/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/systemc/mem_slave_tlm.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:00:48,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:00:48,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:00:48,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:00:48,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:00:48,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:00:48,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:00:48,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:00:48,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:00:48,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:00:48,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:00:48,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:00:48,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:00:48,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:00:48,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:00:48,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:00:48,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:00:48,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:00:48,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:00:48,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:00:48,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:00:48,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:00:48,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:00:48,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:00:48,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:00:48,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:00:48,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:00:48,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:00:48,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:00:48,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:00:48,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:00:48,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:00:48,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:00:48,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:00:48,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:00:48,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:00:48,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:00:48,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:00:48,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:00:48,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:00:48,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:00:48,197 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 21:00:48,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:00:48,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:00:48,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:00:48,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:00:48,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:00:48,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:00:48,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:00:48,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:00:48,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:00:48,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:00:48,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:00:48,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:00:48,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:00:48,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:00:48,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:00:48,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:00:48,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:00:48,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:00:48,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:00:48,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:00:48,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:00:48,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:00:48,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:00:48,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:00:48,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:00:48,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:00:48,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:00:48,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:00:48,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:00:48,247 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 21:00:48,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:00:48,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:00:48,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:00:48,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:00:48,590 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:00:48,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2020-10-12 21:00:48,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bee2d57/d1cb47189d3542cea78b44e6f16fafec/FLAGb3f09044d [2020-10-12 21:00:49,264 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:00:49,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2020-10-12 21:00:49,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bee2d57/d1cb47189d3542cea78b44e6f16fafec/FLAGb3f09044d [2020-10-12 21:00:49,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bee2d57/d1cb47189d3542cea78b44e6f16fafec [2020-10-12 21:00:49,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:00:49,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:00:49,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:49,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:00:49,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:00:49,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:49" (1/1) ... [2020-10-12 21:00:49,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c6f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:49, skipping insertion in model container [2020-10-12 21:00:49,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:00:49" (1/1) ... [2020-10-12 21:00:49,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:00:49,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:00:49,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:49,919 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:00:50,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:00:50,124 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:00:50,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50 WrapperNode [2020-10-12 21:00:50,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:00:50,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:00:50,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:00:50,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:00:50,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (1/1) ... [2020-10-12 21:00:50,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (1/1) ... [2020-10-12 21:00:50,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (1/1) ... [2020-10-12 21:00:50,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (1/1) ... [2020-10-12 21:00:50,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (1/1) ... [2020-10-12 21:00:50,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (1/1) ... [2020-10-12 21:00:50,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (1/1) ... [2020-10-12 21:00:50,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:00:50,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:00:50,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:00:50,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:00:50,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (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 21:00:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:00:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:00:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-12 21:00:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-12 21:00:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-12 21:00:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-12 21:00:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-12 21:00:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-12 21:00:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-12 21:00:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:00:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:00:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:00:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-12 21:00:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-12 21:00:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-12 21:00:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-12 21:00:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-12 21:00:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-12 21:00:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-12 21:00:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:00:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:00:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:00:51,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:00:51,340 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-12 21:00:51,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:51 BoogieIcfgContainer [2020-10-12 21:00:51,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:00:51,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:00:51,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:00:51,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:00:51,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:00:49" (1/3) ... [2020-10-12 21:00:51,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6f252e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:51, skipping insertion in model container [2020-10-12 21:00:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:00:50" (2/3) ... [2020-10-12 21:00:51,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6f252e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:00:51, skipping insertion in model container [2020-10-12 21:00:51,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:00:51" (3/3) ... [2020-10-12 21:00:51,358 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.c [2020-10-12 21:00:51,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:00:51,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:00:51,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:00:51,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:00:51,462 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:00:51,462 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:00:51,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:00:51,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:00:51,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:00:51,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:00:51,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:00:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-12 21:00:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 21:00:51,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:51,529 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] [2020-10-12 21:00:51,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:51,537 INFO L82 PathProgramCache]: Analyzing trace with hash -546552828, now seen corresponding path program 1 times [2020-10-12 21:00:51,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:51,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15971430] [2020-10-12 21:00:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:53,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 21:00:56,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:00:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 21:00:56,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:56,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:00:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:00:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 21:00:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 21:00:57,227 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:00:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:00:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:57,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:00:57,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:00:57,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:00:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:00:57,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:00:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:00:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:00:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:00:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:00:57,258 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 21:00:57,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15971430] [2020-10-12 21:00:57,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:00:57,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 21:00:57,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486100902] [2020-10-12 21:00:57,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 21:00:57,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:00:57,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 21:00:57,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 21:00:57,286 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-10-12 21:00:57,503 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:00:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:00:59,679 INFO L93 Difference]: Finished difference Result 891 states and 1591 transitions. [2020-10-12 21:00:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:00:59,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 21:00:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:00:59,700 INFO L225 Difference]: With dead ends: 891 [2020-10-12 21:00:59,700 INFO L226 Difference]: Without dead ends: 584 [2020-10-12 21:00:59,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:00:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-10-12 21:00:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 510. [2020-10-12 21:00:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-12 21:00:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 787 transitions. [2020-10-12 21:00:59,822 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 787 transitions. Word has length 39 [2020-10-12 21:00:59,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:00:59,823 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 787 transitions. [2020-10-12 21:00:59,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 21:00:59,823 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 787 transitions. [2020-10-12 21:00:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 21:00:59,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:00:59,829 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] [2020-10-12 21:00:59,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:00:59,829 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:00:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:00:59,830 INFO L82 PathProgramCache]: Analyzing trace with hash -93621791, now seen corresponding path program 1 times [2020-10-12 21:00:59,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:00:59,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614095909] [2020-10-12 21:00:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:00:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:00:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:00:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 21:01:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:01:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3151 [2020-10-12 21:01:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:01:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:01:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 21:01:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 21:01:03,240 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:03,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:03,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:03,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:01:03,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:01:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:01:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:03,276 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 21:01:03,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614095909] [2020-10-12 21:01:03,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:03,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:01:03,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554249082] [2020-10-12 21:01:03,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:01:03,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:03,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:01:03,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:01:03,281 INFO L87 Difference]: Start difference. First operand 510 states and 787 transitions. Second operand 7 states. [2020-10-12 21:01:03,442 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:04,342 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:04,501 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:05,978 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:06,149 INFO L93 Difference]: Finished difference Result 1514 states and 2327 transitions. [2020-10-12 21:01:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:01:06,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-12 21:01:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:06,158 INFO L225 Difference]: With dead ends: 1514 [2020-10-12 21:01:06,159 INFO L226 Difference]: Without dead ends: 1024 [2020-10-12 21:01:06,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:01:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-12 21:01:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 878. [2020-10-12 21:01:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-10-12 21:01:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1369 transitions. [2020-10-12 21:01:06,250 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1369 transitions. Word has length 52 [2020-10-12 21:01:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:06,251 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1369 transitions. [2020-10-12 21:01:06,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:01:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1369 transitions. [2020-10-12 21:01:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 21:01:06,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:06,254 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] [2020-10-12 21:01:06,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:01:06,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:06,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1701590938, now seen corresponding path program 1 times [2020-10-12 21:01:06,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:06,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429639588] [2020-10-12 21:01:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 21:01:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:01:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:01:11,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:01:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:01:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 21:01:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:11,534 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:11,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:01:11,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:01:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:01:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:11,575 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 21:01:11,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429639588] [2020-10-12 21:01:11,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:11,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:01:11,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247280939] [2020-10-12 21:01:11,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:01:11,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:11,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:01:11,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:01:11,578 INFO L87 Difference]: Start difference. First operand 878 states and 1369 transitions. Second operand 7 states. [2020-10-12 21:01:11,717 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:12,471 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:12,669 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 21:01:14,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:14,106 INFO L93 Difference]: Finished difference Result 1873 states and 2896 transitions. [2020-10-12 21:01:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:01:14,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-12 21:01:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:14,126 INFO L225 Difference]: With dead ends: 1873 [2020-10-12 21:01:14,126 INFO L226 Difference]: Without dead ends: 1015 [2020-10-12 21:01:14,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:01:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-12 21:01:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 872. [2020-10-12 21:01:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-12 21:01:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1355 transitions. [2020-10-12 21:01:14,211 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1355 transitions. Word has length 53 [2020-10-12 21:01:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:14,211 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 1355 transitions. [2020-10-12 21:01:14,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:01:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1355 transitions. [2020-10-12 21:01:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 21:01:14,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:14,215 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] [2020-10-12 21:01:14,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:01:14,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash -368602883, now seen corresponding path program 1 times [2020-10-12 21:01:14,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:14,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467971334] [2020-10-12 21:01:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:14,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:19,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 21:01:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 21:01:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 21:01:19,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 21:01:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 21:01:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:19,424 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:19,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:19,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:19,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:19,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:01:19,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:19,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:19,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:19,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:19,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 21:01:19,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 21:01:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 21:01:19,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467971334] [2020-10-12 21:01:19,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:19,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 21:01:19,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666618011] [2020-10-12 21:01:19,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:01:19,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:19,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:01:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:19,571 INFO L87 Difference]: Start difference. First operand 872 states and 1355 transitions. Second operand 6 states. [2020-10-12 21:01:19,718 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:21,542 INFO L93 Difference]: Finished difference Result 2762 states and 4457 transitions. [2020-10-12 21:01:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:01:21,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-12 21:01:21,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:21,570 INFO L225 Difference]: With dead ends: 2762 [2020-10-12 21:01:21,571 INFO L226 Difference]: Without dead ends: 1910 [2020-10-12 21:01:21,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 21:01:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2020-10-12 21:01:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1682. [2020-10-12 21:01:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-10-12 21:01:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2625 transitions. [2020-10-12 21:01:21,779 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2625 transitions. Word has length 61 [2020-10-12 21:01:21,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:21,780 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 2625 transitions. [2020-10-12 21:01:21,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:01:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2625 transitions. [2020-10-12 21:01:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 21:01:21,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:21,785 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] [2020-10-12 21:01:21,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:01:21,785 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash 266961028, now seen corresponding path program 1 times [2020-10-12 21:01:21,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:21,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136258886] [2020-10-12 21:01:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:21,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:23,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:25,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 21:01:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:01:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3551 [2020-10-12 21:01:25,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 21:01:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:25,633 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:25,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:25,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:01:25,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:25,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:25,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:25,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:25,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:25,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 21:01:25,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:25,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:25,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:25,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:01:25,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:25,779 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 21:01:25,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136258886] [2020-10-12 21:01:25,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:25,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:01:25,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975663368] [2020-10-12 21:01:25,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:01:25,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:01:25,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:01:25,781 INFO L87 Difference]: Start difference. First operand 1682 states and 2625 transitions. Second operand 6 states. [2020-10-12 21:01:25,933 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:27,771 INFO L93 Difference]: Finished difference Result 3468 states and 5496 transitions. [2020-10-12 21:01:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 21:01:27,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-12 21:01:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:27,794 INFO L225 Difference]: With dead ends: 3468 [2020-10-12 21:01:27,794 INFO L226 Difference]: Without dead ends: 1806 [2020-10-12 21:01:27,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:01:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-10-12 21:01:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1706. [2020-10-12 21:01:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-10-12 21:01:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2625 transitions. [2020-10-12 21:01:27,947 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2625 transitions. Word has length 76 [2020-10-12 21:01:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:27,947 INFO L479 AbstractCegarLoop]: Abstraction has 1706 states and 2625 transitions. [2020-10-12 21:01:27,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:01:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2625 transitions. [2020-10-12 21:01:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 21:01:27,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:27,951 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] [2020-10-12 21:01:27,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 21:01:27,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:27,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1167243967, now seen corresponding path program 1 times [2020-10-12 21:01:27,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:27,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625629883] [2020-10-12 21:01:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 21:01:28,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:01:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-12 21:01:28,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:01:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:01:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 21:01:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:28,915 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:28,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:28,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:28,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:01:28,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:28,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:29,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:29,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:29,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:29,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 21:01:29,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:29,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:29,075 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 21:01:29,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625629883] [2020-10-12 21:01:29,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:29,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 21:01:29,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675334830] [2020-10-12 21:01:29,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:29,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:29,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:29,078 INFO L87 Difference]: Start difference. First operand 1706 states and 2625 transitions. Second operand 10 states. [2020-10-12 21:01:29,246 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:29,600 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:29,850 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:30,338 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:30,515 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:31,678 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:31,922 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 21:01:32,481 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:01:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:33,608 INFO L93 Difference]: Finished difference Result 3905 states and 6189 transitions. [2020-10-12 21:01:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 21:01:33,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-12 21:01:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:33,623 INFO L225 Difference]: With dead ends: 3905 [2020-10-12 21:01:33,623 INFO L226 Difference]: Without dead ends: 2219 [2020-10-12 21:01:33,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-12 21:01:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-10-12 21:01:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1961. [2020-10-12 21:01:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-10-12 21:01:33,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 3069 transitions. [2020-10-12 21:01:33,789 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 3069 transitions. Word has length 77 [2020-10-12 21:01:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:33,790 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 3069 transitions. [2020-10-12 21:01:33,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 3069 transitions. [2020-10-12 21:01:33,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 21:01:33,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:33,794 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] [2020-10-12 21:01:33,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 21:01:33,794 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:33,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2133723772, now seen corresponding path program 1 times [2020-10-12 21:01:33,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:33,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487426199] [2020-10-12 21:01:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:33,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:34,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:34,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 21:01:34,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:01:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-12 21:01:34,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:01:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:01:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 21:01:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:34,507 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:34,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:34,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:34,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:34,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:01:34,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:34,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:34,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:34,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:01:34,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 21:01:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:34,669 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 21:01:34,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487426199] [2020-10-12 21:01:34,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:34,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 21:01:34,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109039082] [2020-10-12 21:01:34,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 21:01:34,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 21:01:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:01:34,671 INFO L87 Difference]: Start difference. First operand 1961 states and 3069 transitions. Second operand 10 states. [2020-10-12 21:01:34,844 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:35,221 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 21:01:35,477 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 21:01:36,087 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:36,277 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 21:01:37,386 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:37,612 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 21:01:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:39,144 INFO L93 Difference]: Finished difference Result 3470 states and 5464 transitions. [2020-10-12 21:01:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 21:01:39,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-12 21:01:39,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:39,159 INFO L225 Difference]: With dead ends: 3470 [2020-10-12 21:01:39,159 INFO L226 Difference]: Without dead ends: 2210 [2020-10-12 21:01:39,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-12 21:01:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2020-10-12 21:01:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1955. [2020-10-12 21:01:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1955 states. [2020-10-12 21:01:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3055 transitions. [2020-10-12 21:01:39,334 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3055 transitions. Word has length 78 [2020-10-12 21:01:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:39,336 INFO L479 AbstractCegarLoop]: Abstraction has 1955 states and 3055 transitions. [2020-10-12 21:01:39,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 21:01:39,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3055 transitions. [2020-10-12 21:01:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 21:01:39,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:39,343 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] [2020-10-12 21:01:39,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 21:01:39,344 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:39,345 INFO L82 PathProgramCache]: Analyzing trace with hash -506360666, now seen corresponding path program 1 times [2020-10-12 21:01:39,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:39,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406270359] [2020-10-12 21:01:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:39,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 21:01:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:44,570 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:44,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:44,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:44,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:01:44,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:01:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:44,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:44,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 21:01:44,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:01:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:01:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 21:01:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:01:44,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:01:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 21:01:44,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:01:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:01:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:01:44,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406270359] [2020-10-12 21:01:44,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:01:44,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 21:01:44,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052792048] [2020-10-12 21:01:44,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 21:01:44,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:44,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 21:01:44,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:01:44,922 INFO L87 Difference]: Start difference. First operand 1955 states and 3055 transitions. Second operand 8 states. [2020-10-12 21:01:45,143 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:46,101 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:01:50,024 INFO L93 Difference]: Finished difference Result 6123 states and 10237 transitions. [2020-10-12 21:01:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 21:01:50,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-12 21:01:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:01:50,062 INFO L225 Difference]: With dead ends: 6123 [2020-10-12 21:01:50,063 INFO L226 Difference]: Without dead ends: 4185 [2020-10-12 21:01:50,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:01:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2020-10-12 21:01:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3875. [2020-10-12 21:01:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3875 states. [2020-10-12 21:01:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 6309 transitions. [2020-10-12 21:01:50,445 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 6309 transitions. Word has length 83 [2020-10-12 21:01:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:01:50,445 INFO L479 AbstractCegarLoop]: Abstraction has 3875 states and 6309 transitions. [2020-10-12 21:01:50,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 21:01:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 6309 transitions. [2020-10-12 21:01:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 21:01:50,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:01:50,456 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 21:01:50,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 21:01:50,456 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:01:50,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:01:50,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1243655071, now seen corresponding path program 1 times [2020-10-12 21:01:50,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:01:50,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711678271] [2020-10-12 21:01:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:01:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:55,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 21:01:55,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 21:01:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:01:55,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 21:01:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 21:01:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 21:01:55,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:55,656 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:01:55,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:01:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:01:55,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:01:55,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:01:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:01:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:01:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:55,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 21:01:55,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:55,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 21:01:55,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:55,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 21:01:55,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 21:01:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:55,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:55,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:01:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 21:01:55,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:01:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:01:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:01:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:01:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 21:01:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:01:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:01:56,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:01:56,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:01:56,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:01:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 21:01:56,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:01:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:01:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:01:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 21:01:56,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:01:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 21:01:56,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711678271] [2020-10-12 21:01:56,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:01:56,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 21:01:56,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443166516] [2020-10-12 21:01:56,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 21:01:56,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:01:56,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 21:01:56,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:01:56,113 INFO L87 Difference]: Start difference. First operand 3875 states and 6309 transitions. Second operand 12 states. [2020-10-12 21:01:56,585 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:01:57,024 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:01:57,687 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 138 [2020-10-12 21:01:58,984 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 136 [2020-10-12 21:02:00,291 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2020-10-12 21:02:01,370 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-12 21:02:03,590 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:04,740 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:02:05,012 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 21:02:05,831 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:06,010 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 21:02:06,493 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:02:06,818 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 21:02:08,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:08,688 INFO L93 Difference]: Finished difference Result 11542 states and 20771 transitions. [2020-10-12 21:02:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-12 21:02:08,689 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-12 21:02:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:08,777 INFO L225 Difference]: With dead ends: 11542 [2020-10-12 21:02:08,778 INFO L226 Difference]: Without dead ends: 9346 [2020-10-12 21:02:08,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=404, Invalid=2046, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 21:02:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2020-10-12 21:02:09,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 8084. [2020-10-12 21:02:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8084 states. [2020-10-12 21:02:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8084 states to 8084 states and 14202 transitions. [2020-10-12 21:02:09,469 INFO L78 Accepts]: Start accepts. Automaton has 8084 states and 14202 transitions. Word has length 103 [2020-10-12 21:02:09,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:09,469 INFO L479 AbstractCegarLoop]: Abstraction has 8084 states and 14202 transitions. [2020-10-12 21:02:09,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 21:02:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 8084 states and 14202 transitions. [2020-10-12 21:02:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 21:02:09,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:09,480 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:02:09,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 21:02:09,480 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1151152939, now seen corresponding path program 1 times [2020-10-12 21:02:09,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:09,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841798390] [2020-10-12 21:02:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:09,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 21:02:14,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 21:02:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:02:14,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:02:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:02:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:02:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,653 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:02:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:14,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:02:14,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:02:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 21:02:14,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 21:02:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 21:02:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:14,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:14,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:14,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:14,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:14,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:02:14,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:14,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:02:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 21:02:14,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841798390] [2020-10-12 21:02:14,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:14,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 21:02:14,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510016279] [2020-10-12 21:02:14,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:02:14,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:14,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:02:14,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:02:14,806 INFO L87 Difference]: Start difference. First operand 8084 states and 14202 transitions. Second operand 7 states. [2020-10-12 21:02:14,953 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:15,919 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:21,009 INFO L93 Difference]: Finished difference Result 29884 states and 64389 transitions. [2020-10-12 21:02:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 21:02:21,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-12 21:02:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:21,259 INFO L225 Difference]: With dead ends: 29884 [2020-10-12 21:02:21,259 INFO L226 Difference]: Without dead ends: 22328 [2020-10-12 21:02:21,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:02:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22328 states. [2020-10-12 21:02:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22328 to 19528. [2020-10-12 21:02:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19528 states. [2020-10-12 21:02:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19528 states to 19528 states and 39881 transitions. [2020-10-12 21:02:24,566 INFO L78 Accepts]: Start accepts. Automaton has 19528 states and 39881 transitions. Word has length 88 [2020-10-12 21:02:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:24,566 INFO L479 AbstractCegarLoop]: Abstraction has 19528 states and 39881 transitions. [2020-10-12 21:02:24,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:02:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 19528 states and 39881 transitions. [2020-10-12 21:02:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 21:02:24,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:24,578 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:02:24,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 21:02:24,579 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1133602798, now seen corresponding path program 1 times [2020-10-12 21:02:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:24,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029601737] [2020-10-12 21:02:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:29,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:29,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 21:02:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:02:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 21:02:29,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:02:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:02:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:02:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:29,764 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:02:29,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:29,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:29,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:29,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:02:29,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:29,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 21:02:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:02:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:02:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:02:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 21:02:29,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029601737] [2020-10-12 21:02:29,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:02:29,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 21:02:29,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132010452] [2020-10-12 21:02:29,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:02:29,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:29,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:02:29,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:02:29,902 INFO L87 Difference]: Start difference. First operand 19528 states and 39881 transitions. Second operand 7 states. [2020-10-12 21:02:30,051 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:02:31,388 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:37,818 INFO L93 Difference]: Finished difference Result 50201 states and 115545 transitions. [2020-10-12 21:02:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 21:02:37,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-12 21:02:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:38,094 INFO L225 Difference]: With dead ends: 50201 [2020-10-12 21:02:38,094 INFO L226 Difference]: Without dead ends: 31198 [2020-10-12 21:02:38,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-12 21:02:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31198 states. [2020-10-12 21:02:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31198 to 23732. [2020-10-12 21:02:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23732 states. [2020-10-12 21:02:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23732 states to 23732 states and 51293 transitions. [2020-10-12 21:02:43,413 INFO L78 Accepts]: Start accepts. Automaton has 23732 states and 51293 transitions. Word has length 91 [2020-10-12 21:02:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:43,414 INFO L479 AbstractCegarLoop]: Abstraction has 23732 states and 51293 transitions. [2020-10-12 21:02:43,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:02:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 23732 states and 51293 transitions. [2020-10-12 21:02:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 21:02:43,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:43,426 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:02:43,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 21:02:43,426 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:43,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:43,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1575865137, now seen corresponding path program 1 times [2020-10-12 21:02:43,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:43,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119215216] [2020-10-12 21:02:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:45,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:48,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 21:02:48,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 21:02:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 21:02:48,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:02:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:02:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 21:02:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:48,683 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:02:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:02:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:48,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:02:48,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:48,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:02:48,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:02:48,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:48,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:02:48,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:02:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:48,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:02:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:02:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:02:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:02:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:02:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:02:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:48,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:02:48,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 21:02:48,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:02:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 21:02:48,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:02:48,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:02:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 21:02:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:02:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:02:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:02:48,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119215216] [2020-10-12 21:02:48,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:02:48,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 21:02:48,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942730390] [2020-10-12 21:02:48,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:02:48,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:02:48,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:02:48,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:02:48,844 INFO L87 Difference]: Start difference. First operand 23732 states and 51293 transitions. Second operand 7 states. [2020-10-12 21:02:48,990 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:49,144 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 21:02:49,560 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:02:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:02:53,836 INFO L93 Difference]: Finished difference Result 51389 states and 126709 transitions. [2020-10-12 21:02:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:02:53,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-12 21:02:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:02:54,059 INFO L225 Difference]: With dead ends: 51389 [2020-10-12 21:02:54,059 INFO L226 Difference]: Without dead ends: 27737 [2020-10-12 21:02:54,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:02:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27737 states. [2020-10-12 21:02:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27737 to 27361. [2020-10-12 21:02:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27361 states. [2020-10-12 21:02:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27361 states to 27361 states and 59538 transitions. [2020-10-12 21:02:59,726 INFO L78 Accepts]: Start accepts. Automaton has 27361 states and 59538 transitions. Word has length 103 [2020-10-12 21:02:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:02:59,727 INFO L479 AbstractCegarLoop]: Abstraction has 27361 states and 59538 transitions. [2020-10-12 21:02:59,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 21:02:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 27361 states and 59538 transitions. [2020-10-12 21:02:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 21:02:59,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:02:59,762 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:02:59,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 21:02:59,762 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:02:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:02:59,762 INFO L82 PathProgramCache]: Analyzing trace with hash 365071975, now seen corresponding path program 1 times [2020-10-12 21:02:59,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:02:59,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38332562] [2020-10-12 21:02:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:02:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:02:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:02:59,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:04,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:04,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 21:03:04,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 21:03:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 21:03:04,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:03:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:03:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 21:03:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:04,976 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:03:04,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:03:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:03:04,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:03:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:03:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:03:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:03:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:03:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:03:05,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:03:05,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:05,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:03:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:05,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:05,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:05,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 21:03:05,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:03:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 21:03:05,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:05,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:03:05,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:03:05,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:03:05,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 21:03:05,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38332562] [2020-10-12 21:03:05,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:03:05,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:03:05,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423250254] [2020-10-12 21:03:05,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:03:05,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:03:05,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:03:05,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:03:05,119 INFO L87 Difference]: Start difference. First operand 27361 states and 59538 transitions. Second operand 6 states. [2020-10-12 21:03:05,266 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:03:06,336 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:03:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:03:13,913 INFO L93 Difference]: Finished difference Result 72140 states and 198920 transitions. [2020-10-12 21:03:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:03:13,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-12 21:03:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:03:14,321 INFO L225 Difference]: With dead ends: 72140 [2020-10-12 21:03:14,321 INFO L226 Difference]: Without dead ends: 45463 [2020-10-12 21:03:15,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:03:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45463 states. [2020-10-12 21:03:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45463 to 44186. [2020-10-12 21:03:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44186 states. [2020-10-12 21:03:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44186 states to 44186 states and 101749 transitions. [2020-10-12 21:03:23,416 INFO L78 Accepts]: Start accepts. Automaton has 44186 states and 101749 transitions. Word has length 104 [2020-10-12 21:03:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:03:23,416 INFO L479 AbstractCegarLoop]: Abstraction has 44186 states and 101749 transitions. [2020-10-12 21:03:23,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:03:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 44186 states and 101749 transitions. [2020-10-12 21:03:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 21:03:23,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:03:23,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 21:03:23,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 21:03:23,426 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:03:23,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:03:23,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1431553497, now seen corresponding path program 1 times [2020-10-12 21:03:23,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:03:23,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052628153] [2020-10-12 21:03:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:03:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:23,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 21:03:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 21:03:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 21:03:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:03:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 21:03:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 21:03:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:28,621 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 21:03:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:03:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:28,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:03:28,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:03:28,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:03:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:03:28,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:03:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:28,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 21:03:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:28,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:28,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 21:03:28,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:03:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 21:03:28,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:03:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:03:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:03:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:28,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 21:03:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:03:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:03:28,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:03:28,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 21:03:28,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:03:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:03:28,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:03:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:03:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 21:03:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 21:03:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:03:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 21:03:28,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052628153] [2020-10-12 21:03:28,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:03:28,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 21:03:28,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997273628] [2020-10-12 21:03:28,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 21:03:28,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:03:28,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 21:03:28,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:03:28,784 INFO L87 Difference]: Start difference. First operand 44186 states and 101749 transitions. Second operand 7 states. [2020-10-12 21:03:28,995 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 21:03:29,202 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 21:03:29,695 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 21:03:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:03:47,606 INFO L93 Difference]: Finished difference Result 184517 states and 619022 transitions. [2020-10-12 21:03:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 21:03:47,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-12 21:03:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:03:56,807 INFO L225 Difference]: With dead ends: 184517 [2020-10-12 21:03:56,807 INFO L226 Difference]: Without dead ends: 140349 [2020-10-12 21:03:58,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:03:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140349 states.