/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:42:00,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:42:00,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:42:00,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:42:00,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:42:00,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:42:00,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:42:00,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:42:00,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:42:00,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:42:00,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:42:00,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:42:00,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:42:00,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:42:00,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:42:00,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:42:00,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:42:00,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:42:00,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:42:00,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:42:00,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:42:00,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:42:00,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:42:00,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:42:00,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:42:00,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:42:00,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:42:00,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:42:00,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:42:00,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:42:00,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:42:00,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:42:00,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:42:00,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:42:00,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:42:00,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:42:00,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:42:00,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:42:00,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:42:00,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:42:00,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:42:00,169 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 [2020-09-25 13:42:00,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:42:00,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:42:00,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:42:00,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:42:00,212 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:42:00,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:42:00,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:42:00,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:42:00,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:42:00,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:42:00,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:42:00,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:42:00,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:42:00,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:42:00,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:42:00,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:42:00,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:42:00,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:42:00,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:42:00,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:42:00,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:42:00,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:42:00,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:42:00,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:42:00,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:42:00,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:42:00,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:42:00,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:42:00,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:42:00,220 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:42:00,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:42:00,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:42:00,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:42:00,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:42:00,694 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:42:00,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:42:00,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/465e996d8/6e3009e1cade45fdbd3b1baa8bf7c757/FLAG47c916dce [2020-09-25 13:42:01,490 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:42:01,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:42:01,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/465e996d8/6e3009e1cade45fdbd3b1baa8bf7c757/FLAG47c916dce [2020-09-25 13:42:01,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/465e996d8/6e3009e1cade45fdbd3b1baa8bf7c757 [2020-09-25 13:42:01,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:42:01,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:42:01,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:42:01,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:42:01,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:42:01,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:42:01" (1/1) ... [2020-09-25 13:42:01,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a00abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:01, skipping insertion in model container [2020-09-25 13:42:01,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:42:01" (1/1) ... [2020-09-25 13:42:01,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:42:01,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:42:02,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:42:02,465 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:42:02,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:42:03,000 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:42:03,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03 WrapperNode [2020-09-25 13:42:03,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:42:03,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:42:03,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:42:03,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:42:03,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (1/1) ... [2020-09-25 13:42:03,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (1/1) ... [2020-09-25 13:42:03,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (1/1) ... [2020-09-25 13:42:03,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (1/1) ... [2020-09-25 13:42:03,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (1/1) ... [2020-09-25 13:42:03,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (1/1) ... [2020-09-25 13:42:03,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (1/1) ... [2020-09-25 13:42:03,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:42:03,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:42:03,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:42:03,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:42:03,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (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 [2020-09-25 13:42:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:42:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:42:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:42:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:42:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:42:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 13:42:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 13:42:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 13:42:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 13:42:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:42:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:42:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 13:42:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 13:42:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 13:42:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 13:42:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 13:42:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 13:42:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 13:42:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:42:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:42:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:42:05,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:42:05,475 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:42:05,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:42:05 BoogieIcfgContainer [2020-09-25 13:42:05,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:42:05,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:42:05,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:42:05,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:42:05,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:42:01" (1/3) ... [2020-09-25 13:42:05,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb856a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:42:05, skipping insertion in model container [2020-09-25 13:42:05,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:03" (2/3) ... [2020-09-25 13:42:05,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb856a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:42:05, skipping insertion in model container [2020-09-25 13:42:05,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:42:05" (3/3) ... [2020-09-25 13:42:05,505 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:42:05,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:42:05,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 13:42:05,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 13:42:05,585 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:42:05,585 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:42:05,585 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:42:05,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:42:05,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:42:05,586 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:42:05,586 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:42:05,586 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:42:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-25 13:42:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 13:42:05,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:42:05,671 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] [2020-09-25 13:42:05,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:42:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:42:05,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-25 13:42:05,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:42:05,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480648107] [2020-09-25 13:42:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:42:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:06,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:11,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:11,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 13:42:11,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:42:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:42:11,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:11,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:42:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-25 13:42:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 13:42:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:42:11,965 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 13:42:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:42:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:12,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:42:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:42:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 13:42:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:12,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:42:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:42:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:42:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:42:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:42:12,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480648107] [2020-09-25 13:42:12,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:42:12,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:42:12,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567833991] [2020-09-25 13:42:12,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:42:12,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:42:12,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:42:12,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:42:12,415 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-25 13:42:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:42:16,958 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-25 13:42:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:42:16,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-25 13:42:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:42:16,993 INFO L225 Difference]: With dead ends: 1830 [2020-09-25 13:42:16,993 INFO L226 Difference]: Without dead ends: 1312 [2020-09-25 13:42:17,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:42:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-25 13:42:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-25 13:42:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 13:42:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-25 13:42:17,168 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-25 13:42:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:42:17,174 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-25 13:42:17,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:42:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-25 13:42:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 13:42:17,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:42:17,187 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] [2020-09-25 13:42:17,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:42:17,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:42:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:42:17,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-25 13:42:17,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:42:17,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678329021] [2020-09-25 13:42:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:42:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:17,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:22,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:22,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 13:42:22,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:42:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 13:42:22,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:22,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:42:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 13:42:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:42:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:42:23,038 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 13:42:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:42:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:23,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:23,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:23,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:42:23,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:42:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:42:23,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:23,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:42:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:42:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:42:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:42:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:42:23,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678329021] [2020-09-25 13:42:23,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:42:23,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:42:23,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821788070] [2020-09-25 13:42:23,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:42:23,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:42:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:42:23,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:42:23,597 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-25 13:42:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:42:30,820 INFO L93 Difference]: Finished difference Result 3464 states and 4203 transitions. [2020-09-25 13:42:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:42:30,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-25 13:42:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:42:30,835 INFO L225 Difference]: With dead ends: 3464 [2020-09-25 13:42:30,835 INFO L226 Difference]: Without dead ends: 2371 [2020-09-25 13:42:30,841 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 [2020-09-25 13:42:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-09-25 13:42:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2246. [2020-09-25 13:42:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2246 states. [2020-09-25 13:42:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 2730 transitions. [2020-09-25 13:42:30,934 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 2730 transitions. Word has length 414 [2020-09-25 13:42:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:42:30,935 INFO L479 AbstractCegarLoop]: Abstraction has 2246 states and 2730 transitions. [2020-09-25 13:42:30,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:42:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 2730 transitions. [2020-09-25 13:42:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 13:42:30,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:42:30,941 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] [2020-09-25 13:42:30,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:42:30,942 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:42:30,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:42:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1512250717, now seen corresponding path program 1 times [2020-09-25 13:42:30,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:42:30,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761304599] [2020-09-25 13:42:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:42:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:31,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:31,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-25 13:42:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:42:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-25 13:42:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:36,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:42:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 13:42:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 13:42:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:42:36,483 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 13:42:36,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:42:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:36,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:36,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:36,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:42:36,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:42:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 13:42:36,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:36,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:42:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:42:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:42:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:42:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:42:36,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761304599] [2020-09-25 13:42:36,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:42:36,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:42:36,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632687032] [2020-09-25 13:42:36,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:42:36,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:42:36,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:42:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:42:36,862 INFO L87 Difference]: Start difference. First operand 2246 states and 2730 transitions. Second operand 5 states. [2020-09-25 13:42:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:42:43,142 INFO L93 Difference]: Finished difference Result 6208 states and 7594 transitions. [2020-09-25 13:42:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:42:43,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-25 13:42:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:42:43,162 INFO L225 Difference]: With dead ends: 6208 [2020-09-25 13:42:43,162 INFO L226 Difference]: Without dead ends: 4164 [2020-09-25 13:42:43,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:42:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2020-09-25 13:42:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4056. [2020-09-25 13:42:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4056 states. [2020-09-25 13:42:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4949 transitions. [2020-09-25 13:42:43,310 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4949 transitions. Word has length 415 [2020-09-25 13:42:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:42:43,311 INFO L479 AbstractCegarLoop]: Abstraction has 4056 states and 4949 transitions. [2020-09-25 13:42:43,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:42:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4949 transitions. [2020-09-25 13:42:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-25 13:42:43,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:42:43,325 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] [2020-09-25 13:42:43,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:42:43,326 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:42:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:42:43,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1711630169, now seen corresponding path program 1 times [2020-09-25 13:42:43,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:42:43,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064149178] [2020-09-25 13:42:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:42:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:48,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:48,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-25 13:42:48,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:42:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:42:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:48,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:42:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-25 13:42:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 13:42:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:42:48,805 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 13:42:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:42:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:48,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:42:48,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:42:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 13:42:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:48,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:42:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:42:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:42:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1