/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=BIGGEST --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_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:33:04,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:33:04,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:33:04,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:33:04,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:33:04,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:33:04,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:33:04,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:33:04,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:33:04,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:33:04,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:33:04,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:33:04,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:33:04,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:33:04,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:33:04,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:33:04,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:33:04,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:33:04,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:33:04,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:33:04,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:33:04,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:33:04,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:33:04,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:33:04,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:33:04,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:33:04,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:33:04,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:33:04,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:33:04,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:33:04,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:33:04,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:33:04,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:33:04,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:33:04,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:33:04,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:33:04,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:33:04,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:33:04,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:33:04,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:33:04,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:33:04,288 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 [2020-10-12 19:33:04,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:33:04,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:33:04,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:33:04,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:33:04,338 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:33:04,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:33:04,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:33:04,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:33:04,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:33:04,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:33:04,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:33:04,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:33:04,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:33:04,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:33:04,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:33:04,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:33:04,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:33:04,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:33:04,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:33:04,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:33:04,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:33:04,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:33:04,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:33:04,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:33:04,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:33:04,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:33:04,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:33:04,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:33:04,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:33:04,345 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:33:04,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:33:04,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:33:04,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:33:04,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:33:04,680 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:33:04,681 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:33:04,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ced8ecc8/5c8b98dfe5194e6fabb32b6e62d617a2/FLAGe41da0905 [2020-10-12 19:33:05,320 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:33:05,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:33:05,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ced8ecc8/5c8b98dfe5194e6fabb32b6e62d617a2/FLAGe41da0905 [2020-10-12 19:33:05,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ced8ecc8/5c8b98dfe5194e6fabb32b6e62d617a2 [2020-10-12 19:33:05,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:33:05,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:33:05,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:33:05,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:33:05,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:33:05,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:33:05" (1/1) ... [2020-10-12 19:33:05,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b4cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:05, skipping insertion in model container [2020-10-12 19:33:05,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:33:05" (1/1) ... [2020-10-12 19:33:05,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:33:05,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:33:06,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:33:06,370 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:33:06,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:33:06,885 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:33:06,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06 WrapperNode [2020-10-12 19:33:06,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:33:06,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:33:06,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:33:06,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:33:06,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (1/1) ... [2020-10-12 19:33:06,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (1/1) ... [2020-10-12 19:33:06,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (1/1) ... [2020-10-12 19:33:06,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (1/1) ... [2020-10-12 19:33:06,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (1/1) ... [2020-10-12 19:33:07,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (1/1) ... [2020-10-12 19:33:07,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (1/1) ... [2020-10-12 19:33:07,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:33:07,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:33:07,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:33:07,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:33:07,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (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 [2020-10-12 19:33:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:33:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:33:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:33:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:33:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:33:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:33:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:33:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:33:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:33:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:33:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:33:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:33:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:33:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:33:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:33:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:33:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:33:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:33:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:33:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:33:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:33:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:33:09,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:33:09,130 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:33:09,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:33:09 BoogieIcfgContainer [2020-10-12 19:33:09,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:33:09,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:33:09,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:33:09,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:33:09,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:33:05" (1/3) ... [2020-10-12 19:33:09,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b8a6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:33:09, skipping insertion in model container [2020-10-12 19:33:09,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:06" (2/3) ... [2020-10-12 19:33:09,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b8a6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:33:09, skipping insertion in model container [2020-10-12 19:33:09,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:33:09" (3/3) ... [2020-10-12 19:33:09,158 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:33:09,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:33:09,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-12 19:33:09,199 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-12 19:33:09,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:33:09,234 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:33:09,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:33:09,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:33:09,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:33:09,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:33:09,235 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:33:09,235 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:33:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2020-10-12 19:33:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:33:09,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:09,286 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] [2020-10-12 19:33:09,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1666706590, now seen corresponding path program 1 times [2020-10-12 19:33:09,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:09,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254970736] [2020-10-12 19:33:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:11,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:14,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:14,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:33:14,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:33:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 19:33:14,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:33:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:33:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:33:15,686 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:33:15,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:15,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:15,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:15,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:15,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:33:15,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:15,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:15,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:33:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:15,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254970736] [2020-10-12 19:33:15,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:15,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:33:15,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637791917] [2020-10-12 19:33:15,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:33:15,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:15,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:33:15,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:33:15,815 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 12 states. [2020-10-12 19:33:15,985 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-12 19:33:16,719 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 239 [2020-10-12 19:33:17,720 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-12 19:33:25,140 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-12 19:33:26,711 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-12 19:33:26,901 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-12 19:33:28,216 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-12 19:33:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:28,466 INFO L93 Difference]: Finished difference Result 2955 states and 4760 transitions. [2020-10-12 19:33:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 19:33:28,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-12 19:33:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:28,530 INFO L225 Difference]: With dead ends: 2955 [2020-10-12 19:33:28,530 INFO L226 Difference]: Without dead ends: 2827 [2020-10-12 19:33:28,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=481, Invalid=1681, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 19:33:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-10-12 19:33:28,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 536. [2020-10-12 19:33:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-12 19:33:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 669 transitions. [2020-10-12 19:33:28,654 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 669 transitions. Word has length 63 [2020-10-12 19:33:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:28,655 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 669 transitions. [2020-10-12 19:33:28,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:33:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 669 transitions. [2020-10-12 19:33:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:33:28,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:28,663 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] [2020-10-12 19:33:28,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:33:28,664 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1660141307, now seen corresponding path program 1 times [2020-10-12 19:33:28,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:28,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778656301] [2020-10-12 19:33:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:33,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:33,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:33:33,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:33:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:33:33,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:33:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:33:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:33:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:34,145 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:33:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:34,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:34,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:33:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:33:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:33:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:34,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778656301] [2020-10-12 19:33:34,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:34,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:33:34,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409305099] [2020-10-12 19:33:34,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:33:34,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:34,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:33:34,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:33:34,214 INFO L87 Difference]: Start difference. First operand 536 states and 669 transitions. Second operand 11 states. [2020-10-12 19:33:34,554 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-12 19:33:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:37,338 INFO L93 Difference]: Finished difference Result 936 states and 1207 transitions. [2020-10-12 19:33:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:33:37,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-10-12 19:33:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:37,349 INFO L225 Difference]: With dead ends: 936 [2020-10-12 19:33:37,349 INFO L226 Difference]: Without dead ends: 658 [2020-10-12 19:33:37,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:33:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-12 19:33:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 480. [2020-10-12 19:33:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-12 19:33:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 620 transitions. [2020-10-12 19:33:37,396 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 620 transitions. Word has length 63 [2020-10-12 19:33:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:37,396 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 620 transitions. [2020-10-12 19:33:37,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:33:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 620 transitions. [2020-10-12 19:33:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 19:33:37,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:37,399 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] [2020-10-12 19:33:37,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:33:37,400 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:37,400 INFO L82 PathProgramCache]: Analyzing trace with hash 478280318, now seen corresponding path program 1 times [2020-10-12 19:33:37,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:37,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110576424] [2020-10-12 19:33:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:37,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:40,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:42,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 19:33:42,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:33:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:33:42,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:33:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:33:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:33:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:43,105 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:33:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:43,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:43,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:43,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:43,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 19:33:43,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:33:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:33:43,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:43,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110576424] [2020-10-12 19:33:43,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:43,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:33:43,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239566742] [2020-10-12 19:33:43,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:33:43,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:43,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:33:43,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:33:43,199 INFO L87 Difference]: Start difference. First operand 480 states and 620 transitions. Second operand 15 states. [2020-10-12 19:33:44,016 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 229 [2020-10-12 19:33:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:47,363 INFO L93 Difference]: Finished difference Result 1060 states and 1376 transitions. [2020-10-12 19:33:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:33:47,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-12 19:33:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:47,368 INFO L225 Difference]: With dead ends: 1060 [2020-10-12 19:33:47,368 INFO L226 Difference]: Without dead ends: 787 [2020-10-12 19:33:47,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:33:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-12 19:33:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 586. [2020-10-12 19:33:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-12 19:33:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 800 transitions. [2020-10-12 19:33:47,435 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 800 transitions. Word has length 63 [2020-10-12 19:33:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:47,435 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 800 transitions. [2020-10-12 19:33:47,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:33:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 800 transitions. [2020-10-12 19:33:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:33:47,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:47,437 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] [2020-10-12 19:33:47,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:33:47,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash 53953382, now seen corresponding path program 1 times [2020-10-12 19:33:47,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:47,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688887138] [2020-10-12 19:33:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:33:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:33:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:33:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:33:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:33:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:53,179 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:33:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:53,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:53,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:53,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:33:53,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:53,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688887138] [2020-10-12 19:33:53,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:53,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:33:53,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107949405] [2020-10-12 19:33:53,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:33:53,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:53,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:33:53,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:33:53,235 INFO L87 Difference]: Start difference. First operand 586 states and 800 transitions. Second operand 14 states. [2020-10-12 19:33:53,389 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-12 19:33:54,262 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 236 [2020-10-12 19:33:54,996 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-12 19:33:59,330 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 19:33:59,514 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-12 19:33:59,833 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-12 19:34:00,067 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-12 19:34:00,579 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 19:34:00,851 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-12 19:34:02,286 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-12 19:34:02,511 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-12 19:34:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:02,611 INFO L93 Difference]: Finished difference Result 2928 states and 4246 transitions. [2020-10-12 19:34:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 19:34:02,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-12 19:34:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:02,627 INFO L225 Difference]: With dead ends: 2928 [2020-10-12 19:34:02,627 INFO L226 Difference]: Without dead ends: 2713 [2020-10-12 19:34:02,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=443, Invalid=1909, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 19:34:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2020-10-12 19:34:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 1053. [2020-10-12 19:34:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-10-12 19:34:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1505 transitions. [2020-10-12 19:34:02,861 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1505 transitions. Word has length 64 [2020-10-12 19:34:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:02,861 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1505 transitions. [2020-10-12 19:34:02,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:34:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1505 transitions. [2020-10-12 19:34:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:02,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:02,865 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] [2020-10-12 19:34:02,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:34:02,865 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:02,866 INFO L82 PathProgramCache]: Analyzing trace with hash -344861698, now seen corresponding path program 1 times [2020-10-12 19:34:02,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:02,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629604595] [2020-10-12 19:34:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:03,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:06,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:07,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:07,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:34:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:34:07,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:34:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:34:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:08,356 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-10-12 19:34:09,165 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:34:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:09,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:09,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:09,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:34:09,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:09,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629604595] [2020-10-12 19:34:09,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:09,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:34:09,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823329612] [2020-10-12 19:34:09,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:34:09,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:09,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:34:09,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:34:09,229 INFO L87 Difference]: Start difference. First operand 1053 states and 1505 transitions. Second operand 14 states. [2020-10-12 19:34:09,357 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-12 19:34:10,167 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 225 [2020-10-12 19:34:10,630 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-12 19:34:10,985 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-12 19:34:11,314 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-12 19:34:11,569 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-12 19:34:11,755 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-12 19:34:14,106 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-12 19:34:15,072 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-12 19:34:15,206 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-12 19:34:15,331 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-12 19:34:15,512 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-12 19:34:15,747 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-12 19:34:16,425 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-12 19:34:17,792 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-12 19:34:18,079 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 19:34:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:18,217 INFO L93 Difference]: Finished difference Result 3757 states and 5485 transitions. [2020-10-12 19:34:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 19:34:18,217 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-12 19:34:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:18,231 INFO L225 Difference]: With dead ends: 3757 [2020-10-12 19:34:18,231 INFO L226 Difference]: Without dead ends: 3324 [2020-10-12 19:34:18,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=448, Invalid=1904, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 19:34:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2020-10-12 19:34:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 1259. [2020-10-12 19:34:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-10-12 19:34:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1812 transitions. [2020-10-12 19:34:18,488 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1812 transitions. Word has length 64 [2020-10-12 19:34:18,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:18,490 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1812 transitions. [2020-10-12 19:34:18,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:34:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1812 transitions. [2020-10-12 19:34:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:18,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:18,492 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] [2020-10-12 19:34:18,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:34:18,493 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:18,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:18,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1824256589, now seen corresponding path program 1 times [2020-10-12 19:34:18,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:18,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399548064] [2020-10-12 19:34:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:19,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:23,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:23,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:23,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:34:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:34:23,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:34:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:34:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:23,824 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-12 19:34:24,002 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-12 19:34:24,137 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-12 19:34:24,252 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-10-12 19:34:24,768 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:34:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:24,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:24,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:24,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:34:24,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:24,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399548064] [2020-10-12 19:34:24,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:24,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:34:24,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270987219] [2020-10-12 19:34:24,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:34:24,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:24,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:34:24,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:34:24,833 INFO L87 Difference]: Start difference. First operand 1259 states and 1812 transitions. Second operand 13 states. [2020-10-12 19:34:25,425 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-12 19:34:26,072 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-12 19:34:26,419 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-12 19:34:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:29,011 INFO L93 Difference]: Finished difference Result 2007 states and 2930 transitions. [2020-10-12 19:34:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:34:29,012 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-12 19:34:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:29,016 INFO L225 Difference]: With dead ends: 2007 [2020-10-12 19:34:29,017 INFO L226 Difference]: Without dead ends: 1318 [2020-10-12 19:34:29,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:34:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-12 19:34:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1225. [2020-10-12 19:34:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-10-12 19:34:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1757 transitions. [2020-10-12 19:34:29,371 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1757 transitions. Word has length 64 [2020-10-12 19:34:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:29,372 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1757 transitions. [2020-10-12 19:34:29,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:34:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1757 transitions. [2020-10-12 19:34:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:29,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:29,374 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] [2020-10-12 19:34:29,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:34:29,374 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:29,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1656486796, now seen corresponding path program 1 times [2020-10-12 19:34:29,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:29,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338231153] [2020-10-12 19:34:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:29,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:34,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:34,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:34:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:34:34,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:34:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:34:34,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:34,982 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:34:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:34,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:34,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:34,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:34,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:34:34,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:34,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:34,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:34,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:35,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338231153] [2020-10-12 19:34:35,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:35,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:34:35,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583059708] [2020-10-12 19:34:35,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:34:35,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:34:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:34:35,018 INFO L87 Difference]: Start difference. First operand 1225 states and 1757 transitions. Second operand 14 states. [2020-10-12 19:34:35,442 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-12 19:34:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:39,684 INFO L93 Difference]: Finished difference Result 3261 states and 4763 transitions. [2020-10-12 19:34:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:34:39,685 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-12 19:34:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:39,698 INFO L225 Difference]: With dead ends: 3261 [2020-10-12 19:34:39,699 INFO L226 Difference]: Without dead ends: 3244 [2020-10-12 19:34:39,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:34:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2020-10-12 19:34:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1227. [2020-10-12 19:34:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-10-12 19:34:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1759 transitions. [2020-10-12 19:34:40,058 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1759 transitions. Word has length 64 [2020-10-12 19:34:40,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:40,059 INFO L479 AbstractCegarLoop]: Abstraction has 1227 states and 1759 transitions. [2020-10-12 19:34:40,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:34:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1759 transitions. [2020-10-12 19:34:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:40,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:40,062 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] [2020-10-12 19:34:40,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:34:40,062 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:40,063 INFO L82 PathProgramCache]: Analyzing trace with hash 668775028, now seen corresponding path program 1 times [2020-10-12 19:34:40,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:40,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321946183] [2020-10-12 19:34:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:41,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:44,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:45,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:34:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:34:45,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:34:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:34:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:12,175 WARN L193 SmtUtils]: Spent 24.15 s on a formula simplification. DAG size of input: 1582 DAG size of output: 1571 [2020-10-12 19:35:12,931 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:35:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:12,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:12,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:35:12,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:12,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:35:13,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321946183] [2020-10-12 19:35:13,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:13,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:35:13,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639073858] [2020-10-12 19:35:13,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 19:35:13,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:13,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 19:35:13,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:35:13,098 INFO L87 Difference]: Start difference. First operand 1227 states and 1759 transitions. Second operand 18 states. [2020-10-12 19:35:13,676 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-12 19:35:14,498 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-12 19:35:28,826 WARN L193 SmtUtils]: Spent 13.69 s on a formula simplification. DAG size of input: 1611 DAG size of output: 826 [2020-10-12 19:35:42,825 WARN L193 SmtUtils]: Spent 13.66 s on a formula simplification. DAG size of input: 1617 DAG size of output: 832 [2020-10-12 19:36:05,774 WARN L193 SmtUtils]: Spent 18.94 s on a formula simplification. DAG size of input: 1621 DAG size of output: 836 [2020-10-12 19:36:35,348 WARN L193 SmtUtils]: Spent 27.41 s on a formula simplification. DAG size of input: 1624 DAG size of output: 1623 [2020-10-12 19:36:50,235 WARN L193 SmtUtils]: Spent 13.04 s on a formula simplification that was a NOOP. DAG size: 1582 [2020-10-12 19:36:50,955 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41