/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:35:03,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:35:03,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:35:03,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:35:03,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:35:03,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:35:03,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:35:03,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:35:03,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:35:03,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:35:03,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:35:03,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:35:03,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:35:03,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:35:03,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:35:03,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:35:03,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:35:03,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:35:03,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:35:03,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:35:03,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:35:03,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:35:03,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:35:03,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:35:03,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:35:03,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:35:03,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:35:03,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:35:03,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:35:03,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:35:03,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:35:03,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:35:03,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:35:03,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:35:03,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:35:03,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:35:03,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:35:03,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:35:03,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:35:03,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:35:03,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:35:03,782 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 [2020-09-21 11:35:03,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:35:03,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:35:03,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:35:03,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:35:03,829 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:35:03,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:35:03,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:35:03,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:35:03,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:35:03,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:35:03,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:35:03,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:35:03,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:35:03,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:35:03,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:35:03,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:35:03,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:35:03,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:35:03,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:35:03,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:35:03,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:35:03,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:35:03,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:35:03,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:35:03,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:35:03,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:35:03,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:35:03,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:35:03,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:35:03,836 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:35:04,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:35:04,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:35:04,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:35:04,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:35:04,375 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:35:04,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 11:35:04,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87097d780/9bc06c9cf54442df9caf379b66fdbbdf/FLAG31407a401 [2020-09-21 11:35:05,207 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:35:05,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 11:35:05,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87097d780/9bc06c9cf54442df9caf379b66fdbbdf/FLAG31407a401 [2020-09-21 11:35:05,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87097d780/9bc06c9cf54442df9caf379b66fdbbdf [2020-09-21 11:35:05,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:35:05,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:35:05,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:35:05,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:35:05,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:35:05,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:35:05" (1/1) ... [2020-09-21 11:35:05,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46544934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:05, skipping insertion in model container [2020-09-21 11:35:05,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:35:05" (1/1) ... [2020-09-21 11:35:05,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:35:05,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:35:06,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:35:06,923 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:35:08,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:35:08,339 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:35:08,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08 WrapperNode [2020-09-21 11:35:08,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:35:08,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:35:08,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:35:08,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:35:08,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (1/1) ... [2020-09-21 11:35:08,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (1/1) ... [2020-09-21 11:35:08,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (1/1) ... [2020-09-21 11:35:08,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (1/1) ... [2020-09-21 11:35:08,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (1/1) ... [2020-09-21 11:35:08,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (1/1) ... [2020-09-21 11:35:08,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (1/1) ... [2020-09-21 11:35:08,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:35:08,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:35:08,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:35:08,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:35:08,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (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 [2020-09-21 11:35:08,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:35:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:35:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:35:08,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:35:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:35:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 11:35:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 11:35:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 11:35:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 11:35:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:35:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:35:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 11:35:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 11:35:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 11:35:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 11:35:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 11:35:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-21 11:35:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 11:35:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 11:35:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:35:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:35:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:35:11,882 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:35:11,882 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:35:11,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:35:11 BoogieIcfgContainer [2020-09-21 11:35:11,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:35:11,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:35:11,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:35:11,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:35:11,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:35:05" (1/3) ... [2020-09-21 11:35:11,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34278ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:35:11, skipping insertion in model container [2020-09-21 11:35:11,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:35:08" (2/3) ... [2020-09-21 11:35:11,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34278ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:35:11, skipping insertion in model container [2020-09-21 11:35:11,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:35:11" (3/3) ... [2020-09-21 11:35:11,905 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 11:35:11,916 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:35:11,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-21 11:35:11,948 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-21 11:35:11,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:35:11,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:35:11,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:35:11,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:35:11,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:35:11,982 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:35:11,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:35:11,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:35:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-09-21 11:35:12,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-21 11:35:12,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:12,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:12,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:12,070 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-09-21 11:35:12,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:12,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376891377] [2020-09-21 11:35:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:12,956 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:12,956 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:12,957 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:12,957 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:12,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-09-21 11:35:12,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:35:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:35:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-21 11:35:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-21 11:35:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:14,228 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 11:35:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:14,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:14,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:14,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:14,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:14,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:14,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:35:14,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:35:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:14,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376891377] [2020-09-21 11:35:14,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:14,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:35:14,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96349397] [2020-09-21 11:35:14,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:35:14,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:14,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:35:14,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:35:14,704 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2020-09-21 11:35:15,314 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-21 11:35:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:23,058 INFO L93 Difference]: Finished difference Result 1794 states and 3183 transitions. [2020-09-21 11:35:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:35:23,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-09-21 11:35:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:23,096 INFO L225 Difference]: With dead ends: 1794 [2020-09-21 11:35:23,097 INFO L226 Difference]: Without dead ends: 1483 [2020-09-21 11:35:23,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:35:23,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-09-21 11:35:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481. [2020-09-21 11:35:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-09-21 11:35:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2263 transitions. [2020-09-21 11:35:23,257 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2263 transitions. Word has length 327 [2020-09-21 11:35:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:23,259 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2263 transitions. [2020-09-21 11:35:23,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:35:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2263 transitions. [2020-09-21 11:35:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-21 11:35:23,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:23,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:23,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:35:23,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:23,268 INFO L82 PathProgramCache]: Analyzing trace with hash 297127498, now seen corresponding path program 1 times [2020-09-21 11:35:23,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:23,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046010904] [2020-09-21 11:35:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:23,546 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:23,546 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:23,547 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:23,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-09-21 11:35:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:35:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:35:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-21 11:35:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 233 [2020-09-21 11:35:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:35:24,617 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 11:35:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:24,632 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:24,632 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:24,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:24,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:24,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:35:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:24,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046010904] [2020-09-21 11:35:24,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:24,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:35:24,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026063080] [2020-09-21 11:35:24,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:35:24,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:24,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:35:24,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:35:24,951 INFO L87 Difference]: Start difference. First operand 1481 states and 2263 transitions. Second operand 4 states. [2020-09-21 11:35:25,729 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-21 11:35:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:32,854 INFO L93 Difference]: Finished difference Result 2844 states and 4401 transitions. [2020-09-21 11:35:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:35:32,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-09-21 11:35:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:32,871 INFO L225 Difference]: With dead ends: 2844 [2020-09-21 11:35:32,871 INFO L226 Difference]: Without dead ends: 2425 [2020-09-21 11:35:32,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:35:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-09-21 11:35:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2423. [2020-09-21 11:35:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-09-21 11:35:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3727 transitions. [2020-09-21 11:35:33,003 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3727 transitions. Word has length 327 [2020-09-21 11:35:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:33,005 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3727 transitions. [2020-09-21 11:35:33,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:35:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3727 transitions. [2020-09-21 11:35:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-21 11:35:33,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:33,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:33,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:35:33,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash -586459585, now seen corresponding path program 1 times [2020-09-21 11:35:33,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:33,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087008227] [2020-09-21 11:35:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:33,280 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:33,281 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:33,281 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:33,281 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:33,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-09-21 11:35:33,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:35:33,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:35:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 11:35:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-09-21 11:35:33,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:34,144 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 11:35:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:34,156 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:34,156 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:34,157 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:34,157 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:34,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:34,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:34,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:34,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:34,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087008227] [2020-09-21 11:35:34,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:34,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:35:34,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691889490] [2020-09-21 11:35:34,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:35:34,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:34,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:35:34,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:35:34,336 INFO L87 Difference]: Start difference. First operand 2423 states and 3727 transitions. Second operand 4 states. [2020-09-21 11:35:35,076 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-21 11:35:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:41,637 INFO L93 Difference]: Finished difference Result 5038 states and 7854 transitions. [2020-09-21 11:35:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:35:41,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-09-21 11:35:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:41,660 INFO L225 Difference]: With dead ends: 5038 [2020-09-21 11:35:41,660 INFO L226 Difference]: Without dead ends: 4361 [2020-09-21 11:35:41,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:35:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2020-09-21 11:35:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4359. [2020-09-21 11:35:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4359 states. [2020-09-21 11:35:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6733 transitions. [2020-09-21 11:35:41,787 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 6733 transitions. Word has length 327 [2020-09-21 11:35:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:41,788 INFO L479 AbstractCegarLoop]: Abstraction has 4359 states and 6733 transitions. [2020-09-21 11:35:41,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:35:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 6733 transitions. [2020-09-21 11:35:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-21 11:35:41,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:41,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:41,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:35:41,801 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:41,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:41,802 INFO L82 PathProgramCache]: Analyzing trace with hash -586798209, now seen corresponding path program 1 times [2020-09-21 11:35:41,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:41,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145026201] [2020-09-21 11:35:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:42,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:42,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:42,214 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:42,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:42,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-09-21 11:35:42,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:35:42,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:35:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:35:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 11:35:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:43,155 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 11:35:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:43,167 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:43,167 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:43,167 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:43,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:43,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:43,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:43,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145026201] [2020-09-21 11:35:43,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:43,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:35:43,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363855887] [2020-09-21 11:35:43,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:35:43,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:43,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:35:43,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:35:43,343 INFO L87 Difference]: Start difference. First operand 4359 states and 6733 transitions. Second operand 5 states. [2020-09-21 11:35:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:35:53,203 INFO L93 Difference]: Finished difference Result 12898 states and 19904 transitions. [2020-09-21 11:35:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:35:53,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-09-21 11:35:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:35:53,242 INFO L225 Difference]: With dead ends: 12898 [2020-09-21 11:35:53,242 INFO L226 Difference]: Without dead ends: 8554 [2020-09-21 11:35:53,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:35:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8554 states. [2020-09-21 11:35:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8554 to 8347. [2020-09-21 11:35:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8347 states. [2020-09-21 11:35:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 12864 transitions. [2020-09-21 11:35:53,515 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 12864 transitions. Word has length 327 [2020-09-21 11:35:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:35:53,515 INFO L479 AbstractCegarLoop]: Abstraction has 8347 states and 12864 transitions. [2020-09-21 11:35:53,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:35:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 12864 transitions. [2020-09-21 11:35:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-09-21 11:35:53,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:35:53,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:35:53,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:35:53,534 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:35:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:35:53,534 INFO L82 PathProgramCache]: Analyzing trace with hash 318218777, now seen corresponding path program 1 times [2020-09-21 11:35:53,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:35:53,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680039549] [2020-09-21 11:35:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:35:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:53,678 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:53,678 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:53,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:53,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:53,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-09-21 11:35:53,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:53,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:35:53,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:35:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:35:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-21 11:35:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:54,466 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 11:35:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:35:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:35:54,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:35:54,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:35:54,486 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:35:54,486 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:35:54,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:35:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:35:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:35:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:35:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:35:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:35:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:35:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:35:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:35:54,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680039549] [2020-09-21 11:35:54,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:35:54,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:35:54,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460488287] [2020-09-21 11:35:54,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:35:54,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:35:54,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:35:54,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:35:54,711 INFO L87 Difference]: Start difference. First operand 8347 states and 12864 transitions. Second operand 4 states.