/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:37:04,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:37:04,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:37:04,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:37:04,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:37:04,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:37:04,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:37:04,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:37:04,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:37:04,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:37:04,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:37:04,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:37:04,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:37:04,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:37:04,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:37:04,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:37:04,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:37:04,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:37:04,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:37:04,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:37:04,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:37:04,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:37:04,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:37:04,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:37:04,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:37:04,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:37:04,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:37:04,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:37:04,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:37:04,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:37:04,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:37:04,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:37:04,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:37:04,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:37:04,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:37:04,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:37:04,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:37:04,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:37:04,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:37:04,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:37:04,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:37:04,232 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 [2020-10-14 09:37:04,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:37:04,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:37:04,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:37:04,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:37:04,278 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:37:04,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:37:04,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:37:04,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:37:04,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:37:04,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:37:04,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:37:04,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:37:04,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:37:04,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:37:04,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:37:04,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:37:04,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:37:04,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:37:04,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:37:04,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:37:04,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:37:04,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:37:04,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:37:04,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:37:04,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:37:04,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:37:04,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:37:04,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:37:04,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:37:04,283 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:37:04,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:37:04,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:37:04,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:37:04,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:37:04,593 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:37:04,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-14 09:37:04,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4016f24a/f42c77c2644b44f0a18ab3998798529a/FLAGd1b866f73 [2020-10-14 09:37:05,642 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:37:05,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-14 09:37:05,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4016f24a/f42c77c2644b44f0a18ab3998798529a/FLAGd1b866f73 [2020-10-14 09:37:06,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4016f24a/f42c77c2644b44f0a18ab3998798529a [2020-10-14 09:37:06,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:37:06,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:37:06,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:37:06,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:37:06,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:37:06,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:06" (1/1) ... [2020-10-14 09:37:06,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ca2915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:06, skipping insertion in model container [2020-10-14 09:37:06,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:06" (1/1) ... [2020-10-14 09:37:06,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:37:06,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:37:11,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:37:11,061 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:37:14,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:37:14,575 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:37:14,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14 WrapperNode [2020-10-14 09:37:14,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:37:14,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:37:14,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:37:14,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:37:14,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:14,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:14,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:14,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:14,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:37:15,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:37:15,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:37:15,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:37:15,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (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 [2020-10-14 09:37:15,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:37:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:37:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:37:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:37:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:37:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:37:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:37:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:37:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:37:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:37:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:37:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:37:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:37:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:37:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:37:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:37:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:37:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:37:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:37:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:37:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:37:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:37:30,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:37:30,123 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:37:30,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:30 BoogieIcfgContainer [2020-10-14 09:37:30,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:37:30,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:37:30,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:37:30,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:37:30,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:37:06" (1/3) ... [2020-10-14 09:37:30,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:30, skipping insertion in model container [2020-10-14 09:37:30,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (2/3) ... [2020-10-14 09:37:30,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2d969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:30, skipping insertion in model container [2020-10-14 09:37:30,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:30" (3/3) ... [2020-10-14 09:37:30,159 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-14 09:37:30,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:37:30,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:37:30,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:37:30,239 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:37:30,239 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:37:30,239 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:37:30,239 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:37:30,239 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:37:30,240 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:37:30,240 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:37:30,240 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:37:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states. [2020-10-14 09:37:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 09:37:30,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:30,484 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] [2020-10-14 09:37:30,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:30,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1833527762, now seen corresponding path program 1 times [2020-10-14 09:37:30,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:30,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979007093] [2020-10-14 09:37:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:34,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:36,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 09:37:36,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:37:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 09:37:36,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:36,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 09:37:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:37:36,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 09:37:38,197 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-14 09:37:38,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:38,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:38,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:38,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:38,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 09:37:38,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:38,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:38,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:38,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:38,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:38,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:38,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979007093] [2020-10-14 09:37:38,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:38,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:38,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948944757] [2020-10-14 09:37:38,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:38,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:38,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:38,620 INFO L87 Difference]: Start difference. First operand 6849 states. Second operand 4 states. [2020-10-14 09:37:40,217 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 501 [2020-10-14 09:38:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:53,399 INFO L93 Difference]: Finished difference Result 13779 states and 23874 transitions. [2020-10-14 09:38:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:53,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 372 [2020-10-14 09:38:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:53,482 INFO L225 Difference]: With dead ends: 13779 [2020-10-14 09:38:53,482 INFO L226 Difference]: Without dead ends: 9047 [2020-10-14 09:38:53,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9047 states. [2020-10-14 09:38:53,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9047 to 8941. [2020-10-14 09:38:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8941 states. [2020-10-14 09:38:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 14850 transitions. [2020-10-14 09:38:53,927 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 14850 transitions. Word has length 372 [2020-10-14 09:38:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:53,929 INFO L479 AbstractCegarLoop]: Abstraction has 8941 states and 14850 transitions. [2020-10-14 09:38:53,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 14850 transitions. [2020-10-14 09:38:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 09:38:53,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:53,965 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] [2020-10-14 09:38:53,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:38:53,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:53,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:53,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1084350025, now seen corresponding path program 1 times [2020-10-14 09:38:53,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:53,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65486995] [2020-10-14 09:38:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:59,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:38:59,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:38:59,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:59,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-14 09:38:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 09:38:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:01,388 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-14 09:39:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:01,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:01,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:01,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 09:39:01,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:01,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:01,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:01,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65486995] [2020-10-14 09:39:01,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:01,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:01,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53293883] [2020-10-14 09:39:01,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:01,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:01,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:01,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:01,829 INFO L87 Difference]: Start difference. First operand 8941 states and 14850 transitions. Second operand 4 states. [2020-10-14 09:39:03,407 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 501 [2020-10-14 09:40:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:08,588 INFO L93 Difference]: Finished difference Result 19729 states and 32951 transitions. [2020-10-14 09:40:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:08,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 372 [2020-10-14 09:40:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:08,652 INFO L225 Difference]: With dead ends: 19729 [2020-10-14 09:40:08,652 INFO L226 Difference]: Without dead ends: 13134 [2020-10-14 09:40:08,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2020-10-14 09:40:09,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 12040. [2020-10-14 09:40:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12040 states. [2020-10-14 09:40:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12040 states to 12040 states and 19992 transitions. [2020-10-14 09:40:09,133 INFO L78 Accepts]: Start accepts. Automaton has 12040 states and 19992 transitions. Word has length 372 [2020-10-14 09:40:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:09,135 INFO L479 AbstractCegarLoop]: Abstraction has 12040 states and 19992 transitions. [2020-10-14 09:40:09,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12040 states and 19992 transitions. [2020-10-14 09:40:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 09:40:09,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:09,170 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] [2020-10-14 09:40:09,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:40:09,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:09,172 INFO L82 PathProgramCache]: Analyzing trace with hash 150377094, now seen corresponding path program 1 times [2020-10-14 09:40:09,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:09,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619338144] [2020-10-14 09:40:09,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:12,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:14,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 09:40:14,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:40:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 09:40:14,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:14,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 09:40:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 09:40:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:16,010 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-14 09:40:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:16,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:16,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:16,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:16,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:40:16,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:16,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:16,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:16,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619338144] [2020-10-14 09:40:16,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:16,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:16,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346761639] [2020-10-14 09:40:16,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:16,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:16,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:16,221 INFO L87 Difference]: Start difference. First operand 12040 states and 19992 transitions. Second operand 4 states. [2020-10-14 09:40:17,722 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 497