/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/eca-rers2012/Problem05_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:59:48,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:59:48,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:59:48,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:59:48,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:59:48,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:59:48,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:59:48,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:59:48,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:59:48,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:59:48,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:59:48,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:59:48,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:59:48,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:59:48,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:59:48,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:59:48,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:59:48,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:59:48,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:59:48,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:59:48,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:59:48,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:59:48,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:59:48,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:59:48,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:59:48,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:59:48,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:59:48,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:59:48,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:59:48,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:59:48,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:59:48,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:59:48,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:59:48,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:59:48,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:59:48,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:59:48,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:59:48,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:59:48,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:59:48,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:59:48,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:59:48,175 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 11:59:48,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:59:48,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:59:48,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:59:48,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:59:48,227 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:59:48,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:59:48,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:59:48,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:59:48,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:59:48,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:59:48,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:59:48,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:59:48,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:59:48,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:59:48,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:59:48,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:59:48,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:59:48,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:59:48,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:59:48,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:59:48,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:59:48,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:59:48,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:59:48,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:59:48,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:59:48,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:59:48,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:59:48,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:59:48,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:59:48,234 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 11:59:48,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:59:48,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:59:48,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:59:48,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:59:48,557 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:59:48,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label49.c [2020-10-12 11:59:48,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc832c927/581bfbbce1384012bfdd0255b0cb9282/FLAG2e0575181 [2020-10-12 11:59:49,536 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:59:49,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label49.c [2020-10-12 11:59:49,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc832c927/581bfbbce1384012bfdd0255b0cb9282/FLAG2e0575181 [2020-10-12 11:59:49,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc832c927/581bfbbce1384012bfdd0255b0cb9282 [2020-10-12 11:59:49,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:59:49,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:59:49,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:59:49,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:59:49,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:59:49,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:49" (1/1) ... [2020-10-12 11:59:49,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:49, skipping insertion in model container [2020-10-12 11:59:49,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:49" (1/1) ... [2020-10-12 11:59:49,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:59:50,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:59:52,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:59:52,777 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:59:53,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:59:53,997 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:59:53,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53 WrapperNode [2020-10-12 11:59:53,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:59:53,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:59:53,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:59:53,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:59:54,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ... [2020-10-12 11:59:54,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ... [2020-10-12 11:59:54,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ... [2020-10-12 11:59:54,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ... [2020-10-12 11:59:54,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ... [2020-10-12 11:59:54,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ... [2020-10-12 11:59:54,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (1/1) ... [2020-10-12 11:59:54,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:59:54,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:59:54,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:59:54,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:59:54,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (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 11:59:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:59:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:59:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:59:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:59:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:59:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:59:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:59:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:59:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:59:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:59:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:59:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:59:54,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:59:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:59:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:59:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:59:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:59:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:59:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:59:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:59:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:59:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:59:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:59:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:59:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:00:02,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:00:02,927 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:00:02,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:00:02 BoogieIcfgContainer [2020-10-12 12:00:02,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:00:02,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:00:02,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:00:02,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:00:02,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:49" (1/3) ... [2020-10-12 12:00:02,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3fe2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:00:02, skipping insertion in model container [2020-10-12 12:00:02,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:53" (2/3) ... [2020-10-12 12:00:02,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3fe2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:00:02, skipping insertion in model container [2020-10-12 12:00:02,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:00:02" (3/3) ... [2020-10-12 12:00:02,960 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label49.c [2020-10-12 12:00:03,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:00:03,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:00:03,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:00:03,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:00:03,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:00:03,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:00:03,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:00:03,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:00:03,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:00:03,095 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:00:03,095 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:00:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 12:00:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1698 [2020-10-12 12:00:03,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:00:03,250 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:03,251 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:00:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:00:03,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2053076408, now seen corresponding path program 1 times [2020-10-12 12:00:03,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:00:03,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578272785] [2020-10-12 12:00:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:00:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:04,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:09,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1719 [2020-10-12 12:00:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 12:00:09,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 12:00:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:00:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1713 [2020-10-12 12:00:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 12:00:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:00:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:10,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:10,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:00:10,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:00:10,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:00:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:00:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:00:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:13,372 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 12:00:13,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578272785] [2020-10-12 12:00:13,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:00:13,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 12:00:13,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688614791] [2020-10-12 12:00:13,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 12:00:13,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:00:13,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 12:00:13,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 12:00:13,397 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-12 12:00:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:00:29,933 INFO L93 Difference]: Finished difference Result 6330 states and 11884 transitions. [2020-10-12 12:00:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:00:29,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1697 [2020-10-12 12:00:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:00:29,992 INFO L225 Difference]: With dead ends: 6330 [2020-10-12 12:00:29,992 INFO L226 Difference]: Without dead ends: 4044 [2020-10-12 12:00:30,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:00:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-10-12 12:00:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3999. [2020-10-12 12:00:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3999 states. [2020-10-12 12:00:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 6914 transitions. [2020-10-12 12:00:30,238 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 6914 transitions. Word has length 1697 [2020-10-12 12:00:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:00:30,243 INFO L479 AbstractCegarLoop]: Abstraction has 3999 states and 6914 transitions. [2020-10-12 12:00:30,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 12:00:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 6914 transitions. [2020-10-12 12:00:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2020-10-12 12:00:30,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:00:30,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:30,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:00:30,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:00:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:00:30,387 INFO L82 PathProgramCache]: Analyzing trace with hash -159553629, now seen corresponding path program 1 times [2020-10-12 12:00:30,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:00:30,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050992674] [2020-10-12 12:00:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:00:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:35,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:35,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-12 12:00:35,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:00:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-12 12:00:35,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 12:00:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 12:00:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1710 [2020-10-12 12:00:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 12:00:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:00:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:37,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:37,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:00:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:00:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:00:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:00:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:00:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:37,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:00:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:00:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:00:37,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:00:37,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:00:37,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:00:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:00:37,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:00:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:00:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:00:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 12:00:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:00:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:00:39,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050992674] [2020-10-12 12:00:39,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:00:39,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:00:39,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629231024] [2020-10-12 12:00:39,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:00:39,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:00:39,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:00:39,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:00:39,552 INFO L87 Difference]: Start difference. First operand 3999 states and 6914 transitions. Second operand 5 states. [2020-10-12 12:00:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:00:59,610 INFO L93 Difference]: Finished difference Result 11645 states and 20382 transitions. [2020-10-12 12:00:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:00:59,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1706 [2020-10-12 12:00:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:00:59,655 INFO L225 Difference]: With dead ends: 11645 [2020-10-12 12:00:59,656 INFO L226 Difference]: Without dead ends: 7652 [2020-10-12 12:00:59,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:00:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7652 states. [2020-10-12 12:00:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7652 to 7579. [2020-10-12 12:00:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7579 states. [2020-10-12 12:00:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7579 states to 7579 states and 11625 transitions. [2020-10-12 12:00:59,889 INFO L78 Accepts]: Start accepts. Automaton has 7579 states and 11625 transitions. Word has length 1706 [2020-10-12 12:00:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:00:59,893 INFO L479 AbstractCegarLoop]: Abstraction has 7579 states and 11625 transitions. [2020-10-12 12:00:59,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:00:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7579 states and 11625 transitions. [2020-10-12 12:01:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-12 12:01:00,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:01:00,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:00,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:01:00,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:01:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:01:00,025 INFO L82 PathProgramCache]: Analyzing trace with hash -896424936, now seen corresponding path program 1 times [2020-10-12 12:01:00,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:01:00,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30268896] [2020-10-12 12:01:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:01:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:01:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:01:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-12 12:01:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:01:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-12 12:01:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:01:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 12:01:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 12:01:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1710 [2020-10-12 12:01:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:01:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:01:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:01:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:07,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:01:07,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:01:07,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:01:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 12:01:07,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:01:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:01:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:01:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:01:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:01:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:01:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:01:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:07,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:01:07,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 12:01:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:01:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:01:07,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:01:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:01:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:01:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 12:01:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:01:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:01:09,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30268896] [2020-10-12 12:01:09,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:01:09,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:01:09,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753954849] [2020-10-12 12:01:09,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:01:09,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:01:09,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:01:09,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:01:09,966 INFO L87 Difference]: Start difference. First operand 7579 states and 11625 transitions. Second operand 5 states. [2020-10-12 12:01:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:01:30,439 INFO L93 Difference]: Finished difference Result 22225 states and 34573 transitions. [2020-10-12 12:01:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:01:30,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1707 [2020-10-12 12:01:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:01:30,508 INFO L225 Difference]: With dead ends: 22225 [2020-10-12 12:01:30,508 INFO L226 Difference]: Without dead ends: 14652 [2020-10-12 12:01:30,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:01:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2020-10-12 12:01:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 14642. [2020-10-12 12:01:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14642 states. [2020-10-12 12:01:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14642 states to 14642 states and 20278 transitions. [2020-10-12 12:01:30,885 INFO L78 Accepts]: Start accepts. Automaton has 14642 states and 20278 transitions. Word has length 1707 [2020-10-12 12:01:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:01:30,888 INFO L479 AbstractCegarLoop]: Abstraction has 14642 states and 20278 transitions. [2020-10-12 12:01:30,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:01:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 14642 states and 20278 transitions. [2020-10-12 12:01:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2020-10-12 12:01:30,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:01:30,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:30,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:01:30,968 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:01:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:01:30,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1964794134, now seen corresponding path program 1 times [2020-10-12 12:01:30,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:01:30,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770973640] [2020-10-12 12:01:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:01:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:01:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:36,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:01:36,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-12 12:01:36,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:01:36,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-12 12:01:36,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:01:36,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 12:01:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 12:01:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-12 12:01:36,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:01:39,990 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-12 12:01:40,104 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-12 12:01:40,225 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-12 12:01:41,431 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-12 12:01:41,624 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-12 12:01:41,843 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36 [2020-10-12 12:01:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:01:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:01:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:01:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:01:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:01:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 12:01:41,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:01:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:01:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:01:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:01:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:01:41,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:01:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:01:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:41,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:01:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 12:01:41,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:01:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 12:01:41,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:01:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:01:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:01:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:01:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:01:41,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 12:01:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:01:41,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:01:41,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:01:41,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 12:01:41,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:01:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 12:01:41,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:01:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:01:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:01:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:01:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:02:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 12:02:01,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770973640] [2020-10-12 12:02:01,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:02:01,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 12:02:01,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464360479] [2020-10-12 12:02:01,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 12:02:01,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:02:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 12:02:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-12 12:02:01,494 INFO L87 Difference]: Start difference. First operand 14642 states and 20278 transitions. Second operand 23 states. [2020-10-12 12:02:02,353 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-12 12:02:03,572 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-12 12:02:28,836 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 12:02:37,767 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 12:02:42,332 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-12 12:02:47,437 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 12:02:49,161 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-12 12:03:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:03:03,707 INFO L93 Difference]: Finished difference Result 30571 states and 43216 transitions. [2020-10-12 12:03:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 12:03:03,709 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1722 [2020-10-12 12:03:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:03:03,754 INFO L225 Difference]: With dead ends: 30571 [2020-10-12 12:03:03,755 INFO L226 Difference]: Without dead ends: 15935 [2020-10-12 12:03:03,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 12:03:03,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15935 states. [2020-10-12 12:03:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15935 to 15930. [2020-10-12 12:03:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15930 states. [2020-10-12 12:03:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15930 states to 15930 states and 21605 transitions. [2020-10-12 12:03:04,085 INFO L78 Accepts]: Start accepts. Automaton has 15930 states and 21605 transitions. Word has length 1722 [2020-10-12 12:03:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:03:04,087 INFO L479 AbstractCegarLoop]: Abstraction has 15930 states and 21605 transitions. [2020-10-12 12:03:04,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 12:03:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand 15930 states and 21605 transitions. [2020-10-12 12:03:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1725 [2020-10-12 12:03:04,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:03:04,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:04,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:03:04,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:03:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:03:04,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1054429966, now seen corresponding path program 1 times [2020-10-12 12:03:04,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:03:04,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070007067] [2020-10-12 12:03:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:03:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:03:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:09,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1244 [2020-10-12 12:03:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:03:11,075 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-12 12:03:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:03:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:03:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:12,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:03:12,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:03:12,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:03:12,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 12:03:12,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:03:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:03:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:03:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:03:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:03:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:03:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:03:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:03:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 12:03:12,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:03:12,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 12:03:12,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:03:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:03:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:03:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 12:03:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:03:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:03:26,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070007067] [2020-10-12 12:03:26,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:03:26,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 12:03:26,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027365812] [2020-10-12 12:03:26,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 12:03:26,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:03:26,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 12:03:26,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-12 12:03:26,715 INFO L87 Difference]: Start difference. First operand 15930 states and 21605 transitions. Second operand 23 states.