/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:24:17,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:24:17,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:24:17,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:24:17,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:24:17,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:24:17,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:24:17,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:24:17,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:24:17,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:24:17,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:24:17,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:24:17,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:24:17,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:24:17,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:24:17,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:24:17,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:24:17,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:24:17,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:24:17,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:24:17,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:24:17,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:24:17,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:24:17,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:24:17,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:24:17,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:24:17,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:24:17,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:24:17,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:24:17,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:24:17,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:24:17,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:24:17,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:24:17,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:24:17,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:24:17,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:24:17,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:24:17,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:24:17,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:24:17,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:24:17,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:24:17,530 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 [2020-09-24 17:24:17,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:24:17,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:24:17,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:24:17,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:24:17,582 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:24:17,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:24:17,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:24:17,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:24:17,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:24:17,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:24:17,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:24:17,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:24:17,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:24:17,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:24:17,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:24:17,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:24:17,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:24:17,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:24:17,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:24:17,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:24:17,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:24:17,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:24:17,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:24:17,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:24:17,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:24:17,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:24:17,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:24:17,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:24:17,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:24:17,589 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.rcfgbuilder: Size of a code block -> SingleStatement 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;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;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;log-additional-information=true; [2020-09-24 17:24:18,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:24:18,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:24:18,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:24:18,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:24:18,072 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:24:18,073 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 17:24:18,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96a67ab4d/eb9fded8b7c94c5dae58bf9d10bc241e/FLAG737507084 [2020-09-24 17:24:18,861 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:24:18,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 17:24:18,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96a67ab4d/eb9fded8b7c94c5dae58bf9d10bc241e/FLAG737507084 [2020-09-24 17:24:19,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96a67ab4d/eb9fded8b7c94c5dae58bf9d10bc241e [2020-09-24 17:24:19,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:24:19,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:24:19,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:24:19,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:24:19,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:24:19,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:24:19" (1/1) ... [2020-09-24 17:24:19,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b134fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:19, skipping insertion in model container [2020-09-24 17:24:19,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:24:19" (1/1) ... [2020-09-24 17:24:19,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:24:19,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:24:19,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:24:19,904 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:24:20,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:24:20,426 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:24:20,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20 WrapperNode [2020-09-24 17:24:20,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:24:20,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:24:20,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:24:20,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:24:20,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ... [2020-09-24 17:24:20,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ... [2020-09-24 17:24:20,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ... [2020-09-24 17:24:20,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ... [2020-09-24 17:24:20,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ... [2020-09-24 17:24:20,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ... [2020-09-24 17:24:20,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (1/1) ... [2020-09-24 17:24:20,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:24:20,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:24:20,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:24:20,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:24:20,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (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 [2020-09-24 17:24:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:24:20,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:24:20,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:24:20,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:24:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:24:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 17:24:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 17:24:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 17:24:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:24:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:24:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 17:24:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 17:24:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 17:24:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 17:24:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 17:24:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 17:24:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 17:24:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:24:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:24:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:24:23,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:24:23,008 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:24:23,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:24:23 BoogieIcfgContainer [2020-09-24 17:24:23,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:24:23,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:24:23,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:24:23,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:24:23,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:24:19" (1/3) ... [2020-09-24 17:24:23,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a832e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:24:23, skipping insertion in model container [2020-09-24 17:24:23,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:20" (2/3) ... [2020-09-24 17:24:23,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a832e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:24:23, skipping insertion in model container [2020-09-24 17:24:23,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:24:23" (3/3) ... [2020-09-24 17:24:23,033 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 17:24:23,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:24:23,058 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 17:24:23,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 17:24:23,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:24:23,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:24:23,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:24:23,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:24:23,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:24:23,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:24:23,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:24:23,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:24:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-24 17:24:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-24 17:24:23,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:24:23,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:24:23,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:24:23,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:24:23,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-24 17:24:23,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:24:23,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967236244] [2020-09-24 17:24:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:24:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:28,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:25:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:25:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:25:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:25:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:25:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:25:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:25:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking...