/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_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:28:41,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:28:41,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:28:41,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:28:41,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:28:41,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:28:41,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:28:41,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:28:41,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:28:41,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:28:41,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:28:41,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:28:41,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:28:41,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:28:41,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:28:41,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:28:41,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:28:41,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:28:41,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:28:41,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:28:41,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:28:41,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:28:41,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:28:41,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:28:41,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:28:41,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:28:41,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:28:41,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:28:41,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:28:41,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:28:41,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:28:41,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:28:41,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:28:41,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:28:41,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:28:41,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:28:41,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:28:41,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:28:41,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:28:41,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:28:41,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:28:41,261 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 08:28:41,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:28:41,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:28:41,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:28:41,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:28:41,293 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:28:41,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:28:41,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:28:41,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:28:41,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:28:41,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:28:41,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:28:41,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:28:41,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:28:41,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:28:41,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:28:41,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:28:41,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:28:41,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:28:41,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:28:41,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:28:41,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:28:41,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:28:41,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:28:41,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:28:41,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:28:41,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:28:41,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:28:41,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:28:41,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:28:41,298 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 08:28:41,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:28:41,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:28:41,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:28:41,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:28:41,634 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:28:41,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:28:41,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4712fb29c/bdad50cd0345486e913d93e5a89e9958/FLAG6970b3e51 [2020-10-14 08:28:42,398 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:28:42,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:28:42,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4712fb29c/bdad50cd0345486e913d93e5a89e9958/FLAG6970b3e51 [2020-10-14 08:28:42,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4712fb29c/bdad50cd0345486e913d93e5a89e9958 [2020-10-14 08:28:42,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:28:42,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:28:42,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:28:42,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:28:42,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:28:42,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:28:42" (1/1) ... [2020-10-14 08:28:42,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:42, skipping insertion in model container [2020-10-14 08:28:42,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:28:42" (1/1) ... [2020-10-14 08:28:42,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:28:42,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:28:44,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:28:44,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:28:45,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:28:45,061 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:28:45,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45 WrapperNode [2020-10-14 08:28:45,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:28:45,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:28:45,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:28:45,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:28:45,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (1/1) ... [2020-10-14 08:28:45,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (1/1) ... [2020-10-14 08:28:45,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (1/1) ... [2020-10-14 08:28:45,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (1/1) ... [2020-10-14 08:28:45,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (1/1) ... [2020-10-14 08:28:45,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (1/1) ... [2020-10-14 08:28:45,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (1/1) ... [2020-10-14 08:28:45,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:28:45,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:28:45,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:28:45,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:28:45,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (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 08:28:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:28:45,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:28:45,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:28:45,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:28:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:28:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:28:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:28:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:28:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:28:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:28:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:28:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:28:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:28:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:28:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:28:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:28:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:28:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:28:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:28:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:28:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:28:48,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:28:48,245 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:28:48,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:28:48 BoogieIcfgContainer [2020-10-14 08:28:48,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:28:48,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:28:48,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:28:48,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:28:48,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:28:42" (1/3) ... [2020-10-14 08:28:48,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be2ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:28:48, skipping insertion in model container [2020-10-14 08:28:48,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:28:45" (2/3) ... [2020-10-14 08:28:48,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be2ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:28:48, skipping insertion in model container [2020-10-14 08:28:48,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:28:48" (3/3) ... [2020-10-14 08:28:48,264 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-14 08:28:48,275 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:28:48,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-14 08:28:48,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-14 08:28:48,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:28:48,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:28:48,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:28:48,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:28:48,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:28:48,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:28:48,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:28:48,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:28:48,364 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-14 08:28:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 08:28:48,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:28:48,397 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] [2020-10-14 08:28:48,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:28:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:28:48,406 INFO L82 PathProgramCache]: Analyzing trace with hash 390408179, now seen corresponding path program 1 times [2020-10-14 08:28:48,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:28:48,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413913255] [2020-10-14 08:28:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:28:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:54,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:54,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-14 08:28:54,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:28:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 08:28:54,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:54,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:28:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 08:28:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 08:28:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:28:55,270 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:28:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:28:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:28:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:28:55,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:28:55,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:28:55,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:28:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 08:28:55,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:28:55,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:28:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:28:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:28:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:28:55,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:28:55,587 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 08:28:55,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413913255] [2020-10-14 08:28:55,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:28:55,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:28:55,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063442890] [2020-10-14 08:28:55,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:28:55,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:28:55,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:28:55,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:28:55,617 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-14 08:28:56,250 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-10-14 08:29:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:02,859 INFO L93 Difference]: Finished difference Result 1605 states and 2877 transitions. [2020-10-14 08:29:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:02,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2020-10-14 08:29:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:02,893 INFO L225 Difference]: With dead ends: 1605 [2020-10-14 08:29:02,893 INFO L226 Difference]: Without dead ends: 1402 [2020-10-14 08:29:02,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:02,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-10-14 08:29:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1400. [2020-10-14 08:29:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2020-10-14 08:29:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2161 transitions. [2020-10-14 08:29:03,026 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2161 transitions. Word has length 302 [2020-10-14 08:29:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:03,028 INFO L479 AbstractCegarLoop]: Abstraction has 1400 states and 2161 transitions. [2020-10-14 08:29:03,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2161 transitions. [2020-10-14 08:29:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 08:29:03,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:03,035 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] [2020-10-14 08:29:03,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:29:03,036 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash 390069555, now seen corresponding path program 1 times [2020-10-14 08:29:03,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:03,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786643748] [2020-10-14 08:29:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:06,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:08,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:08,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-14 08:29:08,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:29:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 08:29:08,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:08,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:29:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:29:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 08:29:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:09,364 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:29:09,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:09,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 08:29:09,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:09,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:09,683 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 08:29:09,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786643748] [2020-10-14 08:29:09,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:09,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:29:09,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756939358] [2020-10-14 08:29:09,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:29:09,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:09,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:29:09,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:29:09,688 INFO L87 Difference]: Start difference. First operand 1400 states and 2161 transitions. Second operand 5 states. [2020-10-14 08:29:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:19,166 INFO L93 Difference]: Finished difference Result 4132 states and 6374 transitions. [2020-10-14 08:29:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:29:19,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-14 08:29:19,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:19,190 INFO L225 Difference]: With dead ends: 4132 [2020-10-14 08:29:19,190 INFO L226 Difference]: Without dead ends: 2745 [2020-10-14 08:29:19,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:29:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2020-10-14 08:29:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2609. [2020-10-14 08:29:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2609 states. [2020-10-14 08:29:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4020 transitions. [2020-10-14 08:29:19,317 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4020 transitions. Word has length 302 [2020-10-14 08:29:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:19,318 INFO L479 AbstractCegarLoop]: Abstraction has 2609 states and 4020 transitions. [2020-10-14 08:29:19,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:29:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4020 transitions. [2020-10-14 08:29:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 08:29:19,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:19,329 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] [2020-10-14 08:29:19,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:29:19,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:19,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1264363262, now seen corresponding path program 1 times [2020-10-14 08:29:19,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:19,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441776978] [2020-10-14 08:29:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:19,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:24,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:24,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 08:29:24,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:29:24,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 08:29:24,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:24,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:24,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:24,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:29:24,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 08:29:24,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:25,251 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:29:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:25,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:25,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:25,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 08:29:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:25,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:25,593 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 08:29:25,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441776978] [2020-10-14 08:29:25,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:25,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:25,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841486942] [2020-10-14 08:29:25,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:25,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:25,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:25,598 INFO L87 Difference]: Start difference. First operand 2609 states and 4020 transitions. Second operand 4 states. [2020-10-14 08:29:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:35,643 INFO L93 Difference]: Finished difference Result 7581 states and 11639 transitions. [2020-10-14 08:29:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:29:35,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2020-10-14 08:29:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:35,670 INFO L225 Difference]: With dead ends: 7581 [2020-10-14 08:29:35,670 INFO L226 Difference]: Without dead ends: 5112 [2020-10-14 08:29:35,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5112 states. [2020-10-14 08:29:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5112 to 4980. [2020-10-14 08:29:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4980 states. [2020-10-14 08:29:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 7645 transitions. [2020-10-14 08:29:35,863 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 7645 transitions. Word has length 304 [2020-10-14 08:29:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:35,866 INFO L479 AbstractCegarLoop]: Abstraction has 4980 states and 7645 transitions. [2020-10-14 08:29:35,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 7645 transitions. [2020-10-14 08:29:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 08:29:35,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:35,883 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] [2020-10-14 08:29:35,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:29:35,883 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1592200829, now seen corresponding path program 1 times [2020-10-14 08:29:35,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:35,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853560703] [2020-10-14 08:29:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 08:29:40,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:29:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 08:29:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:40,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:29:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:29:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:41,564 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:29:41,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:41,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:41,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:41,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:41,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:29:41,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:41,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:29:41,757 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 08:29:41,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853560703] [2020-10-14 08:29:41,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:41,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:41,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25799921] [2020-10-14 08:29:41,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:41,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:41,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:41,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:41,763 INFO L87 Difference]: Start difference. First operand 4980 states and 7645 transitions. Second operand 4 states. [2020-10-14 08:29:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:29:47,170 INFO L93 Difference]: Finished difference Result 14781 states and 22659 transitions. [2020-10-14 08:29:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:29:47,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2020-10-14 08:29:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:29:47,209 INFO L225 Difference]: With dead ends: 14781 [2020-10-14 08:29:47,209 INFO L226 Difference]: Without dead ends: 9828 [2020-10-14 08:29:47,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9828 states. [2020-10-14 08:29:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9828 to 4991. [2020-10-14 08:29:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4991 states. [2020-10-14 08:29:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 7660 transitions. [2020-10-14 08:29:47,475 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 7660 transitions. Word has length 304 [2020-10-14 08:29:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:29:47,476 INFO L479 AbstractCegarLoop]: Abstraction has 4991 states and 7660 transitions. [2020-10-14 08:29:47,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:29:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 7660 transitions. [2020-10-14 08:29:47,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-14 08:29:47,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:29:47,489 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] [2020-10-14 08:29:47,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:29:47,490 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:29:47,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:29:47,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1988195410, now seen corresponding path program 1 times [2020-10-14 08:29:47,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:29:47,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73247125] [2020-10-14 08:29:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:29:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:51,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:52,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:52,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 08:29:52,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:29:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:29:52,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:52,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:29:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 08:29:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:29:52,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:29:53,120 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:29:53,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:29:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:29:53,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:29:53,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:29:53,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:29:53,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:29:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:29:53,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:29:53,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:29:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:29:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:29:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:29:53,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:29:53,216 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 08:29:53,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73247125] [2020-10-14 08:29:53,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:29:53,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:29:53,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775852451] [2020-10-14 08:29:53,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:29:53,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:29:53,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:29:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:29:53,219 INFO L87 Difference]: Start difference. First operand 4991 states and 7660 transitions. Second operand 4 states. [2020-10-14 08:30:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:02,986 INFO L93 Difference]: Finished difference Result 14878 states and 22826 transitions. [2020-10-14 08:30:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:02,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-10-14 08:30:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:03,024 INFO L225 Difference]: With dead ends: 14878 [2020-10-14 08:30:03,025 INFO L226 Difference]: Without dead ends: 9937 [2020-10-14 08:30:03,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9937 states. [2020-10-14 08:30:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9937 to 5007. [2020-10-14 08:30:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5007 states. [2020-10-14 08:30:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5007 states to 5007 states and 7679 transitions. [2020-10-14 08:30:03,376 INFO L78 Accepts]: Start accepts. Automaton has 5007 states and 7679 transitions. Word has length 305 [2020-10-14 08:30:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:03,377 INFO L479 AbstractCegarLoop]: Abstraction has 5007 states and 7679 transitions. [2020-10-14 08:30:03,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5007 states and 7679 transitions. [2020-10-14 08:30:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 08:30:03,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:03,390 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] [2020-10-14 08:30:03,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:30:03,390 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash -619824679, now seen corresponding path program 1 times [2020-10-14 08:30:03,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:03,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954995551] [2020-10-14 08:30:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:03,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:08,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:08,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 08:30:08,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:30:08,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:30:08,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:08,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:30:08,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 08:30:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:09,307 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:30:09,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:09,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:09,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:09,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:30:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:09,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:30:09,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954995551] [2020-10-14 08:30:09,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:09,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:09,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801127652] [2020-10-14 08:30:09,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:09,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:09,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:09,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:09,589 INFO L87 Difference]: Start difference. First operand 5007 states and 7679 transitions. Second operand 4 states. [2020-10-14 08:30:19,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:19,003 INFO L93 Difference]: Finished difference Result 14586 states and 22318 transitions. [2020-10-14 08:30:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:19,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-10-14 08:30:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:19,033 INFO L225 Difference]: With dead ends: 14586 [2020-10-14 08:30:19,033 INFO L226 Difference]: Without dead ends: 9776 [2020-10-14 08:30:19,047 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 [2020-10-14 08:30:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9776 states. [2020-10-14 08:30:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9776 to 9648. [2020-10-14 08:30:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9648 states. [2020-10-14 08:30:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9648 states to 9648 states and 14719 transitions. [2020-10-14 08:30:19,622 INFO L78 Accepts]: Start accepts. Automaton has 9648 states and 14719 transitions. Word has length 306 [2020-10-14 08:30:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:19,622 INFO L479 AbstractCegarLoop]: Abstraction has 9648 states and 14719 transitions. [2020-10-14 08:30:19,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9648 states and 14719 transitions. [2020-10-14 08:30:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 08:30:19,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:19,649 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] [2020-10-14 08:30:19,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:30:19,650 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:19,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1894748234, now seen corresponding path program 1 times [2020-10-14 08:30:19,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:19,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800222882] [2020-10-14 08:30:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:21,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:24,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 08:30:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:30:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 08:30:24,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:24,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:30:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:30:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 08:30:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:25,551 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:30:25,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:25,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:25,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:30:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:25,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:30:25,696 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 08:30:25,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800222882] [2020-10-14 08:30:25,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:25,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:30:25,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726821251] [2020-10-14 08:30:25,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:30:25,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:25,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:30:25,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:30:25,699 INFO L87 Difference]: Start difference. First operand 9648 states and 14719 transitions. Second operand 5 states. [2020-10-14 08:30:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:34,573 INFO L93 Difference]: Finished difference Result 19746 states and 29981 transitions. [2020-10-14 08:30:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:30:34,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-14 08:30:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:34,595 INFO L225 Difference]: With dead ends: 19746 [2020-10-14 08:30:34,595 INFO L226 Difference]: Without dead ends: 10508 [2020-10-14 08:30:34,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:30:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10508 states. [2020-10-14 08:30:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10508 to 9624. [2020-10-14 08:30:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9624 states. [2020-10-14 08:30:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9624 states to 9624 states and 14663 transitions. [2020-10-14 08:30:35,116 INFO L78 Accepts]: Start accepts. Automaton has 9624 states and 14663 transitions. Word has length 306 [2020-10-14 08:30:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:35,117 INFO L479 AbstractCegarLoop]: Abstraction has 9624 states and 14663 transitions. [2020-10-14 08:30:35,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:30:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 9624 states and 14663 transitions. [2020-10-14 08:30:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-14 08:30:35,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:35,137 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] [2020-10-14 08:30:35,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:30:35,138 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:35,138 INFO L82 PathProgramCache]: Analyzing trace with hash 789271848, now seen corresponding path program 1 times [2020-10-14 08:30:35,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:35,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278963583] [2020-10-14 08:30:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:36,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:37,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:37,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:40,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:40,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 08:30:40,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:30:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 08:30:40,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:40,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 08:30:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 08:30:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:40,847 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:30:40,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:40,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:40,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:40,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:30:40,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:40,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:40,962 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 08:30:40,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278963583] [2020-10-14 08:30:40,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:40,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:40,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421544528] [2020-10-14 08:30:40,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:40,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:40,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:40,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:40,965 INFO L87 Difference]: Start difference. First operand 9624 states and 14663 transitions. Second operand 4 states. [2020-10-14 08:30:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:46,721 INFO L93 Difference]: Finished difference Result 28060 states and 42570 transitions. [2020-10-14 08:30:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:46,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2020-10-14 08:30:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:46,755 INFO L225 Difference]: With dead ends: 28060 [2020-10-14 08:30:46,755 INFO L226 Difference]: Without dead ends: 18850 [2020-10-14 08:30:46,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18850 states. [2020-10-14 08:30:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18850 to 9664. [2020-10-14 08:30:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9664 states. [2020-10-14 08:30:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 14719 transitions. [2020-10-14 08:30:47,531 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 14719 transitions. Word has length 308 [2020-10-14 08:30:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:47,531 INFO L479 AbstractCegarLoop]: Abstraction has 9664 states and 14719 transitions. [2020-10-14 08:30:47,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 14719 transitions. [2020-10-14 08:30:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-14 08:30:47,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:47,548 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] [2020-10-14 08:30:47,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:30:47,549 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:47,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:47,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1181275513, now seen corresponding path program 1 times [2020-10-14 08:30:47,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:47,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351438571] [2020-10-14 08:30:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:30:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:47,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:52,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:52,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 08:30:52,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:30:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 08:30:52,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:52,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:30:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 08:30:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 08:30:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:30:53,331 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:30:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:30:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:30:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:30:53,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:30:53,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:30:53,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:30:53,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:30:53,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:30:53,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:30:53,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:30:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:30:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:30:53,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:30:53,407 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 08:30:53,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351438571] [2020-10-14 08:30:53,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:30:53,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:30:53,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904363699] [2020-10-14 08:30:53,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:30:53,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:30:53,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:30:53,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:53,410 INFO L87 Difference]: Start difference. First operand 9664 states and 14719 transitions. Second operand 4 states. [2020-10-14 08:30:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:30:59,246 INFO L93 Difference]: Finished difference Result 28140 states and 42689 transitions. [2020-10-14 08:30:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:30:59,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2020-10-14 08:30:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:30:59,267 INFO L225 Difference]: With dead ends: 28140 [2020-10-14 08:30:59,268 INFO L226 Difference]: Without dead ends: 18898 [2020-10-14 08:30:59,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:30:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18898 states. [2020-10-14 08:30:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18898 to 9716. [2020-10-14 08:30:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9716 states. [2020-10-14 08:30:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9716 states to 9716 states and 14791 transitions. [2020-10-14 08:30:59,846 INFO L78 Accepts]: Start accepts. Automaton has 9716 states and 14791 transitions. Word has length 309 [2020-10-14 08:30:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:30:59,847 INFO L479 AbstractCegarLoop]: Abstraction has 9716 states and 14791 transitions. [2020-10-14 08:30:59,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:30:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9716 states and 14791 transitions. [2020-10-14 08:30:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 08:30:59,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:30:59,860 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] [2020-10-14 08:30:59,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:30:59,861 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:30:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:30:59,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1381782757, now seen corresponding path program 1 times [2020-10-14 08:30:59,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:30:59,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272512767] [2020-10-14 08:30:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:05,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 08:31:05,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:31:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:31:05,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:05,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:31:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:31:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 08:31:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:05,741 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:31:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:05,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:31:05,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:05,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:05,900 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 08:31:05,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272512767] [2020-10-14 08:31:05,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:05,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:31:05,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653499546] [2020-10-14 08:31:05,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:31:05,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:05,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:31:05,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:31:05,902 INFO L87 Difference]: Start difference. First operand 9716 states and 14791 transitions. Second operand 5 states. [2020-10-14 08:31:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:16,585 INFO L93 Difference]: Finished difference Result 28255 states and 42889 transitions. [2020-10-14 08:31:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:31:16,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-14 08:31:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:16,608 INFO L225 Difference]: With dead ends: 28255 [2020-10-14 08:31:16,608 INFO L226 Difference]: Without dead ends: 18813 [2020-10-14 08:31:16,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:31:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2020-10-14 08:31:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18627. [2020-10-14 08:31:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18627 states. [2020-10-14 08:31:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18627 states to 18627 states and 28153 transitions. [2020-10-14 08:31:17,658 INFO L78 Accepts]: Start accepts. Automaton has 18627 states and 28153 transitions. Word has length 310 [2020-10-14 08:31:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:17,659 INFO L479 AbstractCegarLoop]: Abstraction has 18627 states and 28153 transitions. [2020-10-14 08:31:17,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:31:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 18627 states and 28153 transitions. [2020-10-14 08:31:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 08:31:17,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:17,678 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] [2020-10-14 08:31:17,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:31:17,679 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1685158698, now seen corresponding path program 1 times [2020-10-14 08:31:17,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:17,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921184814] [2020-10-14 08:31:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 08:31:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:23,368 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:31:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:31:23,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:23,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:23,587 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 08:31:23,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921184814] [2020-10-14 08:31:23,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:23,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:31:23,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723240917] [2020-10-14 08:31:23,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:31:23,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:23,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:31:23,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:23,589 INFO L87 Difference]: Start difference. First operand 18627 states and 28153 transitions. Second operand 4 states. [2020-10-14 08:31:35,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:35,392 INFO L93 Difference]: Finished difference Result 54843 states and 82736 transitions. [2020-10-14 08:31:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:31:35,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2020-10-14 08:31:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:35,443 INFO L225 Difference]: With dead ends: 54843 [2020-10-14 08:31:35,443 INFO L226 Difference]: Without dead ends: 36631 [2020-10-14 08:31:35,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:31:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36631 states. [2020-10-14 08:31:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36631 to 36445. [2020-10-14 08:31:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36445 states. [2020-10-14 08:31:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36445 states to 36445 states and 54749 transitions. [2020-10-14 08:31:37,527 INFO L78 Accepts]: Start accepts. Automaton has 36445 states and 54749 transitions. Word has length 312 [2020-10-14 08:31:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:31:37,527 INFO L479 AbstractCegarLoop]: Abstraction has 36445 states and 54749 transitions. [2020-10-14 08:31:37,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:31:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 36445 states and 54749 transitions. [2020-10-14 08:31:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 08:31:38,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:31:38,654 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] [2020-10-14 08:31:38,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:31:38,655 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:31:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:31:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1637783449, now seen corresponding path program 1 times [2020-10-14 08:31:38,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:31:38,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381160135] [2020-10-14 08:31:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:31:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:39,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:41,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:43,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:43,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 08:31:43,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:31:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 08:31:43,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:43,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:31:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:31:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 08:31:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:31:44,451 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:31:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:31:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:31:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:31:44,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:31:44,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:31:44,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:31:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:31:44,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:31:44,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:31:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:31:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:31:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:31:44,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:31:44,591 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 08:31:44,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381160135] [2020-10-14 08:31:44,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:31:44,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:31:44,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519580482] [2020-10-14 08:31:44,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:31:44,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:31:44,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:31:44,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:31:44,593 INFO L87 Difference]: Start difference. First operand 36445 states and 54749 transitions. Second operand 5 states. [2020-10-14 08:31:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:31:57,646 INFO L93 Difference]: Finished difference Result 107232 states and 160717 transitions. [2020-10-14 08:31:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:31:57,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-14 08:31:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:31:57,715 INFO L225 Difference]: With dead ends: 107232 [2020-10-14 08:31:57,715 INFO L226 Difference]: Without dead ends: 70862 [2020-10-14 08:31:57,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:31:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70862 states. [2020-10-14 08:32:02,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70862 to 70762. [2020-10-14 08:32:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70762 states. [2020-10-14 08:32:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70762 states to 70762 states and 105183 transitions. [2020-10-14 08:32:02,809 INFO L78 Accepts]: Start accepts. Automaton has 70762 states and 105183 transitions. Word has length 312 [2020-10-14 08:32:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:32:02,809 INFO L479 AbstractCegarLoop]: Abstraction has 70762 states and 105183 transitions. [2020-10-14 08:32:02,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:32:02,809 INFO L276 IsEmpty]: Start isEmpty. Operand 70762 states and 105183 transitions. [2020-10-14 08:32:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 08:32:02,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:32:02,878 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] [2020-10-14 08:32:02,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:32:02,879 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:32:02,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:32:02,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1379704840, now seen corresponding path program 1 times [2020-10-14 08:32:02,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:32:02,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37388452] [2020-10-14 08:32:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:32:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:03,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:08,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:08,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 08:32:08,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:32:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 08:32:08,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:08,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:32:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:32:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 08:32:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:08,640 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 08:32:08,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:32:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:32:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:32:08,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:32:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:32:08,763 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 08:32:08,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37388452] [2020-10-14 08:32:08,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:32:08,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:32:08,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95481154] [2020-10-14 08:32:08,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:32:08,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:32:08,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:32:08,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:32:08,765 INFO L87 Difference]: Start difference. First operand 70762 states and 105183 transitions. Second operand 5 states. [2020-10-14 08:32:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:32:22,601 INFO L93 Difference]: Finished difference Result 147041 states and 218573 transitions. [2020-10-14 08:32:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:32:22,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-14 08:32:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:32:22,678 INFO L225 Difference]: With dead ends: 147041 [2020-10-14 08:32:22,678 INFO L226 Difference]: Without dead ends: 76517 [2020-10-14 08:32:22,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:32:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76517 states.