04:00:51,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:51,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:51,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:00:51,025 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1747112419, now seen corresponding path program 1 times [2020-08-22 04:00:51,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:51,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186899257] [2020-08-22 04:00:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:51,426 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:00:51,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:51,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186899257] [2020-08-22 04:00:51,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:51,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:00:51,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664245426] [2020-08-22 04:00:51,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:00:51,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:51,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:00:51,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:00:51,498 INFO L87 Difference]: Start difference. First operand 1629 states and 2427 transitions. Second operand 5 states. [2020-08-22 04:00:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:53,973 INFO L93 Difference]: Finished difference Result 4735 states and 7041 transitions. [2020-08-22 04:00:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:00:53,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-08-22 04:00:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:53,989 INFO L225 Difference]: With dead ends: 4735 [2020-08-22 04:00:53,989 INFO L226 Difference]: Without dead ends: 3140 [2020-08-22 04:00:53,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:00:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-08-22 04:00:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3138. [2020-08-22 04:00:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-08-22 04:00:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4626 transitions. [2020-08-22 04:00:54,173 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4626 transitions. Word has length 144 [2020-08-22 04:00:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:54,174 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4626 transitions. [2020-08-22 04:00:54,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:00:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4626 transitions. [2020-08-22 04:00:54,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 04:00:54,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:54,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:54,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:00:54,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:54,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash 470263341, now seen corresponding path program 1 times [2020-08-22 04:00:54,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:54,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168074949] [2020-08-22 04:00:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:54,427 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:00:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:54,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168074949] [2020-08-22 04:00:54,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:54,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:00:54,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266955485] [2020-08-22 04:00:54,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:00:54,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:54,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:00:54,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:54,492 INFO L87 Difference]: Start difference. First operand 3138 states and 4626 transitions. Second operand 4 states. [2020-08-22 04:00:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:56,823 INFO L93 Difference]: Finished difference Result 9330 states and 13750 transitions. [2020-08-22 04:00:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:00:56,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-08-22 04:00:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:56,853 INFO L225 Difference]: With dead ends: 9330 [2020-08-22 04:00:56,854 INFO L226 Difference]: Without dead ends: 6240 [2020-08-22 04:00:56,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-08-22 04:00:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3142. [2020-08-22 04:00:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3142 states. [2020-08-22 04:00:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4630 transitions. [2020-08-22 04:00:57,065 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4630 transitions. Word has length 145 [2020-08-22 04:00:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:00:57,065 INFO L479 AbstractCegarLoop]: Abstraction has 3142 states and 4630 transitions. [2020-08-22 04:00:57,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:00:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4630 transitions. [2020-08-22 04:00:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 04:00:57,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:00:57,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:00:57,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:00:57,074 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:00:57,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:00:57,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1966669402, now seen corresponding path program 1 times [2020-08-22 04:00:57,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:00:57,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232564815] [2020-08-22 04:00:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:00:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,356 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:00:57,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:00:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:00:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:00:57,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232564815] [2020-08-22 04:00:57,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:00:57,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:00:57,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186043390] [2020-08-22 04:00:57,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:00:57,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:00:57,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:00:57,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:57,418 INFO L87 Difference]: Start difference. First operand 3142 states and 4630 transitions. Second operand 4 states. [2020-08-22 04:00:59,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:00:59,694 INFO L93 Difference]: Finished difference Result 8922 states and 13174 transitions. [2020-08-22 04:00:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:00:59,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 04:00:59,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:00:59,722 INFO L225 Difference]: With dead ends: 8922 [2020-08-22 04:00:59,722 INFO L226 Difference]: Without dead ends: 6068 [2020-08-22 04:00:59,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:00:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6068 states. [2020-08-22 04:01:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6068 to 6066. [2020-08-22 04:01:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-22 04:01:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8848 transitions. [2020-08-22 04:01:00,046 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8848 transitions. Word has length 146 [2020-08-22 04:01:00,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:00,047 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8848 transitions. [2020-08-22 04:01:00,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8848 transitions. [2020-08-22 04:01:00,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 04:01:00,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:00,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:01:00,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:01:00,057 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:00,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:00,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1533440317, now seen corresponding path program 1 times [2020-08-22 04:01:00,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:00,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362399785] [2020-08-22 04:01:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:00,398 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:01:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:00,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362399785] [2020-08-22 04:01:00,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:00,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:01:00,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496385997] [2020-08-22 04:01:00,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:01:00,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:00,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:01:00,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:00,448 INFO L87 Difference]: Start difference. First operand 6066 states and 8848 transitions. Second operand 5 states. [2020-08-22 04:01:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:02,160 INFO L93 Difference]: Finished difference Result 12466 states and 18074 transitions. [2020-08-22 04:01:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:02,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 04:01:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:02,212 INFO L225 Difference]: With dead ends: 12466 [2020-08-22 04:01:02,213 INFO L226 Difference]: Without dead ends: 6280 [2020-08-22 04:01:02,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:01:02,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-22 04:01:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6278. [2020-08-22 04:01:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-08-22 04:01:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9022 transitions. [2020-08-22 04:01:02,523 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9022 transitions. Word has length 146 [2020-08-22 04:01:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:02,524 INFO L479 AbstractCegarLoop]: Abstraction has 6278 states and 9022 transitions. [2020-08-22 04:01:02,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:01:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9022 transitions. [2020-08-22 04:01:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 04:01:02,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:02,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:01:02,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:01:02,598 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:02,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:02,599 INFO L82 PathProgramCache]: Analyzing trace with hash -400414044, now seen corresponding path program 1 times [2020-08-22 04:01:02,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:02,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814420640] [2020-08-22 04:01:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:02,917 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:01:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:02,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814420640] [2020-08-22 04:01:02,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:02,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:01:02,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140098441] [2020-08-22 04:01:02,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:01:02,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:02,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:01:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:02,965 INFO L87 Difference]: Start difference. First operand 6278 states and 9022 transitions. Second operand 5 states. [2020-08-22 04:01:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:05,193 INFO L93 Difference]: Finished difference Result 9166 states and 13176 transitions. [2020-08-22 04:01:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:05,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 04:01:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:05,211 INFO L225 Difference]: With dead ends: 9166 [2020-08-22 04:01:05,211 INFO L226 Difference]: Without dead ends: 6280 [2020-08-22 04:01:05,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:01:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-08-22 04:01:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6066. [2020-08-22 04:01:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2020-08-22 04:01:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8760 transitions. [2020-08-22 04:01:05,496 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8760 transitions. Word has length 146 [2020-08-22 04:01:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:05,497 INFO L479 AbstractCegarLoop]: Abstraction has 6066 states and 8760 transitions. [2020-08-22 04:01:05,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:01:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8760 transitions. [2020-08-22 04:01:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 04:01:05,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:05,505 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] [2020-08-22 04:01:05,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:01:05,505 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:05,506 INFO L82 PathProgramCache]: Analyzing trace with hash -946102129, now seen corresponding path program 1 times [2020-08-22 04:01:05,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:05,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382274976] [2020-08-22 04:01:05,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:05,745 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:01:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:05,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382274976] [2020-08-22 04:01:05,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:05,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:01:05,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916058978] [2020-08-22 04:01:05,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:01:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:01:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:05,777 INFO L87 Difference]: Start difference. First operand 6066 states and 8760 transitions. Second operand 4 states. [2020-08-22 04:01:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:07,536 INFO L93 Difference]: Finished difference Result 14910 states and 21518 transitions. [2020-08-22 04:01:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:01:07,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-22 04:01:07,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:07,562 INFO L225 Difference]: With dead ends: 14910 [2020-08-22 04:01:07,562 INFO L226 Difference]: Without dead ends: 12024 [2020-08-22 04:01:07,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:01:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12024 states. [2020-08-22 04:01:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12024 to 6074. [2020-08-22 04:01:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2020-08-22 04:01:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 8768 transitions. [2020-08-22 04:01:07,910 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 8768 transitions. Word has length 147 [2020-08-22 04:01:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:07,910 INFO L479 AbstractCegarLoop]: Abstraction has 6074 states and 8768 transitions. [2020-08-22 04:01:07,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:01:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 8768 transitions. [2020-08-22 04:01:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 04:01:07,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:07,918 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] [2020-08-22 04:01:07,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:01:07,918 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:07,919 INFO L82 PathProgramCache]: Analyzing trace with hash 585736260, now seen corresponding path program 1 times [2020-08-22 04:01:07,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:07,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570496943] [2020-08-22 04:01:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:08,270 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-08-22 04:01:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:01:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:01:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:01:08,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570496943] [2020-08-22 04:01:08,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:01:08,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:01:08,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100017410] [2020-08-22 04:01:08,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:01:08,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:01:08,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:01:08,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:01:08,316 INFO L87 Difference]: Start difference. First operand 6074 states and 8768 transitions. Second operand 5 states. [2020-08-22 04:01:10,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:01:10,788 INFO L93 Difference]: Finished difference Result 17704 states and 25485 transitions. [2020-08-22 04:01:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:01:10,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-22 04:01:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:01:10,812 INFO L225 Difference]: With dead ends: 17704 [2020-08-22 04:01:10,812 INFO L226 Difference]: Without dead ends: 11677 [2020-08-22 04:01:10,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:01:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11677 states. [2020-08-22 04:01:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11677 to 11675. [2020-08-22 04:01:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11675 states. [2020-08-22 04:01:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11675 states to 11675 states and 16612 transitions. [2020-08-22 04:01:11,443 INFO L78 Accepts]: Start accepts. Automaton has 11675 states and 16612 transitions. Word has length 148 [2020-08-22 04:01:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:01:11,443 INFO L479 AbstractCegarLoop]: Abstraction has 11675 states and 16612 transitions. [2020-08-22 04:01:11,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:01:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 11675 states and 16612 transitions. [2020-08-22 04:01:11,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 04:01:11,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:01:11,454 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] [2020-08-22 04:01:11,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:01:11,455 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:01:11,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:01:11,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1497708571, now seen corresponding path program 1 times [2020-08-22 04:01:11,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:01:11,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410678812] [2020-08-22 04:01:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:01:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:01:11,518 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:01:11,518 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:01:11,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:01:11,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:01:11 BoogieIcfgContainer [2020-08-22 04:01:11,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:01:11,593 INFO L168 Benchmark]: Toolchain (without parser) took 33390.21 ms. Allocated memory was 146.8 MB in the beginning and 848.3 MB in the end (delta: 701.5 MB). Free memory was 101.5 MB in the beginning and 196.7 MB in the end (delta: -95.2 MB). Peak memory consumption was 606.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:11,596 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-08-22 04:01:11,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 853.42 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.5 MB in the beginning and 164.9 MB in the end (delta: -63.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:11,597 INFO L168 Benchmark]: Boogie Preprocessor took 94.99 ms. Allocated memory is still 202.9 MB. Free memory was 164.9 MB in the beginning and 160.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:11,603 INFO L168 Benchmark]: RCFGBuilder took 1537.01 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 160.9 MB in the beginning and 154.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:11,605 INFO L168 Benchmark]: TraceAbstraction took 30900.30 ms. Allocated memory was 236.5 MB in the beginning and 848.3 MB in the end (delta: 611.8 MB). Free memory was 154.1 MB in the beginning and 196.7 MB in the end (delta: -42.6 MB). Peak memory consumption was 569.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:01:11,613 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 853.42 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.5 MB in the beginning and 164.9 MB in the end (delta: -63.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.99 ms. Allocated memory is still 202.9 MB. Free memory was 164.9 MB in the beginning and 160.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1537.01 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 160.9 MB in the beginning and 154.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30900.30 ms. Allocated memory was 236.5 MB in the beginning and 848.3 MB in the end (delta: 611.8 MB). Free memory was 154.1 MB in the beginning and 196.7 MB in the end (delta: -42.6 MB). Peak memory consumption was 569.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 813]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2198; [L72] int __tmp_2199_0; [L73] int __return_2307; [L74] int __return_2212; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_char() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_char() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_char() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L2223] COND FALSE !(!(init__r131 == 0)) [L2239] init__tmp = 0 [L137] init__r122 = (_Bool)init__tmp [L138] COND FALSE !(!(init__r131 == 0)) [L2200] COND FALSE !(!(init__r121 == 0)) [L2216] init__tmp___0 = 0 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND FALSE !(!(init__r211 == 0)) [L2177] COND FALSE !(!(init__r231 == 0)) [L2193] init__tmp___1 = 0 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L2154] COND FALSE !(!(init__r211 == 0)) [L2170] init__tmp___2 = 0 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L2131] COND FALSE !(!(init__r321 == 0)) [L2147] init__tmp___3 = 0 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND FALSE !(!(init__r321 == 0)) [L2108] COND FALSE !(!(init__r311 == 0)) [L2124] init__tmp___4 = 0 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE ((int)max1) == ((int)id1) [L183] COND TRUE ((int)max2) == ((int)id2) [L185] COND TRUE ((int)max3) == ((int)id3) [L187] COND TRUE ((int)st1) == 0 [L189] COND TRUE ((int)st2) == 0 [L191] COND TRUE ((int)st3) == 0 [L193] COND TRUE ((int)nl1) == 0 [L195] COND TRUE ((int)nl2) == 0 [L197] COND TRUE ((int)nl3) == 0 [L199] COND TRUE ((int)mode1) == 0 [L201] COND TRUE ((int)mode2) == 0 [L203] COND TRUE ((int)mode3) == 0 [L205] init__tmp___5 = 1 [L206] __return_1708 = init__tmp___5 [L207] main__i2 = __return_1708 [L208] COND TRUE main__i2 != 0 [L210] p12_old = nomsg [L211] p12_new = nomsg [L212] p13_old = nomsg [L213] p13_new = nomsg [L214] p21_old = nomsg [L215] p21_new = nomsg [L216] p23_old = nomsg [L217] p23_new = nomsg [L218] p31_old = nomsg [L219] p31_new = nomsg [L220] p32_old = nomsg [L221] p32_new = nomsg [L222] main__i2 = 0 [L223] COND TRUE main__i2 < 6 [L226] COND FALSE !(!(mode1 == 0)) [L232] COND TRUE ((int)r1) < 2 [L234] COND FALSE !(!(ep12 == 0)) [L245] COND FALSE !(!(ep13 == 0)) [L256] mode1 = 1 [L258] COND FALSE !(!(mode2 == 0)) [L264] COND TRUE ((int)r2) < 2 [L266] COND FALSE !(!(ep21 == 0)) [L277] COND FALSE !(!(ep23 == 0)) [L288] mode2 = 1 [L290] COND FALSE !(!(mode3 == 0)) [L296] COND TRUE ((int)r3) < 2 [L298] COND FALSE !(!(ep31 == 0)) [L309] COND FALSE !(!(ep32 == 0)) [L320] mode3 = 1 [L321] p12_old = p12_new [L322] p12_new = nomsg [L323] p13_old = p13_new [L324] p13_new = nomsg [L325] p21_old = p21_new [L326] p21_new = nomsg [L327] p23_old = p23_new [L328] p23_new = nomsg [L329] p31_old = p31_new [L330] p31_new = nomsg [L331] p32_old = p32_new [L332] p32_new = nomsg [L334] int check__tmp; [L335] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L337] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L339] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L341] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L343] COND FALSE !(((int)r1) >= 2) [L349] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L351] COND TRUE ((int)r1) < 2 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] check__tmp = 1 [L364] __return_1836 = check__tmp [L365] main__c1 = __return_1836 [L367] _Bool __tmp_1; [L368] __tmp_1 = main__c1 [L369] _Bool assert__arg; [L370] assert__arg = __tmp_1 [L371] COND FALSE !(assert__arg == 0) [L377] int main____CPAchecker_TMP_0 = main__i2; [L378] main__i2 = main__i2 + 1 [L379] COND TRUE main__i2 < 6 [L382] COND TRUE !(mode1 == 0) [L384] r1 = (char)(((int)r1) + 1) [L385] COND FALSE !(!(ep21 == 0)) [L393] COND FALSE !(!(ep31 == 0)) [L401] COND FALSE !(((int)r1) == 2) [L407] mode1 = 0 [L409] COND TRUE !(mode2 == 0) [L411] r2 = (char)(((int)r2) + 1) [L412] COND FALSE !(!(ep12 == 0)) [L420] COND FALSE !(!(ep32 == 0)) [L428] COND FALSE !(((int)r2) == 2) [L434] mode2 = 0 [L436] COND TRUE !(mode3 == 0) [L438] r3 = (char)(((int)r3) + 1) [L439] COND FALSE !(!(ep13 == 0)) [L447] COND FALSE !(!(ep23 == 0)) [L455] COND FALSE !(((int)r3) == 2) [L461] mode3 = 0 [L462] p12_old = p12_new [L463] p12_new = nomsg [L464] p13_old = p13_new [L465] p13_new = nomsg [L466] p21_old = p21_new [L467] p21_new = nomsg [L468] p23_old = p23_new [L469] p23_new = nomsg [L470] p31_old = p31_new [L471] p31_new = nomsg [L472] p32_old = p32_new [L473] p32_new = nomsg [L475] int check__tmp; [L476] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L478] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L480] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L482] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L484] COND FALSE !(((int)r1) >= 2) [L490] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L492] COND TRUE ((int)r1) < 2 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L502] COND TRUE ((int)r1) < 2 [L504] check__tmp = 1 [L505] __return_1954 = check__tmp [L506] main__c1 = __return_1954 [L508] _Bool __tmp_2; [L509] __tmp_2 = main__c1 [L510] _Bool assert__arg; [L511] assert__arg = __tmp_2 [L512] COND FALSE !(assert__arg == 0) [L518] int main____CPAchecker_TMP_0 = main__i2; [L519] main__i2 = main__i2 + 1 [L520] COND TRUE main__i2 < 6 [L523] COND FALSE !(!(mode1 == 0)) [L529] COND TRUE ((int)r1) < 2 [L531] COND FALSE !(!(ep12 == 0)) [L542] COND FALSE !(!(ep13 == 0)) [L553] mode1 = 1 [L555] COND FALSE !(!(mode2 == 0)) [L561] COND TRUE ((int)r2) < 2 [L563] COND FALSE !(!(ep21 == 0)) [L574] COND FALSE !(!(ep23 == 0)) [L585] mode2 = 1 [L587] COND FALSE !(!(mode3 == 0)) [L593] COND TRUE ((int)r3) < 2 [L595] COND FALSE !(!(ep31 == 0)) [L606] COND FALSE !(!(ep32 == 0)) [L617] mode3 = 1 [L618] p12_old = p12_new [L619] p12_new = nomsg [L620] p13_old = p13_new [L621] p13_new = nomsg [L622] p21_old = p21_new [L623] p21_new = nomsg [L624] p23_old = p23_new [L625] p23_new = nomsg [L626] p31_old = p31_new [L627] p31_new = nomsg [L628] p32_old = p32_new [L629] p32_new = nomsg [L631] int check__tmp; [L632] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L634] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L636] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L638] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L640] COND FALSE !(((int)r1) >= 2) [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L648] COND TRUE ((int)r1) < 2 [L650] COND FALSE !(((int)r1) >= 2) [L656] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L658] COND TRUE ((int)r1) < 2 [L660] check__tmp = 1 [L661] __return_2075 = check__tmp [L662] main__c1 = __return_2075 [L664] _Bool __tmp_3; [L665] __tmp_3 = main__c1 [L666] _Bool assert__arg; [L667] assert__arg = __tmp_3 [L668] COND FALSE !(assert__arg == 0) [L674] int main____CPAchecker_TMP_0 = main__i2; [L675] main__i2 = main__i2 + 1 [L676] COND TRUE main__i2 < 6 [L679] COND TRUE !(mode1 == 0) [L681] r1 = (char)(((int)r1) + 1) [L682] COND FALSE !(!(ep21 == 0)) [L690] COND FALSE !(!(ep31 == 0)) [L698] COND TRUE ((int)r1) == 2 [L700] COND TRUE ((int)max1) == ((int)id1) [L702] st1 = 1 [L704] mode1 = 0 [L706] COND TRUE !(mode2 == 0) [L708] r2 = (char)(((int)r2) + 1) [L709] COND FALSE !(!(ep12 == 0)) [L717] COND FALSE !(!(ep32 == 0)) [L725] COND TRUE ((int)r2) == 2 [L727] COND TRUE ((int)max2) == ((int)id2) [L729] st2 = 1 [L731] mode2 = 0 [L733] COND TRUE !(mode3 == 0) [L735] r3 = (char)(((int)r3) + 1) [L736] COND FALSE !(!(ep13 == 0)) [L744] COND FALSE !(!(ep23 == 0)) [L752] COND TRUE ((int)r3) == 2 [L754] COND TRUE ((int)max3) == ((int)id3) [L756] st3 = 1 [L758] mode3 = 0 [L759] p12_old = p12_new [L760] p12_new = nomsg [L761] p13_old = p13_new [L762] p13_new = nomsg [L763] p21_old = p21_new [L764] p21_new = nomsg [L765] p23_old = p23_new [L766] p23_new = nomsg [L767] p31_old = p31_new [L768] p31_new = nomsg [L769] p32_old = p32_new [L770] p32_new = nomsg [L772] int check__tmp; [L773] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1398] check__tmp = 0 [L801] __return_2198 = check__tmp [L802] main__c1 = __return_2198 [L803] __tmp_2199_0 = main____CPAchecker_TMP_0 [L805] main____CPAchecker_TMP_0 = __tmp_2199_0 [L807] _Bool __tmp_4; [L808] __tmp_4 = main__c1 [L809] _Bool assert__arg; [L810] assert__arg = __tmp_4 [L811] COND TRUE assert__arg == 0 [L813] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7042 SDtfs, 6766 SDslu, 4400 SDs, 0 SdLazy, 7530 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11675occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 10887 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1739 NumberOfCodeBlocks, 1739 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1580 ConstructedInterpolants, 0 QuantifiedInterpolants, 798711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...