/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:17:28,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:17:28,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:17:28,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:17:28,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:17:28,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:17:28,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:17:28,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:17:28,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:17:28,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:17:28,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:17:28,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:17:28,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:17:28,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:17:28,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:17:28,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:17:28,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:17:28,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:17:28,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:17:28,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:17:28,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:17:28,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:17:28,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:17:28,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:17:28,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:17:28,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:17:28,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:17:28,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:17:28,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:17:28,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:17:28,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:17:28,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:17:28,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:17:28,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:17:28,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:17:28,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:17:28,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:17:28,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:17:28,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:17:28,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:17:28,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:17:28,239 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 [2020-10-15 04:17:28,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:17:28,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:17:28,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:17:28,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:17:28,273 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:17:28,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:17:28,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:17:28,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:17:28,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:17:28,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:17:28,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:17:28,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:17:28,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:17:28,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:17:28,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:17:28,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:17:28,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:17:28,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:17:28,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:17:28,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:17:28,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:17:28,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:17:28,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:17:28,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:17:28,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:17:28,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:17:28,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:17:28,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:17:28,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:17:28,277 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:17:28,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:17:28,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:17:28,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:17:28,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:17:28,613 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:17:28,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 04:17:28,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7caa4b6/a3a7bef0b4e8424d89c4940d53f9ce1e/FLAG82aa8cbc2 [2020-10-15 04:17:29,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:17:29,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 04:17:29,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7caa4b6/a3a7bef0b4e8424d89c4940d53f9ce1e/FLAG82aa8cbc2 [2020-10-15 04:17:29,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7caa4b6/a3a7bef0b4e8424d89c4940d53f9ce1e [2020-10-15 04:17:29,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:17:29,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:17:29,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:17:29,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:17:29,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:17:29,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:29" (1/1) ... [2020-10-15 04:17:29,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4147c445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:29, skipping insertion in model container [2020-10-15 04:17:29,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:29" (1/1) ... [2020-10-15 04:17:29,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:17:29,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:17:31,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:17:31,124 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:17:31,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:17:31,954 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:17:31,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31 WrapperNode [2020-10-15 04:17:31,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:17:31,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:17:31,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:17:31,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:17:31,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (1/1) ... [2020-10-15 04:17:31,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (1/1) ... [2020-10-15 04:17:32,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (1/1) ... [2020-10-15 04:17:32,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (1/1) ... [2020-10-15 04:17:32,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (1/1) ... [2020-10-15 04:17:32,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (1/1) ... [2020-10-15 04:17:32,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (1/1) ... [2020-10-15 04:17:32,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:17:32,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:17:32,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:17:32,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:17:32,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (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 [2020-10-15 04:17:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:17:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:17:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:17:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:17:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:17:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:17:32,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:17:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:17:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:17:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:17:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:17:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:17:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:17:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:17:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:17:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:17:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:17:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:17:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:17:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:17:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:17:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:17:36,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:17:36,150 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:17:36,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:36 BoogieIcfgContainer [2020-10-15 04:17:36,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:17:36,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:17:36,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:17:36,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:17:36,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:17:29" (1/3) ... [2020-10-15 04:17:36,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87df4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:36, skipping insertion in model container [2020-10-15 04:17:36,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:31" (2/3) ... [2020-10-15 04:17:36,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87df4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:36, skipping insertion in model container [2020-10-15 04:17:36,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:36" (3/3) ... [2020-10-15 04:17:36,178 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 04:17:36,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:17:36,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:17:36,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:17:36,254 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:17:36,254 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:17:36,254 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:17:36,254 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:17:36,254 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:17:36,254 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:17:36,255 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:17:36,255 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:17:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states. [2020-10-15 04:17:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-15 04:17:36,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:36,379 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] [2020-10-15 04:17:36,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:36,386 INFO L82 PathProgramCache]: Analyzing trace with hash -313895885, now seen corresponding path program 1 times [2020-10-15 04:17:36,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:36,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850594528] [2020-10-15 04:17:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:42,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:42,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-15 04:17:42,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:17:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5179 [2020-10-15 04:17:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:42,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 04:17:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:17:44,330 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-15 04:17:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:44,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:44,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-15 04:17:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:44,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:44,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:44,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850594528] [2020-10-15 04:17:44,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:44,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:44,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781195988] [2020-10-15 04:17:44,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:44,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:44,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:44,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:44,970 INFO L87 Difference]: Start difference. First operand 1549 states. Second operand 5 states. [2020-10-15 04:17:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:59,489 INFO L93 Difference]: Finished difference Result 4486 states and 7963 transitions. [2020-10-15 04:17:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:17:59,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-10-15 04:17:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:59,552 INFO L225 Difference]: With dead ends: 4486 [2020-10-15 04:17:59,552 INFO L226 Difference]: Without dead ends: 3044 [2020-10-15 04:17:59,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2020-10-15 04:17:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3042. [2020-10-15 04:17:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3042 states. [2020-10-15 04:17:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5111 transitions. [2020-10-15 04:17:59,948 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5111 transitions. Word has length 391 [2020-10-15 04:17:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:59,955 INFO L479 AbstractCegarLoop]: Abstraction has 3042 states and 5111 transitions. [2020-10-15 04:17:59,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5111 transitions. [2020-10-15 04:17:59,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-15 04:17:59,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:59,982 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] [2020-10-15 04:17:59,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:17:59,983 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:59,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1700220, now seen corresponding path program 1 times [2020-10-15 04:17:59,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:59,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410848574] [2020-10-15 04:17:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:05,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:05,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-15 04:18:05,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:18:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-15 04:18:05,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:05,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-15 04:18:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:06,559 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-15 04:18:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:06,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:06,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:18:06,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:06,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:07,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410848574] [2020-10-15 04:18:07,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:07,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:07,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320456749] [2020-10-15 04:18:07,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:07,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:07,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:07,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:07,096 INFO L87 Difference]: Start difference. First operand 3042 states and 5111 transitions. Second operand 5 states. [2020-10-15 04:18:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:20,898 INFO L93 Difference]: Finished difference Result 8911 states and 14953 transitions. [2020-10-15 04:18:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:18:20,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-10-15 04:18:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:20,932 INFO L225 Difference]: With dead ends: 8911 [2020-10-15 04:18:20,932 INFO L226 Difference]: Without dead ends: 5954 [2020-10-15 04:18:20,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5954 states. [2020-10-15 04:18:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5954 to 5952. [2020-10-15 04:18:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5952 states. [2020-10-15 04:18:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 9957 transitions. [2020-10-15 04:18:21,343 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 9957 transitions. Word has length 391 [2020-10-15 04:18:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:21,344 INFO L479 AbstractCegarLoop]: Abstraction has 5952 states and 9957 transitions. [2020-10-15 04:18:21,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 9957 transitions. [2020-10-15 04:18:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-15 04:18:21,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:21,364 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] [2020-10-15 04:18:21,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:18:21,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:21,365 INFO L82 PathProgramCache]: Analyzing trace with hash -468466962, now seen corresponding path program 1 times [2020-10-15 04:18:21,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:21,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201025913] [2020-10-15 04:18:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:23,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:26,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:26,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:26,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-15 04:18:26,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:18:26,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:18:26,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:26,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:18:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:18:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-15 04:18:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:27,454 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-15 04:18:27,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:27,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:27,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 04:18:27,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:27,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:27,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201025913] [2020-10-15 04:18:27,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:27,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:18:27,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704668568] [2020-10-15 04:18:27,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:18:27,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:18:27,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:27,813 INFO L87 Difference]: Start difference. First operand 5952 states and 9957 transitions. Second operand 4 states. [2020-10-15 04:18:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:45,214 INFO L93 Difference]: Finished difference Result 17144 states and 28575 transitions. [2020-10-15 04:18:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:18:45,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2020-10-15 04:18:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:45,264 INFO L225 Difference]: With dead ends: 17144 [2020-10-15 04:18:45,265 INFO L226 Difference]: Without dead ends: 11542 [2020-10-15 04:18:45,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2020-10-15 04:18:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 11540. [2020-10-15 04:18:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11540 states. [2020-10-15 04:18:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11540 states to 11540 states and 19193 transitions. [2020-10-15 04:18:45,959 INFO L78 Accepts]: Start accepts. Automaton has 11540 states and 19193 transitions. Word has length 393 [2020-10-15 04:18:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:45,960 INFO L479 AbstractCegarLoop]: Abstraction has 11540 states and 19193 transitions. [2020-10-15 04:18:45,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:18:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 11540 states and 19193 transitions. [2020-10-15 04:18:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-15 04:18:45,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:45,987 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] [2020-10-15 04:18:45,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:18:45,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:45,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:45,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2044871151, now seen corresponding path program 1 times [2020-10-15 04:18:45,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:45,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893231796] [2020-10-15 04:18:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:51,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-15 04:18:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:18:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:18:51,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:51,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-15 04:18:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:52,238 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-15 04:18:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:52,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:52,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:52,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:18:52,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:52,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:52,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893231796] [2020-10-15 04:18:52,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:52,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:52,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211059997] [2020-10-15 04:18:52,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:52,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:52,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:52,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:52,464 INFO L87 Difference]: Start difference. First operand 11540 states and 19193 transitions. Second operand 5 states. [2020-10-15 04:19:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:10,930 INFO L93 Difference]: Finished difference Result 34125 states and 56712 transitions. [2020-10-15 04:19:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:10,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-10-15 04:19:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:10,988 INFO L225 Difference]: With dead ends: 34125 [2020-10-15 04:19:10,989 INFO L226 Difference]: Without dead ends: 22708 [2020-10-15 04:19:11,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:19:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22708 states. [2020-10-15 04:19:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22708 to 22706. [2020-10-15 04:19:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22706 states. [2020-10-15 04:19:12,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22706 states to 22706 states and 37586 transitions. [2020-10-15 04:19:12,049 INFO L78 Accepts]: Start accepts. Automaton has 22706 states and 37586 transitions. Word has length 393 [2020-10-15 04:19:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:12,050 INFO L479 AbstractCegarLoop]: Abstraction has 22706 states and 37586 transitions. [2020-10-15 04:19:12,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:19:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22706 states and 37586 transitions. [2020-10-15 04:19:12,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-15 04:19:12,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:12,092 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] [2020-10-15 04:19:12,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:19:12,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:12,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1831303872, now seen corresponding path program 1 times [2020-10-15 04:19:12,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:12,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506508113] [2020-10-15 04:19:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:16,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:17,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-15 04:19:17,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:19:17,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:19:17,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:17,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:19:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 04:19:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-15 04:19:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:18,154 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-15 04:19:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:18,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:18,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:18,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:19:18,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:18,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:18,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:19:18,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506508113] [2020-10-15 04:19:18,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:18,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:19:18,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865567089] [2020-10-15 04:19:18,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:19:18,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:18,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:19:18,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:19:18,353 INFO L87 Difference]: Start difference. First operand 22706 states and 37586 transitions. Second operand 4 states. [2020-10-15 04:19:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:37,043 INFO L93 Difference]: Finished difference Result 66830 states and 110485 transitions. [2020-10-15 04:19:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:19:37,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-10-15 04:19:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:37,149 INFO L225 Difference]: With dead ends: 66830 [2020-10-15 04:19:37,149 INFO L226 Difference]: Without dead ends: 44812 [2020-10-15 04:19:37,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:19:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44812 states. [2020-10-15 04:19:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44812 to 44810. [2020-10-15 04:19:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44810 states. [2020-10-15 04:19:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44810 states to 44810 states and 73867 transitions. [2020-10-15 04:19:39,974 INFO L78 Accepts]: Start accepts. Automaton has 44810 states and 73867 transitions. Word has length 395 [2020-10-15 04:19:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:39,974 INFO L479 AbstractCegarLoop]: Abstraction has 44810 states and 73867 transitions. [2020-10-15 04:19:39,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:19:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 44810 states and 73867 transitions. [2020-10-15 04:19:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-15 04:19:40,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:40,022 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] [2020-10-15 04:19:40,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:19:40,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1890463150, now seen corresponding path program 1 times [2020-10-15 04:19:40,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:40,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372706610] [2020-10-15 04:19:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:40,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:41,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:41,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-15 04:19:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:45,973 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-15 04:19:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:46,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:46,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:19:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:46,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:19:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:19:46,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372706610] [2020-10-15 04:19:46,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:46,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:19:46,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317069510] [2020-10-15 04:19:46,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:19:46,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:46,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:19:46,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:19:46,223 INFO L87 Difference]: Start difference. First operand 44810 states and 73867 transitions. Second operand 4 states. [2020-10-15 04:20:11,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:20:11,942 INFO L93 Difference]: Finished difference Result 131661 states and 216734 transitions. [2020-10-15 04:20:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:20:11,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-10-15 04:20:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:20:12,067 INFO L225 Difference]: With dead ends: 131661 [2020-10-15 04:20:12,068 INFO L226 Difference]: Without dead ends: 88619 [2020-10-15 04:20:12,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:20:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88619 states. [2020-10-15 04:20:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88619 to 88617. [2020-10-15 04:20:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88617 states. [2020-10-15 04:20:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88617 states to 88617 states and 145484 transitions. [2020-10-15 04:20:18,395 INFO L78 Accepts]: Start accepts. Automaton has 88617 states and 145484 transitions. Word has length 395 [2020-10-15 04:20:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:20:18,396 INFO L479 AbstractCegarLoop]: Abstraction has 88617 states and 145484 transitions. [2020-10-15 04:20:18,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:20:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 88617 states and 145484 transitions. [2020-10-15 04:20:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-15 04:20:18,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:20:18,510 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] [2020-10-15 04:20:18,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:20:18,510 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:20:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:20:18,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1425303662, now seen corresponding path program 1 times [2020-10-15 04:20:18,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:20:18,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758463341] [2020-10-15 04:20:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:20:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:20:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:18,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:19,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:23,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:20:23,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-15 04:20:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:20:24,541 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-15 04:20:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:20:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:20:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:20:24,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:20:24,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:20:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:20:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:20:24,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:20:24,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:20:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:20:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:20:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:20:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:20:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:20:24,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758463341] [2020-10-15 04:20:24,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:20:24,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:20:24,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875646683] [2020-10-15 04:20:24,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:20:24,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:20:24,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:20:24,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:20:24,741 INFO L87 Difference]: Start difference. First operand 88617 states and 145484 transitions. Second operand 4 states. [2020-10-15 04:20:55,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:20:55,471 INFO L93 Difference]: Finished difference Result 261637 states and 429096 transitions. [2020-10-15 04:20:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:20:55,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2020-10-15 04:20:55,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:20:55,713 INFO L225 Difference]: With dead ends: 261637 [2020-10-15 04:20:55,714 INFO L226 Difference]: Without dead ends: 174753 [2020-10-15 04:20:55,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:20:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174753 states. [2020-10-15 04:21:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174753 to 174751. [2020-10-15 04:21:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174751 states. [2020-10-15 04:21:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174751 states to 174751 states and 285648 transitions. [2020-10-15 04:21:05,508 INFO L78 Accepts]: Start accepts. Automaton has 174751 states and 285648 transitions. Word has length 396 [2020-10-15 04:21:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:21:05,508 INFO L479 AbstractCegarLoop]: Abstraction has 174751 states and 285648 transitions. [2020-10-15 04:21:05,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:21:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand 174751 states and 285648 transitions. [2020-10-15 04:21:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-15 04:21:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:21:05,668 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] [2020-10-15 04:21:05,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:21:05,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:21:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:21:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash -691930359, now seen corresponding path program 1 times [2020-10-15 04:21:05,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:21:05,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770896193] [2020-10-15 04:21:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:21:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:21:05,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:06,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:07,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:21:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking...