/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:44:39,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:44:39,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:44:39,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:44:39,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:44:39,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:44:39,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:44:39,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:44:39,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:44:39,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:44:39,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:44:39,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:44:39,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:44:39,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:44:39,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:44:39,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:44:39,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:44:39,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:44:39,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:44:39,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:44:39,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:44:39,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:44:39,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:44:39,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:44:39,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:44:39,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:44:39,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:44:39,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:44:39,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:44:39,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:44:39,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:44:39,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:44:39,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:44:39,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:44:39,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:44:39,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:44:39,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:44:39,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:44:39,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:44:39,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:44:39,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:44:39,593 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 20:44:39,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:44:39,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:44:39,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:44:39,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:44:39,640 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:44:39,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:44:39,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:44:39,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:44:39,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:44:39,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:44:39,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:44:39,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:44:39,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:44:39,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:44:39,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:44:39,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:44:39,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:44:39,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:44:39,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:44:39,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:44:39,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:44:39,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:44:39,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:44:39,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:44:39,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:44:39,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:44:39,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:44:39,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:44:39,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:44:39,647 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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:44:40,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:44:40,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:44:40,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:44:40,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:44:40,129 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:44:40,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 20:44:40,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ac913095/25dba956408c4c95b1373f3716cd9c64/FLAG6fe83aef0 [2020-09-24 20:44:40,932 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:44:40,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 20:44:40,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ac913095/25dba956408c4c95b1373f3716cd9c64/FLAG6fe83aef0 [2020-09-24 20:44:41,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ac913095/25dba956408c4c95b1373f3716cd9c64 [2020-09-24 20:44:41,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:44:41,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:44:41,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:44:41,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:44:41,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:44:41,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:44:41" (1/1) ... [2020-09-24 20:44:41,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fd2f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:41, skipping insertion in model container [2020-09-24 20:44:41,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:44:41" (1/1) ... [2020-09-24 20:44:41,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:44:41,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:44:41,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:44:42,020 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:44:42,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:44:42,515 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:44:42,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42 WrapperNode [2020-09-24 20:44:42,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:44:42,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:44:42,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:44:42,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:44:42,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:44:42,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:44:42,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:44:42,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:44:42,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (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 20:44:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:44:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:44:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:44:42,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:44:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:44:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:44:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:44:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 20:44:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:44:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:44:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 20:44:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 20:44:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 20:44:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 20:44:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 20:44:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 20:44:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:44:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:44:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:44:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:44:44,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:44:44,874 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:44:44,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:44:44 BoogieIcfgContainer [2020-09-24 20:44:44,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:44:44,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:44:44,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:44:44,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:44:44,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:44:41" (1/3) ... [2020-09-24 20:44:44,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124affd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:44:44, skipping insertion in model container [2020-09-24 20:44:44,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42" (2/3) ... [2020-09-24 20:44:44,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124affd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:44:44, skipping insertion in model container [2020-09-24 20:44:44,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:44:44" (3/3) ... [2020-09-24 20:44:44,901 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 20:44:44,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:44:44,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 20:44:44,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 20:44:44,987 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:44:44,987 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:44:44,987 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:44:44,987 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:44:44,987 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:44:44,988 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:44:44,988 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:44:44,988 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:44:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states. [2020-09-24 20:44:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-24 20:44:45,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:44:45,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:45,074 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:44:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:44:45,082 INFO L82 PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times [2020-09-24 20:44:45,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:44:45,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695758192] [2020-09-24 20:44:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:44:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:44:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:46,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:50,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:44:50,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-24 20:44:50,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:44:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-24 20:44:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:44:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:44:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-24 20:44:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 20:44:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:44:51,485 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:44:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:44:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:44:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:44:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:44:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:44:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 20:44:51,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:44:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:44:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:44:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:44:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:44:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:44:52,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695758192] [2020-09-24 20:44:52,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:44:52,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:44:52,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370906760] [2020-09-24 20:44:52,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:44:52,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:44:52,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:44:52,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:44:52,041 INFO L87 Difference]: Start difference. First operand 1127 states. Second operand 5 states. [2020-09-24 20:45:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:00,430 INFO L93 Difference]: Finished difference Result 2817 states and 3621 transitions. [2020-09-24 20:45:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:45:00,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-09-24 20:45:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:00,484 INFO L225 Difference]: With dead ends: 2817 [2020-09-24 20:45:00,484 INFO L226 Difference]: Without dead ends: 1752 [2020-09-24 20:45:00,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-09-24 20:45:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1630. [2020-09-24 20:45:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2020-09-24 20:45:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 1931 transitions. [2020-09-24 20:45:00,653 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 1931 transitions. Word has length 423 [2020-09-24 20:45:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:00,655 INFO L479 AbstractCegarLoop]: Abstraction has 1630 states and 1931 transitions. [2020-09-24 20:45:00,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 1931 transitions. [2020-09-24 20:45:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-24 20:45:00,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:00,667 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] [2020-09-24 20:45:00,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:45:00,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:00,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1809298377, now seen corresponding path program 1 times [2020-09-24 20:45:00,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:00,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569731802] [2020-09-24 20:45:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:01,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-09-24 20:45:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:45:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 20:45:05,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 20:45:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 20:45:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:06,313 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:45:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:06,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:45:06,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:45:06,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:06,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:06,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:45:06,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569731802] [2020-09-24 20:45:06,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:06,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:06,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275547867] [2020-09-24 20:45:06,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:06,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:06,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:06,987 INFO L87 Difference]: Start difference. First operand 1630 states and 1931 transitions. Second operand 5 states. [2020-09-24 20:45:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:14,044 INFO L93 Difference]: Finished difference Result 4423 states and 5285 transitions. [2020-09-24 20:45:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:45:14,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-09-24 20:45:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:14,066 INFO L225 Difference]: With dead ends: 4423 [2020-09-24 20:45:14,066 INFO L226 Difference]: Without dead ends: 2999 [2020-09-24 20:45:14,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-09-24 20:45:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2886. [2020-09-24 20:45:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2886 states. [2020-09-24 20:45:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3445 transitions. [2020-09-24 20:45:14,195 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3445 transitions. Word has length 424 [2020-09-24 20:45:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:14,197 INFO L479 AbstractCegarLoop]: Abstraction has 2886 states and 3445 transitions. [2020-09-24 20:45:14,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3445 transitions. [2020-09-24 20:45:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-24 20:45:14,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:14,210 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] [2020-09-24 20:45:14,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:45:14,211 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1470747401, now seen corresponding path program 1 times [2020-09-24 20:45:14,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:14,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036322190] [2020-09-24 20:45:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:16,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:19,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:19,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-09-24 20:45:19,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:45:19,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:45:19,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-24 20:45:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 20:45:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:19,773 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:45:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:45:19,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 20:45:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:45:20,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036322190] [2020-09-24 20:45:20,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:20,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:20,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478910084] [2020-09-24 20:45:20,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:20,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:20,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:20,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:20,132 INFO L87 Difference]: Start difference. First operand 2886 states and 3445 transitions. Second operand 5 states. [2020-09-24 20:45:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:26,670 INFO L93 Difference]: Finished difference Result 8046 states and 9633 transitions. [2020-09-24 20:45:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:45:26,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-09-24 20:45:26,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:26,695 INFO L225 Difference]: With dead ends: 8046 [2020-09-24 20:45:26,695 INFO L226 Difference]: Without dead ends: 5371 [2020-09-24 20:45:26,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2020-09-24 20:45:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 5263. [2020-09-24 20:45:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5263 states. [2020-09-24 20:45:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 6273 transitions. [2020-09-24 20:45:26,893 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 6273 transitions. Word has length 425 [2020-09-24 20:45:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:26,893 INFO L479 AbstractCegarLoop]: Abstraction has 5263 states and 6273 transitions. [2020-09-24 20:45:26,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 6273 transitions. [2020-09-24 20:45:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-09-24 20:45:26,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:26,910 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] [2020-09-24 20:45:26,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:45:26,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:26,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash -415893475, now seen corresponding path program 1 times [2020-09-24 20:45:26,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:26,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439263852] [2020-09-24 20:45:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:27,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:27,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking...